Vertical distortion of an image to a datum (=seismic horizon flattening of an image)

[denzjos]

If one could import the different values, that can be calculated from of the curved lines on the image to a horizontal line (maybe by using a path), into the 'Filter / Distorts / GE Shift' to shift the different rows up and down, it would be possible to do the job. Now the filter generate different values in the X- or Y direction to move columns or rows, so if one can replace the generated values (reading out one by one out of the calculated values in memory / file) this can work. Just a suggestion.