I have been trying to calculate JNDs from an ROI on two different Cone Catch Images (same animal at different time points to quantify color difference between the images). When I use the “M” command to measure values in each selection, I find that the results table lacks labels and then when I run the “Colour JND Difference Calculator” under the “Data Analysis” section, I get an error message. When I have the ROIs in both images and use the “R” command to measure values in both simultaneously, the results table has labels. In this case, however, when I run the “Colour JND Difference Calculator” for the two regions between the images, the Comparison Results window that comes up gives an “NaN” value under “JND_diff”. I can’t seem to figure out why this is happening though or to get the “Colour JND Difference Calculator” to work. Any insights?
Try rolling back your ImageJ version to 1.5
Go help>update> and select v1.5
Do let me know if this works, ImageJ has changed the way results tables work between releases and that could mess with this script.
I’m experiencing the same problem. Did you manage to find a solution for this?