EVALUATION METRICS OF COLOUR SPACE OF CAM16 COLOUR APPEARANCE MODEL FOR USE FOR COLOUR MEASUREMENT IN TELEVISION, MULTIMEDIA AND CINEMATOGRAPHIC APPLICATIONS
Authors
O. V. GOFAIZEN
O. S. Popov Odessa national academy of telecommunications
V. V. PYLIAVSKYI
O. S. Popov Odessa national academy of telecommunications
Abstract
The
work
is
devoted
to
evaluation
colour
space
metrics
of
the
CAM
16
colour
perception
model
from
the
point
of
view
of
its
use
for
colour
management
in
television
,
multimedia
and
cinematographic
,
as
well
as
other
similar
video
applications
,
including
for
the
further
progress
of
technologies
,
systems
and
equipment
and
the
use
of
colorimetric
methods
for
further
improvement
methods
for
assessment
and
optimization
colour
fidelity
.
An estimate of the change in scale of the assessment chromaticity and lightness is given for wide limits of variation in the luminance of adaptation of visual perception, the luminance of objects of the transmitted scene and environmental conditions. A quantitative interpretation of possible distortions of colour rendition due to discrepancies between the conditions of luminance adaptation and the conditions of perception of the transmitted scene and the reproduced image, which may occur in the practice of implementing the corresponding applications, is given, and on this basis an assessment is made of the possible effect of adaptive principles of systems building. A comparison is made of the estimate of hue, saturation and lightness correlates in CAM16 model space with correlates of the Munsell model space. Examples of comparison colour quadrature in CAM16 space with Munsell colour positions are given. On this basis, conclusions are drawn about the colour rendition fidelity assessment over a wide range of variations in perceptual conditions. The limitations of using Munsell colour renotation system with reference to changing perceptual conditions are noted, since the influence of perceptual conditions for this system is not defined. Examples of colour characteristics for the SDTV, HDTV, UHDTV, HDR TV systems, multimedia applications and cinema systems for the conditions of variation of transmission and perception parameters are given.
