Question

What is the advantage of piece-wise enhancement technique?
(a.) Is applied when there is high contrast in grey levels
(b.) Different enhancement techniques can be applied for different parts of the image
(c.) Divides the image into pieces and applies an enhancement technique
(d.) Is applied for highly heterogeneous land use

Answer 1

Answer:c

Explanation:

This presents an image enhancement technique that does uses piecewise linear transforms. The determination of this transform has to be done using a new method for the average dynamic range. Firstly the procedure is defined for monochrome images and secondly that extends for the color ones.

Piecewise linear contrast stretch is on the basis of unsharp method of masking algorithm which is employed for the image enhancement. The proposed method is designed such as it minimizes contrast problem.