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Topic: co-seismic displacement

Good morning,
I am working on the co-seismic phase of an earthquake in Taiwan. I have 2 panchromatic SPOT 2 level 1A images.
I followed the 'User’s Guide to COSI-CORR'.
Creation hill shade DEM to select tie point, create GCPS and ortho-rectified my master image. Then Tie points, GCPS and optimization between master ortho-rectified and raw slave. Ortho-rectification of the slave and finally correlation between the two images.
The result I am getting is correct (Can I add image to the post?).
Could you tell me if they are some corrections, filtering to add to my processing to improve the result?
Also How can I extract a color scale showing the displacement?

Thank you
Marine