Question

Which of the following fact is true for a image?

(a) An image is the addition of illumination and reflectance component

(b) An image is the subtraction of illumination component from reflectance component

(c) An image is the subtraction of reflectance component from illumination component

(d) An image is the multiplication of illumination and reflectance component

This question was posed to me in quiz.

Origin of the question is Homomorphic filtering topic in division Intensity Transformations and Spatial Filtering of Digital Image Processing

Answer 1

Correct choice is (d) An image is the multiplication of illumination and reflectance component

To elaborate: An image is expressed as the multiplication of illumination and reflectance component.