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Vertical stripes not working on 5D3 clips sometimes

Open ilia3101 opened this issue 4 years ago • 6 comments

Stripes showing up in underexposed clips mostly... sample attached.

SHORT.MLV.zip

ilia3101 avatar Feb 12 '20 13:02 ilia3101

Hm... in the sky it works perfectly (see at sharpen = 100), but the darks are bad.

masc4ii avatar Feb 12 '20 19:02 masc4ii

Maybe it is some different kind of stripes. I will investigate more.

ilia3101 avatar Feb 12 '20 23:02 ilia3101

I compared and found that, this shadow stripe issue only happens in crop_rec 12 bit.

I'll post comparison later

ilia3101 avatar Feb 13 '20 14:02 ilia3101

I think this happens in conpressed 12/10 bit because stripe algorithm is searching for stripes in highlight range of 14 bit, as compressed 12/10 bit is in a 14 bit container. The way to fix this would be to have stripe algorithm take white level of footage in to consideration I think.

ilia3101 avatar Mar 15 '20 21:03 ilia3101

It is taken in consideration, but it seems that's not enough.

static void detect_vertical_stripes_coeffs(stripes_correction * correction, uint16_t * image_data, int32_t black_level, int32_t white_level, int32_t raw_info_frame_size, uint16_t width, uint16_t height)

bouncyball-git avatar Mar 16 '20 07:03 bouncyball-git

Veery strange :/

ilia3101 avatar Apr 29 '20 15:04 ilia3101