1. the brightness or luminance component of a color in video and image processing, representing the perceived intensity of light independent of color information
Usage: technical; used in video encoding and digital imaging

Examples

• The video codec separates luma and chroma to compress images more efficiently.
• In YUV color space, luma represents the grayscale information of the image.
• Adjusting the luma channel affects the overall brightness without changing the colors.
• Professional video editors often work with luma and chroma separately for better control.
• The luma component is calculated as a weighted combination of red, green, and blue values.