thumb|300px|The YIQ color space at Y=0.5. Note that the I and Q chroma coordinates are scaled up to 1.0. See the formulae below in the article to get the right bounds. right|thumb|An image along with its Y, I, and Q components
~8 min read
Article
12 sectionsContents
- Image processing
- Formulas
- NTSC 1953 colorimetry
- From RGB to YIQ
- From YIQ to RGB
- FCC NTSC Standard (SMPTE C)
- From RGB to YIQ
- From YIQ to RGB
- From YUV to YIQ and vice versa
- Phase-out
- References
- Further reading
thumb|300px|The YIQ color space at Y=0.5. Note that the I and Q chroma coordinates are scaled up to 1.0. See the formulae below in the article to get the right bounds. right|thumb|An image along with its Y, I, and Q components
YIQ is the color space used by the analog NTSC color TV system. I stands for in-phase, while Q stands for quadrature, referring to the components used in quadrature amplitude modulation. Other TV systems used different color spaces, such as YUV for PAL or YDbDr for SECAM. Later digital standards use the YCbCr color space. These color spaces are all broadly related, and work based on the principle of adding a color component named chrominance, to a black and white image named luma.