Q57,Paper3,J 1 3. If f(x, y) is a digital image, then x, y and amplitude values of f are

(A) Finite

(B) Infinite

(C) Neither finite nor infinite

(D) None of the above

Answer A.

Histogram plots the number of  pixels  for each tonal value.

or histogram is a graph showing the number of pixels in an image at each different intensity value found in that image.if pixel is shown by 2 colors (ibit 0/1) and image  size m. then n pixel will be of amplitude 0 and rest m-n will be of 1.