nr-deband.py

import vapoursynth as vs
import sys
sys.path.insert(0, '.')
import mvsfunc as mvf
import havsfunc as haf
import inftools as inf
from nnedi3_resample import nnedi3_resample
core = vs.get_core()

source = \
r'/Users/inflation/Downloads/Media/[BDMV][Violet Evergarden][Vol.1-Vol.4 Fin]/VIOLET_EVERGARDEN_1/BDMV/STREAM/00003.m2ts'

src16 = core.lsmas.LWLibavSource(source)
src16 = mvf.Depth(src16, 16)

# Produce example clip
usm = inf.usm(src16, 20)
src6 = mvf.Depth(usm, 6, dither=1)
src16 = mvf.Depth(src6, 16, dither=1)

# Debanding
nr16 = core.bilateral.Bilateral(src16, sigmaS=1.5, sigmaR=0.015, algorithm=2)
noise = core.std.MakeDiff(src16, nr16)
db = core.f3kdb.Deband(nr16, 8, 256, 128, 128, 0, 0, output_depth=16)
db = core.f3kdb.Deband(db, 16, 128, 96, 96, 0, 0, output_depth=16)
db = mvf.LimitFilter(db, nr16, thr=1, thrc=0.8, elast=2)
db = core.std.MergeDiff(db, noise)

# Dering
edge = haf.HQDeringmod(src16)

# Merge
res = mvf.LimitFilter(db, edge, thr=2, elast=1.5)

# Contra-Sharp
noise = core.std.MakeDiff(src16, res)
blur = core.rgvs.RemoveGrain(res, 11)
diff = core.std.MakeDiff(res, blur)
diff = core.rgvs.Repair(diff, noise, 14)
res = core.std.MergeDiff(res, diff)

src16 = core.text.Text(src16, "Source")
res = core.text.Text(res, "After")

res = core.std.Interleave([src16, db, res])

res = mvf.ToRGB(res)
res.set_output()