The YIQ model was designed to separate chrominance
from luminance, a requirement in the early days of colour television.
changes in a real scene are accompanied by a luminance change .
In addition, Fujitsu's proprietary H.264 compression algorithm, which uses the 4:2:2(3) chrominance
format, enables footage of fast-moving sports like soccer to be broadcast without sacrificing quality, ensuring that viewers at home can enjoy realistic and thrilling videos of world-class soccer matches.
Cb and Cr represent the two colour components (Chrominance
The results show that the viewers estimated that the best ratio between quality and compression level is achieved at compression level 8, which corresponds to approximate quality factors of 88,28 for luminance, and 90,19 for chrominance
. At that compression level, the sample image file was % the size of the original, and was not on the borderline where viewer starts noticing reduction in quality.
Waveform monitors are used to see where black levels and white levels are, while vectorscopes work with chrominance
and luminance filters limit dot crawl effects and tearing effects are managed using a dedicated tearing effect signal.
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 .
-- 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