I am just getting started with CPA. I could play around with the example file and I am now trying to use the tool for my own project…
After exporting the database I can explore the images from CPA and the labels appear in the right place (nuclei centroids) when calling “Show cell numbers” but I keep getting this error message after displaying the labels:
An error occurred in the program:
TypeError: unsupported operand type(s) for *: ‘NoneType’ and ‘int’
Traceback (most recent call last):
File “imageviewer.pyc”, line 86, in OnPaint
Then the program eventually crashes when gathering some nuclei from the classifier module. Peeking at the properties file of CPA example data set I saw that some channels are defined which is different to my project where I load 3 images per cycle (3 channels) from single images (8-bit tif) without associating them to channels… might that be the problem? How can I fix it?