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View Full Version : Noisy Nose in VHS Capture


xiaNaix
13th February 2023, 22:59
I have a tape circa 1985 that I believe is a 2nd gen transfer from a VHS camcorder. I have been able to clean it up somewhat but there is some weird noise around this individual's nose that I can't seem to get rid of. I'm not sure if it's a field issue, motion blur from the camera moving or what.

The clip is a few seconds of unprocessed Lagarith avi...
https://www.mediafire.com/file/k0r8w9pbellzxih/NOSEY.avi/file

The issue is present before deinterlacing with QTGMC so it may have just been baked into the tape. If anyone has any ideas I'd appreciate it.

Emulgator
14th February 2023, 01:09
Looks like a CCD bleeding fault, triggered by brighter parts, propagating in scan direction.
Here the nose is brightest, pulling brightness from the following contents for a few µs.
Can be mended by a 1-dimensional (x-axis only) convolution filter which got to be made absolute and differential sensitive.

Mounir
19th March 2023, 07:15
Try with Spotless that should get rid off most of it
https://imgsli.com/MTYzMTQ3


AVISource("NOSEY.avi")
assumetff()
###########
assumetff()
ConvertToYV16(interlaced=true)
orig=last
ev=orig.assumetff().separatefields().selecteven()
od=orig.assumetff().separatefields().selectodd()
ev
ue_chroma = UToY(ev)
ve_chroma = VToY(ev)
YToUV(ue_chroma, ve_chroma)
MergeLuma(ev)
ev_filtered=last
od
uo_chroma = UToY(od)
vo_chroma = VToY(od)
YToUV(uo_chroma, vo_chroma)
MergeLuma(od)
od_filtered=last
interleave(ev_filtered,od_filtered).SpotLess()
assumefieldbased().assumetff().weave()
#
qtgmc(Preset="fast",edithreads=3)
SelectEven()