Python 3 migration of gradientGenerator.py - Error while saving the image array as PNG

[parthranawat]

I am using the Python 2 script [LINK] to create an image atlas with a gradient for volume rendering. I followed this [LINK] to migrate the code to Python 3 and was successful in doing so. But when I try to run the script, there was an error (cannot write mode F as PNG) with saving the image array in PNG format.

[aarbelaiz]

Time has passed since I have made use of these scripts and dependencies have changed since then. I agree that these scripts should transition from PY2 to PY3. The error must be from the scipy package where the misc.toimage function is already deprecated or has changed from the version these scripts are using 0.18.1.