I'm using a demo on Colab notebook called Deep Exemplar Based Video Colorization. https://colab.research.google.com/drive/1Y1XTlTdUG-2LzrH1Vnr_osg9BQavfYsz?usp=sharing After the program stopped functioning, I downgraded python to python 3.7 at top of notebook. The demo worked without issue again for several months. Until today. In the colorization module ( last module) I get the following error: error when colorizing the video ref.jpg module 'cv2.ximgproc' has no attribute 'createFastGlobalSmootherFilter' The 'createFastGlobalSmootherFilter' is a function that the code is attempting to use from the ximgproc module. However, this function does not suddenly appear now to be available in the version of OpenCV I'm a bit vague about Colab codes. No idea how to correct this. Any suggestions? Continue reading...