Little test-denoising filter comparation

[Serbianboss]

I do little test with 4 denoising filters(Convolution, frfun3, Degrain median and fft3d). Source is VHS, capture in DV avi than encoded to mpeg2 720x576, 25fps, 6000 bitrate with CCE.

1. Original source

http://img19.imageshack.us/img19/8426/aoriginal5kh.jpg (http://imageshack.us)

2.Convolution 3d filter, vhsBQ quality (1, 32, 128, 16, 64, 10, 0).

http://img108.imageshack.us/img108/1546/convnajace7zv.jpg (http://imageshack.us)

2.1 Convolution 3d filter, something between movieLQ and vhsBQ quality (1, 32, 128, 8, 32, 10, 0)

http://img373.imageshack.us/img373/6048/convslabije8ul.jpg (http://imageshack.us)

3. frfun3 filter, frfun3b(S=3,T=3) parametar.

http://img373.imageshack.us/img373/6636/frfun31po.jpg (http://imageshack.us)

4. Degrain median filter, 2x (limitY=5,limitUV=7,mode=0) parametars

http://img152.imageshack.us/img152/9066/median3lh.jpg (http://imageshack.us)

5. FFT3D filter, FFT3DFilter(sigma=3) parametar

http://img373.imageshack.us/img373/1091/zfft3d8fv.jpg (http://imageshack.us)

[rfmmars]

Very hard to see any difference. Use a souce with more noise.

Richard

[Backwoods]

Your source appears to have compression artifacts more than general noise.

[CeeJay.dk]

I agree .. use a source with more detail.

However I tried to spot a difference between the shots shown here and from what I can tell Convolution does a worse job than the other filters.

Try to do another comparision between frfun3, Degrain median and fft3d