Step 6: Compute Luminance, Chrominance
, Hue angle(H) and Color distance metric (AERGB) for cashew kernel image from RGB components using the Equation 10, 11, 12, 13 and 14.
As the human visual system is more sensitive to details in luminance than to details in chrominance
, the chrominance
components can be compressed at high rate.
Using CIELAB allows the three basic characteristics of color -- luminance, chrominance
and hue (LCH) -- to be changed independently of each other.
Unfortunately today's TV sets and most PC screen color renditions will mean a sacrifice of hue, chrominance
, and luminance.
Moreover, the camera features color correction, color saturation, lens shading correction, software reset as well as chrominance
control and maintains the ability to withstand extreme temperatures.
Besides, luminance and chrominance
information of image are represented as Y and CbCr respectively in YCbCr model.
The optic elements retain good clarity, and chrominance
accuracy is commendable.
The main challenge is to optimally preserve and make use of the chrominance
component of the image so that the initial appearance of the image is transferred to the resultant picture as accurately as possible.
The processed L channel is then combined with the chrominance
channels ('a' and 'b') and converted back to RGB color space.
A debayering (or demosaicing) algorithm interprets the color information from an OSC camera to reproduce the luminance and chrominance
of the imaged target.
Luminance and chrominance
components of video are separately filtered by H.
The common sense suggests that human skin appearance in photos is more controlled by the chrominance
coordinates than the luminance one: the luminance could vary in a much larger interval than the chrominance