Question

Image differentiation enhances the edges, discontinuities and deemphasizes the pixels with slow varying gray levels.

(a) True

(b) False

The question was posed to me in an interview for internship.

Query is from Sharpening Spatial Filters topic in section Intensity Transformations and Spatial Filtering of Digital Image Processing

Answer 1

The correct choice is (a) True

Best explanation: Fundamentally, the strength of the response of the derivative operative is proportional to the degree of discontinuity in the image. So, we can state that image differentiation enhances the edges, discontinuities and deemphasizes the pixels with slow varying gray levels.