How to improve the linear grey level transformation?

1. Which of the following is improved by applying gray level enhancement technique?
2. Which gray level transformation increases the dynamic range of gray level?
3. What is the technique for gray level transformation function called?
4. What are the gray level transformation methods used in image enhancement?

Which of the following is improved by applying gray level enhancement technique?

It makes an image more noticeable by enhancing the features such as edges, boundaries, or contrast.

Which gray level transformation increases the dynamic range of gray level?

Contrast Stretching:

It increases the dynamic range of grey levels in the image.

What is the technique for gray level transformation function called?

DIP - Histogram Equalization. DIP - Gray Level Transformations.

What are the gray level transformation methods used in image enhancement?

As an introduction to gray-level transformations, consider Fig. 1, which shows three basic types of functions used frequently for image enhancement: linear (negative and identity transformations), logarithmic (log and inverse- log transformations), and power-law (nth power and nth root transformations).