Question

If the histogram of same images, with different contrast, are different, then what is the relation between the histogram equalized images?

(a) They look visually very different from one another

(b) They look visually very similar to one another

(c) They look visually different from one another just like the input images

(d) None of the mentioned

I have been asked this question in class test.

I'm obligated to ask this question of Histogram Equalization and Processing topic in section Image Enhancement of Digital Image Processing

Answer 1

Correct option is (b) They look visually very similar to one another

For explanation I would say: This is because the contents of all images is same. The difference is just the contrast.

The histogram equalization increases the contrast and make the gray-level difference of output image visually indistinguishable.