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<!--l. 4555-->
<h4 class="subsectionHead"><span class="titlemark">4.9.3 </span> <a
id="x112-5990004.9.3"></a>Segmentation</h4>
<!--l. 4556--><p class="noindent" >Performs segmentation of an image, and output either a raster or a vector file. In vector mode, large input
datasets are supported.
<h5 class="subsubsectionHead"><a
id="x112-6000004.9.3"></a>Detailed description</h5>
<!--l. 4558--><p class="noindent" >This application allows performing various segmentation algorithms on an multispectral image.Available
segmentation algorithms are two different versions of Mean-Shift segmentation algorithm (one being
multi-threaded), simple pixel based connected components according to a user-defined criterion, and
watershed from the gradient of the intensity (norm of spectral bands vector). The application has two
different modes that affects the nature of its output.<br
class="newline" /><br
class="newline" />In raster mode, the output of the application is a classical image of unique labels identifying the segmented
regions. The labeled output can be passed to the ColorMapping application to render regions with
contrasted colors. Please note that this mode loads the whole input image into memory, and as such can
not handle large images. <br
class="newline" /><br
class="newline" />To segment large data, one can use the vector mode. In this case, the output of the application is a
vector file or database. The input image is split into tiles (whose size can be set using the tilesize
parameter), and each tile is loaded, segmented with the chosen algorithm, vectorized, and written
into the output file or database. This piece-wise behavior ensure that memory will never get
overloaded, and that images of any size can be processed. There are few more options in the vector
mode. The simplify option allows simplifying the geometry (i.e. remove nodes in polygons)
according to a user-defined tolerance. The stitch option allows applying to try to stitch
together polygons corresponding to segmented region that may have been split by the tiling
scheme.
<h5 class="subsubsectionHead"><a
id="x112-6010004.9.3"></a>Parameters</h5>
<!--l. 4560--><p class="noindent" >This section describes in details the parameters available for this application. Table <a
href="#x112-60100150">4.50<!--tex4ht:ref: Segmentation_param_table --></a>, page <a
href="#x112-60100150">516<!--tex4ht:ref: Segmentation_param_table --></a>
presents a summary of these parameters and the parameters keys to be used in command-line and
programming languages. Application key is <span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-">Segmentation</span></span></span>. <div class="table">
<!--l. 4561--><p class="noindent" ><a
id="x112-60100150"></a><hr class="float"><div class="float"
>
<div class="center"
>
<!--l. 4562--><p class="noindent" >
<div class="tabular"> <table id="TBL-50" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-50-1g"><col
id="TBL-50-1"></colgroup><colgroup id="TBL-50-2g"><col
id="TBL-50-2"></colgroup><colgroup id="TBL-50-3g"><col
id="TBL-50-3"></colgroup><tr
class="hline"><td><hr></td><td><hr></td><td><hr></td></tr><tr
style="vertical-align:baseline;" id="TBL-50-1-"><td style="white-space:wrap; text-align:left;" id="TBL-50-1-1"
class="td11"><!--l. 4566--><p class="noindent" ><span
class="ptmr7t-x-x-90">Parameter key</span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-1-2"
class="td11"><span
class="ptmr7t-x-x-90">Parameter type </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-1-3"
class="td11"><!--l. 4566--><p class="noindent" ><span
class="ptmr7t-x-x-90">Parameter description</span> </td>
</tr><tr
class="hline"><td><hr></td><td><hr></td><td><hr></td></tr><tr
style="vertical-align:baseline;" id="TBL-50-2-"><td style="white-space:wrap; text-align:left;" id="TBL-50-2-1"
class="td11"><!--l. 4568--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">in</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-2-2"
class="td11"><span
class="ptmr7t-x-x-90">Input image </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-2-3"
class="td11"><!--l. 4568--><p class="noindent" ><span
class="ptmr7t-x-x-90">Input Image</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-3-"><td style="white-space:wrap; text-align:left;" id="TBL-50-3-1"
class="td11"><!--l. 4569--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">filter</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-3-2"
class="td11"><span
class="ptmr7t-x-x-90">Choices </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-3-3"
class="td11"><!--l. 4569--><p class="noindent" ><span
class="ptmr7t-x-x-90">Segmentation algorithm</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-4-"><td style="white-space:wrap; text-align:left;" id="TBL-50-4-1"
class="td11"><!--l. 4570--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">filter</span><span
class="pcrr7tn-x-x-90"> meanshift</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-4-2"
class="td11"><span
class="ptmri7t-x-x-90">Choice </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-4-3"
class="td11"><!--l. 4570--><p class="noindent" ><span
class="ptmr7t-x-x-90">Mean-Shift</span> </td></tr><tr
style="vertical-align:baseline;" id="TBL-50-5-"><td style="white-space:wrap; text-align:left;" id="TBL-50-5-1"
class="td11"><!--l. 4571--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">filter</span><span
class="pcrr7tn-x-x-90"> edison</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-5-2"
class="td11"><span
class="ptmri7t-x-x-90">Choice </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-5-3"
class="td11"><!--l. 4571--><p class="noindent" ><span
class="ptmr7t-x-x-90">Edison mean-shift</span></td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-6-"><td style="white-space:wrap; text-align:left;" id="TBL-50-6-1"
class="td11"><!--l. 4572--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">filter</span><span
class="pcrr7tn-x-x-90"> cc</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-6-2"
class="td11"><span
class="ptmri7t-x-x-90">Choice </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-6-3"
class="td11"><!--l. 4572--><p class="noindent" ><span
class="ptmr7t-x-x-90">Connected components</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-7-"><td style="white-space:wrap; text-align:left;" id="TBL-50-7-1"
class="td11"><!--l. 4573--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">filter</span><span
class="pcrr7tn-x-x-90"> watershed</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-7-2"
class="td11"><span
class="ptmri7t-x-x-90">Choice </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-7-3"
class="td11"><!--l. 4573--><p class="noindent" ><span
class="ptmr7t-x-x-90">Watershed</span> </td></tr><tr
style="vertical-align:baseline;" id="TBL-50-8-"><td style="white-space:wrap; text-align:left;" id="TBL-50-8-1"
class="td11"><!--l. 4574--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">filter.meanshift.spatialr</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-8-2"
class="td11"><span
class="ptmr7t-x-x-90">Int </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-8-3"
class="td11"><!--l. 4574--><p class="noindent" ><span
class="ptmr7t-x-x-90">Spatial radius</span></td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-9-"><td style="white-space:wrap; text-align:left;" id="TBL-50-9-1"
class="td11"><!--l. 4575--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">filter.meanshift.ranger</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-9-2"
class="td11"><span
class="ptmr7t-x-x-90">Float </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-9-3"
class="td11"><!--l. 4575--><p class="noindent" ><span
class="ptmr7t-x-x-90">Range radius</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-10-"><td style="white-space:wrap; text-align:left;" id="TBL-50-10-1"
class="td11"><!--l. 4576--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">filter.meanshift.thres</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-10-2"
class="td11"><span
class="ptmr7t-x-x-90">Float </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-10-3"
class="td11"><!--l. 4576--><p class="noindent" ><span
class="ptmr7t-x-x-90">Mode convergence threshold</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-11-"><td style="white-space:wrap; text-align:left;" id="TBL-50-11-1"
class="td11"><!--l. 4577--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">filter.meanshift.maxiter</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-11-2"
class="td11"><span
class="ptmr7t-x-x-90">Int </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-11-3"
class="td11"><!--l. 4577--><p class="noindent" ><span
class="ptmr7t-x-x-90">Maximum number of iterations</span> </td></tr><tr
style="vertical-align:baseline;" id="TBL-50-12-"><td style="white-space:wrap; text-align:left;" id="TBL-50-12-1"
class="td11"><!--l. 4578--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">filter.meanshift.minsize</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-12-2"
class="td11"><span
class="ptmr7t-x-x-90">Int </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-12-3"
class="td11"><!--l. 4578--><p class="noindent" ><span
class="ptmr7t-x-x-90">Minimum region size</span></td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-13-"><td style="white-space:wrap; text-align:left;" id="TBL-50-13-1"
class="td11"><!--l. 4579--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">filter.edison.spatialr</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-13-2"
class="td11"><span
class="ptmr7t-x-x-90">Int </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-13-3"
class="td11"><!--l. 4579--><p class="noindent" ><span
class="ptmr7t-x-x-90">Spatial radius</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-14-"><td style="white-space:wrap; text-align:left;" id="TBL-50-14-1"
class="td11"><!--l. 4580--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">filter.edison.ranger</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-14-2"
class="td11"><span
class="ptmr7t-x-x-90">Float </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-14-3"
class="td11"><!--l. 4580--><p class="noindent" ><span
class="ptmr7t-x-x-90">Range radius</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-15-"><td style="white-space:wrap; text-align:left;" id="TBL-50-15-1"
class="td11"><!--l. 4581--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">filter.edison.minsize</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-15-2"
class="td11"><span
class="ptmr7t-x-x-90">Int </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-15-3"
class="td11"><!--l. 4581--><p class="noindent" ><span
class="ptmr7t-x-x-90">Minimum region size</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-16-"><td style="white-space:wrap; text-align:left;" id="TBL-50-16-1"
class="td11"><!--l. 4582--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">filter.edison.scale</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-16-2"
class="td11"><span
class="ptmr7t-x-x-90">Float </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-16-3"
class="td11"><!--l. 4582--><p class="noindent" ><span
class="ptmr7t-x-x-90">Scale factor</span> </td></tr><tr
style="vertical-align:baseline;" id="TBL-50-17-"><td style="white-space:wrap; text-align:left;" id="TBL-50-17-1"
class="td11"><!--l. 4583--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">filter.cc.expr</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-17-2"
class="td11"><span
class="ptmr7t-x-x-90">String </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-17-3"
class="td11"><!--l. 4583--><p class="noindent" ><span
class="ptmr7t-x-x-90">Condition</span></td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-18-"><td style="white-space:wrap; text-align:left;" id="TBL-50-18-1"
class="td11"><!--l. 4584--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">filter.watershed.threshold</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-18-2"
class="td11"><span
class="ptmr7t-x-x-90">Float </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-18-3"
class="td11"><!--l. 4584--><p class="noindent" ><span
class="ptmr7t-x-x-90">Depth Threshold</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-19-"><td style="white-space:wrap; text-align:left;" id="TBL-50-19-1"
class="td11"><!--l. 4585--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">filter.watershed.level</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-19-2"
class="td11"><span
class="ptmr7t-x-x-90">Float </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-19-3"
class="td11"><!--l. 4585--><p class="noindent" ><span
class="ptmr7t-x-x-90">Flood Level</span> </td></tr><tr
style="vertical-align:baseline;" id="TBL-50-20-"><td style="white-space:wrap; text-align:left;" id="TBL-50-20-1"
class="td11"><!--l. 4586--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-20-2"
class="td11"><span
class="ptmr7t-x-x-90">Choices </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-20-3"
class="td11"><!--l. 4586--><p class="noindent" ><span
class="ptmr7t-x-x-90">Processing mode</span></td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-21-"><td style="white-space:wrap; text-align:left;" id="TBL-50-21-1"
class="td11"><!--l. 4587--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode</span><span
class="pcrr7tn-x-x-90"> vector</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-21-2"
class="td11"><span
class="ptmri7t-x-x-90">Choice </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-21-3"
class="td11"><!--l. 4587--><p class="noindent" ><span
class="ptmr7t-x-x-90">Tile-based large-scale segmentation with</span>
<span
class="ptmr7t-x-x-90">vector output</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-22-"><td style="white-space:wrap; text-align:left;" id="TBL-50-22-1"
class="td11"><!--l. 4588--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode</span><span
class="pcrr7tn-x-x-90"> raster</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-22-2"
class="td11"><span
class="ptmri7t-x-x-90">Choice </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-22-3"
class="td11"><!--l. 4588--><p class="noindent" ><span
class="ptmr7t-x-x-90">Standard segmentation with labeled raster</span>
<span
class="ptmr7t-x-x-90">output</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-23-"><td style="white-space:wrap; text-align:left;" id="TBL-50-23-1"
class="td11"><!--l. 4589--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode.vector.out</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-23-2"
class="td11"><span
class="ptmr7t-x-x-90">Output File name</span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-23-3"
class="td11"><!--l. 4589--><p class="noindent" ><span
class="ptmr7t-x-x-90">Output vector file</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-24-"><td style="white-space:wrap; text-align:left;" id="TBL-50-24-1"
class="td11"><!--l. 4590--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode.vector.outmode</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-24-2"
class="td11"><span
class="ptmr7t-x-x-90">Choices </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-24-3"
class="td11"><!--l. 4590--><p class="noindent" ><span
class="ptmr7t-x-x-90">Writing mode for the output vector file</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-25-"><td style="white-space:wrap; text-align:left;" id="TBL-50-25-1"
class="td11"><!--l. 4591--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode.vector.outmode</span><span
class="pcrr7tn-x-x-90"> ulco</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-25-2"
class="td11"><span
class="ptmri7t-x-x-90">Choice </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-25-3"
class="td11"><!--l. 4591--><p class="noindent" ><span
class="ptmr7t-x-x-90">Update output vector file, only allow to</span>
<span
class="ptmr7t-x-x-90">create new layers</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-26-"><td style="white-space:wrap; text-align:left;" id="TBL-50-26-1"
class="td11"><!--l. 4592--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode.vector.outmode</span><span
class="pcrr7tn-x-x-90"> ovw</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-26-2"
class="td11"><span
class="ptmri7t-x-x-90">Choice </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-26-3"
class="td11"><!--l. 4592--><p class="noindent" ><span
class="ptmr7t-x-x-90">Overwrite output vector file if existing.</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-27-"><td style="white-space:wrap; text-align:left;" id="TBL-50-27-1"
class="td11"><!--l. 4593--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode.vector.outmode</span><span
class="pcrr7tn-x-x-90"> ulovw</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-27-2"
class="td11"><span
class="ptmri7t-x-x-90">Choice </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-27-3"
class="td11"><!--l. 4593--><p class="noindent" ><span
class="ptmr7t-x-x-90">Update output vector file, overwrite existing</span>
<span
class="ptmr7t-x-x-90">layer</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-28-"><td style="white-space:wrap; text-align:left;" id="TBL-50-28-1"
class="td11"><!--l. 4594--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode.vector.outmode</span><span
class="pcrr7tn-x-x-90"> ulu</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-28-2"
class="td11"><span
class="ptmri7t-x-x-90">Choice </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-28-3"
class="td11"><!--l. 4594--><p class="noindent" ><span
class="ptmr7t-x-x-90">Update output vector file, update existing</span>
<span
class="ptmr7t-x-x-90">layer</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-29-"><td style="white-space:wrap; text-align:left;" id="TBL-50-29-1"
class="td11"><!--l. 4595--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode.vector.inmask</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-29-2"
class="td11"><span
class="ptmr7t-x-x-90">Input image </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-29-3"
class="td11"><!--l. 4595--><p class="noindent" ><span
class="ptmr7t-x-x-90">Mask Image</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-30-"><td style="white-space:wrap; text-align:left;" id="TBL-50-30-1"
class="td11"><!--l. 4596--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode.vector.neighbor</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-30-2"
class="td11"><span
class="ptmr7t-x-x-90">Boolean </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-30-3"
class="td11"><!--l. 4596--><p class="noindent" ><span
class="ptmr7t-x-x-90">8-neighbor connectivity</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-31-"><td style="white-space:wrap; text-align:left;" id="TBL-50-31-1"
class="td11"><!--l. 4597--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode.vector.stitch</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-31-2"
class="td11"><span
class="ptmr7t-x-x-90">Boolean </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-31-3"
class="td11"><!--l. 4597--><p class="noindent" ><span
class="ptmr7t-x-x-90">Stitch polygons</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-32-"><td style="white-space:wrap; text-align:left;" id="TBL-50-32-1"
class="td11"><!--l. 4598--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode.vector.minsize</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-32-2"
class="td11"><span
class="ptmr7t-x-x-90">Int </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-32-3"
class="td11"><!--l. 4598--><p class="noindent" ><span
class="ptmr7t-x-x-90">Minimum object size</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-33-"><td style="white-space:wrap; text-align:left;" id="TBL-50-33-1"
class="td11"><!--l. 4599--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode.vector.simplify</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-33-2"
class="td11"><span
class="ptmr7t-x-x-90">Float </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-33-3"
class="td11"><!--l. 4599--><p class="noindent" ><span
class="ptmr7t-x-x-90">Simplify polygons</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-34-"><td style="white-space:wrap; text-align:left;" id="TBL-50-34-1"
class="td11"><!--l. 4600--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode.vector.layername</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-34-2"
class="td11"><span
class="ptmr7t-x-x-90">String </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-34-3"
class="td11"><!--l. 4600--><p class="noindent" ><span
class="ptmr7t-x-x-90">Layer name</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-35-"><td style="white-space:wrap; text-align:left;" id="TBL-50-35-1"
class="td11"><!--l. 4601--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode.vector.fieldname</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-35-2"
class="td11"><span
class="ptmr7t-x-x-90">String </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-35-3"
class="td11"><!--l. 4601--><p class="noindent" ><span
class="ptmr7t-x-x-90">Geometry index field name</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-36-"><td style="white-space:wrap; text-align:left;" id="TBL-50-36-1"
class="td11"><!--l. 4602--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode.vector.tilesize</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-36-2"
class="td11"><span
class="ptmr7t-x-x-90">Int </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-36-3"
class="td11"><!--l. 4602--><p class="noindent" ><span
class="ptmr7t-x-x-90">Tiles size</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-37-"><td style="white-space:wrap; text-align:left;" id="TBL-50-37-1"
class="td11"><!--l. 4603--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode.vector.startlabel</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-37-2"
class="td11"><span
class="ptmr7t-x-x-90">Int </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-37-3"
class="td11"><!--l. 4603--><p class="noindent" ><span
class="ptmr7t-x-x-90">Starting geometry index</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-38-"><td style="white-space:wrap; text-align:left;" id="TBL-50-38-1"
class="td11"><!--l. 4604--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode.vector.ogroptions</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-38-2"
class="td11"><span
class="ptmr7t-x-x-90">String list </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-38-3"
class="td11"><!--l. 4604--><p class="noindent" ><span
class="ptmr7t-x-x-90">OGR options for layer creation</span> </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-50-39-"><td style="white-space:wrap; text-align:left;" id="TBL-50-39-1"
class="td11"><!--l. 4605--><p class="noindent" ><span class="obeylines-h"><span class="verb"><span
class="pcrr7tn-x-x-90">mode.raster.out</span></span></span> </td><td style="white-space:nowrap; text-align:left;" id="TBL-50-39-2"
class="td11"><span
class="ptmr7t-x-x-90">Output image </span></td><td style="white-space:wrap; text-align:left;" id="TBL-50-39-3"
class="td11"><!--l. 4605--><p class="noindent" ><span
class="ptmr7t-x-x-90">Output labeled image</span> </td>
</tr><tr
class="hline"><td><hr></td><td><hr></td><td><hr></td></tr><tr
style="vertical-align:baseline;" id="TBL-50-40-"><td style="white-space:wrap; text-align:left;" id="TBL-50-40-1"
class="td11"> </td></tr></table></div>
</div>
<br /> <div class="caption"
><span class="id">Table 4.50: </span><span
class="content">Parameters table for Segmentation.</span></div><!--tex4ht:label?: x112-60100150 -->
</div><hr class="endfloat" />
</div>
<!--l. 4611--><p class="noindent" ><span class="paragraphHead"><a
id="x112-6020004.9.3"></a><span
class="ptmb7t-">Input Image</span></span>
The input image to segment
<!--l. 4613--><p class="noindent" ><span class="paragraphHead"><a
id="x112-6030004.9.3"></a><span
class="ptmb7t-">Segmentation algorithm</span></span>
Choice of segmentation algorithm (mean-shift by default) Available choices are:
<ul class="itemize1">
<li class="itemize"><span
class="ptmb7t-">Mean-Shift</span>: OTB implementation of the Mean-Shift algorithm (multi-threaded).
<ul class="itemize2">
<li class="itemize"><span
class="ptmb7t-">Spatial radius: </span>Spatial radius of the neighborhood.
</li>
<li class="itemize"><span
class="ptmb7t-">Range radius: </span>Range radius defining the radius (expressed in radiometry unit) in the
multispectral space.
</li>
<li class="itemize"><span
class="ptmb7t-">Mode convergence threshold: </span>Algorithm iterative scheme will stop if mean-shift
vector is below this threshold or if iteration number reached maximum number of
iterations.
</li>
<li class="itemize"><span
class="ptmb7t-">Maximum number of iterations: </span>Algorithm iterative scheme will stop if convergence
hasn’t been reached after the maximum number of iterations.
</li>
<li class="itemize"><span
class="ptmb7t-">Minimum region size: </span>Minimum size of a region (in pixel unit) in segmentation.
Smaller clusters will be merged to the neighboring cluster with the closest radiometry.
If set to 0 no pruning is done.</li></ul>
</li>
<li class="itemize"><span
class="ptmb7t-">Edison mean-shift</span>: Edison implementation of mean-shift algorithm, by its authors.
<ul class="itemize2">
<li class="itemize"><span
class="ptmb7t-">Spatial radius: </span>Spatial radius defining neighborhood.
</li>
<li class="itemize"><span
class="ptmb7t-">Range radius: </span>Range radius defining the radius (expressed in radiometry unit) in the
multi-spectral space.
</li>
<li class="itemize"><span
class="ptmb7t-">Minimum region size: </span>Minimum size of a region in segmentation. Smaller clusters will
be merged to the neighboring cluster with the closest radiometry.
</li>
<li class="itemize"><span
class="ptmb7t-">Scale factor: </span>Scaling of the image before processing. This is useful for images with
narrow decimal ranges (like [0,1] for instance).</li></ul>
</li>
<li class="itemize"><span
class="ptmb7t-">Connected components</span>: Simple pixel-based connected-components algorithm with a user-defined
connection condition.
<ul class="itemize2">
<li class="itemize"><span
class="ptmb7t-">Condition: </span>User defined connection condition, written as a mathematical expression.
Available variables are p(i)b(i), intensity_p(i) and distance (example of expression :
distance <span
class="cmmi-10"><</span>10 )</li></ul>
</li>
<li class="itemize"><span
class="ptmb7t-">Watershed</span>: The traditional watershed algorithm. The height function is the gradient magnitude of
the amplitude (square root of the sum of squared bands).
<ul class="itemize2">
<li class="itemize"><span
class="ptmb7t-">Depth Threshold: </span>Depth threshold Units in percentage of the maximum depth in the
image.
</li>
<li class="itemize"><span
class="ptmb7t-">Flood Level: </span>flood level for generating the merge tree from the initial segmentation
(between 0 and 1)</li></ul>
</li></ul>
<!--l. 4642--><p class="noindent" ><span class="paragraphHead"><a
id="x112-6040004.9.3"></a><span
class="ptmb7t-">Processing mode</span></span>
Choice of processing mode, either raster or large-scale. Available choices are:
<ul class="itemize1">
<li class="itemize"><span
class="ptmb7t-">Tile-based large-scale segmentation with vector output</span>: In this mode, the application will output a
vector file or database, and process the input image piecewise. This allows performing segmentation
of very large images.
<ul class="itemize2">
<li class="itemize"><span
class="ptmb7t-">Output vector file: </span>The output vector file or database (name can be anything understood
by OGR)
</li>
<li class="itemize"><span
class="ptmb7t-">Writing mode for the output vector file: </span>This allows setting the writing behaviour for
the output vector file. Please note that the actual behaviour depends on the file format.
</li>
<li class="itemize"><span
class="ptmb7t-">Mask Image: </span>Only pixels whose mask value is strictly positive will be segmented.
</li>
<li class="itemize"><span
class="ptmb7t-">8-neighbor connectivity: </span>Activate 8-Neighborhood connectivity (default is 4).
</li>
<li class="itemize"><span
class="ptmb7t-">Stitch polygons: </span>Scan polygons on each side of tiles and stitch polygons which connect
by more than one pixel.
</li>
<li class="itemize"><span
class="ptmb7t-">Minimum object size: </span>Objects whose size is below the minimum object size (area in
pixels) will be ignored during vectorization.
</li>
<li class="itemize"><span
class="ptmb7t-">Simplify polygons: </span>Simplify polygons according to a given tolerance (in pixel). This
option allows reducing the size of the output file or database.
</li>
<li class="itemize"><span
class="ptmb7t-">Layer name: </span>Name of the layer in the vector file or database (default is Layer).
</li>
<li class="itemize"><span
class="ptmb7t-">Geometry index field name: </span>Name of the field holding the geometry index in the
output vector file or database.
</li>
<li class="itemize"><span
class="ptmb7t-">Tiles size: </span>User defined tiles size for tile-based segmentation. Optimal tile size is
selected according to available RAM if null.
</li>
<li class="itemize"><span
class="ptmb7t-">Starting geometry index: </span>Starting value of the geometry index field
</li>
<li class="itemize"><span
class="ptmb7t-">OGR options for layer creation: </span>A list of layer creation options in the form
KEY=VALUE that will be passed directly to OGR without any validity checking.
Options may depend on the file format, and can be found in OGR documentation.</li></ul>
</li>
<li class="itemize"><span
class="ptmb7t-">Standard segmentation with labeled raster output</span>: In this mode, the application will output a
standard labeled raster. This mode can not handle large data.
<ul class="itemize2">
<li class="itemize"><span
class="ptmb7t-">Output labeled image: </span>The output labeled image.</li></ul>
</li></ul>
<!--l. 4667--><p class="noindent" >
<h5 class="subsubsectionHead"><a
id="x112-6050004.9.3"></a>Examples</h5>
<!--l. 4668--><p class="noindent" ><span class="paragraphHead"><a
id="x112-6060004.9.3"></a><span
class="ptmb7t-">Example 1</span></span>
Example of use with vector mode and watershed segmentationTo run this example in command-line, use the
following: <!--l. 4670-->
<div class="lstlisting" id="listing-102"><span class="label"><a
id="x112-606001r1"></a></span><span
class="pcrr7tn-x-x-70">otbcli_Segmentation</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">-</span><span
class="pcrb7t-x-x-70">in</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">QB_Toulouse_Ortho_PAN</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">tif</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">-</span><span
class="pcrr7tn-x-x-70">mode</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">vector</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">-</span><span
class="pcrr7tn-x-x-70">mode</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">vector</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">out</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">SegmentationVector</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">sqlite</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">-</span><span
class="pcrr7tn-x-x-70">filter</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">watershed</span>
</div>
<!--l. 4673--><p class="noindent" >To run this example from Python, use the following code snippet: <!--l. 4674-->
<div class="lstlisting" id="listing-103"><span class="label"><a
id="x112-606002r1"></a></span><span
class="pcrro7t-x-x-70">#</span><span
class="pcrro7t-x-x-70">!/</span><span
class="pcrro7t-x-x-70">usr</span><span
class="pcrro7t-x-x-70">/</span><span
class="pcrro7t-x-x-70">bin</span><span
class="pcrro7t-x-x-70">/</span><span
class="pcrro7t-x-x-70">python</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-606003r2"></a></span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-606004r3"></a></span><span
class="pcrro7t-x-x-70">#</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">Import</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">the</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">otb</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">applications</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">package</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-606005r4"></a></span><span
class="pcrb7t-x-x-70">import</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">otbApplication</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-606006r5"></a></span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-606007r6"></a></span><span
class="pcrro7t-x-x-70">#</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">The</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">following</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">line</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">creates</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">an</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">instance</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">of</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">the</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">Segmentation</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">application</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-606008r7"></a></span><span
class="pcrr7tn-x-x-70">Segmentation</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">=</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">otbApplication</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">Registry</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">CreateApplication</span><span
class="pcrr7tn-x-x-70">(</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">Segmentation</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">)</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-606009r8"></a></span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-606010r9"></a></span><span
class="pcrro7t-x-x-70">#</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">The</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">following</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">lines</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">set</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">all</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">the</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">application</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">parameters</span><span
class="pcrro7t-x-x-70">:</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-606011r10"></a></span><span
class="pcrr7tn-x-x-70">Segmentation</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">SetParameterString</span><span
class="pcrr7tn-x-x-70">(</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">in</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">,</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">QB_Toulouse_Ortho_PAN</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">tif</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">)</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-606012r11"></a></span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-606013r12"></a></span><span
class="pcrr7tn-x-x-70">Segmentation</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">SetParameterString</span><span
class="pcrr7tn-x-x-70">(</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">mode</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">,</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">vector</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">)</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-606014r13"></a></span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-606015r14"></a></span><span
class="pcrr7tn-x-x-70">Segmentation</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">SetParameterString</span><span
class="pcrr7tn-x-x-70">(</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">mode</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">vector</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">out</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">,</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">SegmentationVector</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">sqlite</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">)</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-606016r15"></a></span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-606017r16"></a></span><span
class="pcrr7tn-x-x-70">Segmentation</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">SetParameterString</span><span
class="pcrr7tn-x-x-70">(</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">filter</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">,</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">watershed</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">)</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-606018r17"></a></span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-606019r18"></a></span><span
class="pcrro7t-x-x-70">#</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">The</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">following</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">line</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">execute</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">the</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">application</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-606020r19"></a></span><span
class="pcrr7tn-x-x-70">Segmentation</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">ExecuteAndWriteOutput</span><span
class="pcrr7tn-x-x-70">()</span>
</div>
<!--l. 4695--><p class="noindent" ><span class="paragraphHead"><a
id="x112-6070004.9.3"></a><span
class="ptmb7t-">Example 2</span></span>
Example of use with raster mode and mean-shift segmentationTo run this example in command-line, use the
following: <!--l. 4697-->
<div class="lstlisting" id="listing-104"><span class="label"><a
id="x112-607001r1"></a></span><span
class="pcrr7tn-x-x-70">otbcli_Segmentation</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">-</span><span
class="pcrb7t-x-x-70">in</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">QB_Toulouse_Ortho_PAN</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">tif</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">-</span><span
class="pcrr7tn-x-x-70">mode</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">raster</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">-</span><span
class="pcrr7tn-x-x-70">mode</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">raster</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">out</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">SegmentationRaster</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">tif</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">uint16</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">-</span><span
class="pcrr7tn-x-x-70">filter</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">meanshift</span>
</div>
<!--l. 4700--><p class="noindent" >To run this example from Python, use the following code snippet: <!--l. 4701-->
<div class="lstlisting" id="listing-105"><span class="label"><a
id="x112-607002r1"></a></span><span
class="pcrro7t-x-x-70">#</span><span
class="pcrro7t-x-x-70">!/</span><span
class="pcrro7t-x-x-70">usr</span><span
class="pcrro7t-x-x-70">/</span><span
class="pcrro7t-x-x-70">bin</span><span
class="pcrro7t-x-x-70">/</span><span
class="pcrro7t-x-x-70">python</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-607003r2"></a></span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-607004r3"></a></span><span
class="pcrro7t-x-x-70">#</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">Import</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">the</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">otb</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">applications</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">package</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-607005r4"></a></span><span
class="pcrb7t-x-x-70">import</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">otbApplication</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-607006r5"></a></span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-607007r6"></a></span><span
class="pcrro7t-x-x-70">#</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">The</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">following</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">line</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">creates</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">an</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">instance</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">of</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">the</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">Segmentation</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">application</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-607008r7"></a></span><span
class="pcrr7tn-x-x-70">Segmentation</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">=</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">otbApplication</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">Registry</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">CreateApplication</span><span
class="pcrr7tn-x-x-70">(</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">Segmentation</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">)</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-607009r8"></a></span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-607010r9"></a></span><span
class="pcrro7t-x-x-70">#</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">The</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">following</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">lines</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">set</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">all</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">the</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">application</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">parameters</span><span
class="pcrro7t-x-x-70">:</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-607011r10"></a></span><span
class="pcrr7tn-x-x-70">Segmentation</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">SetParameterString</span><span
class="pcrr7tn-x-x-70">(</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">in</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">,</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">QB_Toulouse_Ortho_PAN</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">tif</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">)</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-607012r11"></a></span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-607013r12"></a></span><span
class="pcrr7tn-x-x-70">Segmentation</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">SetParameterString</span><span
class="pcrr7tn-x-x-70">(</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">mode</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">,</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">raster</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">)</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-607014r13"></a></span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-607015r14"></a></span><span
class="pcrr7tn-x-x-70">Segmentation</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">SetParameterString</span><span
class="pcrr7tn-x-x-70">(</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">mode</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">raster</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">out</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">,</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">SegmentationRaster</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">tif</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">)</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-607016r15"></a></span><span
class="pcrr7tn-x-x-70">Segmentation</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">SetParameterOutputImagePixelType</span><span
class="pcrr7tn-x-x-70">(</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">mode</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">raster</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">out</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">,</span><span
class="pcrr7tn-x-x-70"> </span><span
class="pcrr7tn-x-x-70">3)</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-607017r16"></a></span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-607018r17"></a></span><span
class="pcrr7tn-x-x-70">Segmentation</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">SetParameterString</span><span
class="pcrr7tn-x-x-70">(</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">filter</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">,</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">meanshift</span><span
class="pcrr7tn-x-x-70">"</span><span
class="pcrr7tn-x-x-70">)</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-607019r18"></a></span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-607020r19"></a></span><span
class="pcrro7t-x-x-70">#</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">The</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">following</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">line</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">execute</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">the</span><span
class="pcrro7t-x-x-70"> </span><span
class="pcrro7t-x-x-70">application</span><span
class="pcrr7tn-x-x-70"> </span><br /><span class="label"><a
id="x112-607021r20"></a></span><span
class="pcrr7tn-x-x-70">Segmentation</span><span
class="pcrr7tn-x-x-70">.</span><span
class="pcrr7tn-x-x-70">ExecuteAndWriteOutput</span><span
class="pcrr7tn-x-x-70">()</span>
</div>
<!--l. 4723--><p class="noindent" >
<h5 class="subsubsectionHead"><a
id="x112-6080004.9.3"></a>Limitations</h5>
<!--l. 4724--><p class="noindent" >In raster mode, the application can not handle large input images. Stitching step of vector mode
might become slow with very large input images. MeanShift filter results depends on threads
number.
<h5 class="subsubsectionHead"><a
id="x112-6090004.9.3"></a>Authors</h5>
<!--l. 4726--><p class="noindent" >This application has been written by OTB-Team.
<h5 class="subsubsectionHead"><a
id="x112-6100004.9.3"></a>See also</h5>
<!--l. 4728--><p class="noindent" >These additional ressources can be useful for further information:
<ul class="itemize1">
<li class="itemize">MeanShiftSegmentation</li></ul>
<!--l. 4732-->
<!--l. 4732--><p class="noindent" ><a
id="tailCookBooksu84.html"></a>
</body></html>