What is YIQ color model?

The YIQ color model is a color space used primarily in television broadcasting, especially in the NTSC color television system. It separates image luminance (Y) from chrominance (I and Q), where Y represents brightness, I represents the in-phase component, and Q represents the quadrature component of the color signal. This separation allows for better compatibility with black-and-white television and efficient signal transmission. The YIQ model is particularly effective for human vision, as it aligns well with how we perceive brightness and color.