This forum is disabled, please visit https://forum.opencv.org
 | 1 | initial version |
take a look at the documentation of calcHist
it says :
Parameters
images Source arrays. They all should have the same depth, CV_8U or CV_32F , and the same size. Each of them can have an arbitrary number of channels.
so your stromalHistogram is not suitable, maybe you could convert it to CV_32F