抄録
This
paper presents an analysis of effectiveness on the luma adaptive quantization for ITU
-
R
Rec
.
BT.2100
Hybrid log
-
Gamma (HLG) transfer characteristics. The luma adaptive quantization was
originally
derived
t
o
comp
ensate
the
observed redistribution of code levels between bright and dark image areas associated with
the
High Dynamic Range (HDR)
transfer characteristics.
In the
analysis
, Standard Dy
na
m
ic Range (SDR) signals
are converted into HLG container
.
The
observe
d
linear relationship between the code levels
associated with the BT.709 and HLG
suggests that
the
luma adaptive
quantization is not necessary
for HLG
and endorses the premediated backward compatibility of HLG to SDR.
