Doom9's Forum - View Single Post - Is my source upscaled? (And a few questions about upscaling)

kgrabs · 3rd September 2017, 10:43

I would make the decision more based on the error level than the resolution. Even above 900p using debi+nnedi3 should have a better sharpening effect than any sharpener and be smoother than with any sane AA filter

If you're seeing aliasing, ringing or halos in the "debic" clip then it's probably not a great idea. But I mean, there are plenty of ways to get around the drawbacks, depending on what they are.

Code:

mask = mt_lutxy(error, "x y - abs").mt_expand()

strong = mask.mt_expand().mt_expand().mt_expand().mt_binarize(10).mt_inflate().removegrain(20,-1) 
mask = mask.mt_lut(strong, " x 5 scalef - 40 * y max") # mask gradually from 5 to 10 instead of just binarizing at 10

sharp.mt_merge(last, mask, u=4, v=4)

Or just mask the lines if you're getting sharpened grain/blocking/ringing:

Code:

credits = mt_lutxy(error, "x y - abs").mt_binarize(10).mt_expand().mt_expand().mt_expand().mt_expand()
lines = mt_edge("prewitt", 4, 24)
mask = credits.mt_logic(lines, "andn").removegrain(20, -1)

mt_merge(sharp, mask)

Anyway, if ResFinder's error numbers are consistently over 0.02, and none of them are really low (usually a few frames have 6 or so zeros after the decimal) then it might be a bit dodgy.

3rd September 2017, 10:43	#7 \| Link
kgrabs Registered User Join Date: Jan 2017 Posts: 28	I would make the decision more based on the error level than the resolution. Even above 900p using debi+nnedi3 should have a better sharpening effect than any sharpener and be smoother than with any sane AA filter If you're seeing aliasing, ringing or halos in the "debic" clip then it's probably not a great idea. But I mean, there are plenty of ways to get around the drawbacks, depending on what they are. Code: mask = mt_lutxy(error, "x y - abs").mt_expand() strong = mask.mt_expand().mt_expand().mt_expand().mt_binarize(10).mt_inflate().removegrain(20,-1) mask = mask.mt_lut(strong, " x 5 scalef - 40 * y max") # mask gradually from 5 to 10 instead of just binarizing at 10 sharp.mt_merge(last, mask, u=4, v=4) Or just mask the lines if you're getting sharpened grain/blocking/ringing: Code: credits = mt_lutxy(error, "x y - abs").mt_binarize(10).mt_expand().mt_expand().mt_expand().mt_expand() lines = mt_edge("prewitt", 4, 24) mask = credits.mt_logic(lines, "andn").removegrain(20, -1) mt_merge(sharp, mask) Anyway, if ResFinder's error numbers are consistently over 0.02, and none of them are really low (usually a few frames have 6 or so zeros after the decimal) then it might be a bit dodgy.