#grayscale#luminance#BT.709
Grayscale Conversion: Average, BT.601, BT.709, and Luminance Explained
A technical deep-dive into every grayscale conversion method — simple average, BT.601 luma, BT.709 luminance, HSL lightness, and channel extraction — with formulas, JavaScript and Python code, and guidance on when to use each.
Aug 17, 202613 min read