Hi John,

Icy already expose the histogram than you can export to excel by doing a right-click on the histogram :

If you want to compute the histogram only on a sub part of the image then you need to crop your image.

You also have a script called “ROI pixels CSV export” than you can find through the top search bar which allow to export all pixels values contained in a ROI (Region Of Interest) in a CSV file.

Hope that helps.

Best.