nonoitall
29th April 2007, 00:29
I've got an anime I'm trying to make as compressible as possible. For the most part, denoisers (the spatial and temporal ones built into AviSynth work wonders) are doing a good job, making colors solid and getting rid of grain, but there are a few frames here and there that still have pretty obvious defects. For example, large bright spots on some frames and black "garbage" at the bottom of others.
I was hoping a temporal denoiser might get rid of them, since they only tend to last for one frame, but maybe I'm just not tweaking things right. Know of any filters/configurations that might help? Even if the frames can't be repaired, is there a filter that could detect such frames and replace them with a nearby frame that looks similar, or just replace it with the previous frame?
I attached a couple frames that demonstrate the problem I'm having. (You'll never guess what anime I'm encoding. ;)) In the first, that bright spot on Raditz's neck and ear is not supposed to be there, and in the next frame you can clearly see the black crud (don't know what the proper term is for it) on the bottom of the frame that occasionally shows itself immediately before a scene change.
I was hoping a temporal denoiser might get rid of them, since they only tend to last for one frame, but maybe I'm just not tweaking things right. Know of any filters/configurations that might help? Even if the frames can't be repaired, is there a filter that could detect such frames and replace them with a nearby frame that looks similar, or just replace it with the previous frame?
I attached a couple frames that demonstrate the problem I'm having. (You'll never guess what anime I'm encoding. ;)) In the first, that bright spot on Raditz's neck and ear is not supposed to be there, and in the next frame you can clearly see the black crud (don't know what the proper term is for it) on the bottom of the frame that occasionally shows itself immediately before a scene change.