Question

What is the equation used to obtain S component of each RGB pixel in RGB color format?

(a) S=1+3/(R+G+B) [min⁡(R,G,B)].

(b) S=1+3/(R+G+B) [max⁡(R,G,B)].

(c) S=1-3/(R+G+B) [max⁡(R,G,B)].

(d) S=1-3/(R+G+B) [min⁡(R,G,B)].

The question was posed to me by my college director while I was bunking the class.

Question is from Color Models topic in chapter Color Image Processing of Digital Image Processing

Answer 1

Right option is (d) S=1-3/(R+G+B) [min⁡(R,G,B)].

The explanation is: If an image is given in RGB format then the saturation component is obtained by the equation.