There is a new Deeplearning code to decensor image, it also can remove mosaic from an image, the name is DeepCreamPy. I just tried this code today.
First I install the code and model, then prepare the input image, two people are studying. (Boy’s head is covered by mosaic.)
Using GIMP draw a green rectangle on the mosaic area save as another file.
Then run the code, get result.
I think the result is not too bad but is not good enough either. If we want using some technology to remove mosaic from the video, we may combine multiple frames’ information to reconstruct the information we need, if we only want to remove mosaic from one image, the code may need to have some domain information or using some imagination.