Images comparaison

Brief Description

Estimator between 2 images.

Tags

Statistics

Long Description

This application computes MSE (Mean Squared Error), MAE (Mean Absolute Error) and PSNR(Peak Signal to Noise Ratio) between the channel of two images (reference and measurement). The user has to set the used channel and can specified an ROI.

Parameters

• [group] Reference image properties (-ref):

  • [param] Reference image (-in): Image used as reference in the comparaison

  • [param] Reference image channel (-channel): Used channel for the reference image




• [group] Measured image properties (-meas):

  • [param] Measured image (-in): Image used as measured in the comparaison

  • [param] Measured image channel (-channel): Used channel for the measured image




• [group] Region Of Interest (-roi):

  • [param] Start X (-startx): ROI start x position.

  • [param] Start Y (-starty): ROI start y position.

  • [param] Size X (-sizex): size along x in pixels.

  • [param] Size Y (-sizey): size along y in pixels.




• [param] MSE (-mse): Mean Squared Error value

• [param] MAE (-mae): Mean Absolute Error value

• [param] PSNR (-psnr): Peak Signal to Noise Ratio value

Limitations

None

Authors

OTB-Team

See also

BandMath application, ImageStatistics application

Example of use

• Parameters to set value:

• Reference image: GomaApres.png

• Reference image channel: 1

• Measured image: GomaAvant.png

• Measured image channel: 2

• Start X: 20

• Start Y: 30

• Size X: 150

• Size Y: 200

• Command line to execute:

otbcli_CompareImages -ref.in GomaApres.png -ref.channel 1 -meas.in GomaAvant.png -meas.channel 2 -roi.startx 20 -roi.starty 30 -roi.sizex 150 -roi.sizey 200