We assume that the chroma and the hue of any color can be defined as a blend of the three chrominance
elemental sensations: R-G (from red to green), G-B (from green to blue) and B-R (from blue to red).
Due to the limited sensitivity of the visual system to chrominance
information, only rough approximation is required without a significant reduction in image quality.
First, the original and distorted images, which are represented in a device-dependent space, are converted into a device-independent representation consisting of one luminance and two chrominance
color components for each image, known as the YCbCr color space.
Based on determining the smoke edge regions whose wavelet subband energies decrease with time, these regions are then analyzed along with their corresponding background regions with respect to their RGB and chrominance
values to achieve real-time detection of smoke .
Comparative Performance of Different Skin Chrominance
Spaces for the Automatic Detection of Human Faces in Color Images".
3DY/C separator that accurately separates the luminance and chrominance
in NTSC signals to reduce dot-crawl and cross-color artifacts and enable high-quality video capturing
Each 8 X 8 block (or subblock) is transformed into 64 discrete cosine transforms coefficients that approximate the luminance (brightness, darkness, and contrast) and chrominance
(color) of that portion of the image.
Model 617 offers improved chrominance
, advanced filtering and low noise.
The separation of luminance and chrominance
data in S-video signals provides enhanced video quality.
The color features used in this approach are hue and chrominance
In video compression schemes, it is common practice to update the luminance at twice the chrominance
These blocks are then inverse quantized, transformed back to the spatial domain (IDCTDec), and then used to reconstruct luminance and chrominance