Dogway's Filters Packs

[tormento]

@Dogway

When you have some time, would you please add to your scripts a "modern" version of finedehalo?

It still needs dehalo_alpha.avsi and mt_xxpand_multi.avsi.

Perhaps merging them and updating with latest AVS+ functions could make it a bit faster.

[Lucky38]

Question:

Why below call for 1080p gives 3-3,5k bitrate

SMDegrain(tr=3, thSAD=500, thSCD2 = 100,truemotion=false, rfilter=3, prefilter=1, search=5, contrasharp=false, LFR=true, DCTFlicker=true)

and below call for 2160p gives 15-16k bitrate

SMDegrain(tr=3, thSAD=500, thSCD2 = 100,truemotion=false, prefilter=1, UHDHalf=false, limit=255, search=5, contrasharp=false, LFR=true, DCTFlicker=true)


X265 config has exaclty the same settings. I know that 4k is 4 time 1080p but i have feeling that SMDegrain reduces grain less for 4k than for 1080p.

[DTL]

4K naturally have more noise 'per sample' because it gets 4 times less photons per sample from same lit scene (via same aperture lens) and relative photon shot noise is 2 times larger. It also can cause worse motion estimation and higher SAD and lower denoising.
To shoot comparable 4K users need to set 4 times more light per scene (to keep same depth of field from lens) and use camera with same electrons per sample sensor capacity (or something like 4 times per frame reading and 'external accumulation') and externally it is looks like 4 time less ISO sensitivity rating. In that case the 4K digital footage expected to be only 4 times more in comparison with 1080 in data rate (sort of real scene data rate with zero noise).

[tormento]

Originally Posted by DTL

4K naturally have more noise 'per sample' because it gets 4 times less photons per sample from same lit scene (via same aperture lens) and relative photon shot noise is 2 times larger. It also can cause worse motion estimation and higher SAD and lower denoising.

Are you suggesting that we should denoise a UHD with the BD version or resizing it as prefilter is enough?

[Lucky38]

Originally Posted by DTL

4K naturally have more noise 'per sample' because it gets 4 times less photons per sample from same lit scene (via same aperture lens) and relative photon shot noise is 2 times larger. It also can cause worse motion estimation and higher SAD and lower denoising.
To shoot comparable 4K users need to set 4 times more light per scene (to keep same depth of field from lens) and use camera with same electrons per sample sensor capacity (or something like 4 times per frame reading and 'external accumulation') and externally it is looks like 4 time less ISO sensitivity rating. In that case the 4K digital footage expected to be only 4 times more in comparison with 1080 in data rate (sort of real scene data rate with zero noise).

so is there any suggestion how to properly handle UHD noise?

[DTL]

Because it typically have more relative noise levels - increase 'denoising' settings like thSAD and tr and also may be double block size (it also may be useful for typically more soft UHD sources but may depend on source sharpness).