Question

For Image Enhancement a general-approach is to use a function of values of f (input image) in a predefined neighborhood of (x, y) to determine the value of g (output image) at (x, y). The techniques that uses such approaches are called ________

(a) Contouring

(b) Contrast stretching

(c) Mask processing

(d) None of the mentioned

This question was addressed to me in an online quiz.

My question is based upon Relationship between Pixels and Image Enhancement Basics topic in section Image Enhancement of Digital Image Processing

Answer 1

Correct choice is (c) Mask processing

For explanation: The above mentioned approach is based on the use of masks. A mask is a small m*n 2-D array in which the values of mask coefficients determine the nature of the process and Image Enhancement on such is called Mask Processing or Filtering.