How would a Linear Gray Level Transform affect an image? [closed]

1. What happens when you grayscale an image?
2. How is an image transformed into grey level image?
3. Which gray level transformation increases the dynamic range of gray level in the image?
4. What are the gray level transformation methods used in image enhancement?

What happens when you grayscale an image?

‍What is grayscale in image processing? It is an image conversion technique in digital photography. It eliminates every form of colour information and only leaves different shades of gray; the brightest being white and the darkest of it being black.

How is an image transformed into grey level image?

s = c log(r + 1). Where s and r are the pixel values of the output and the input image and c is a constant. The value 1 is added to each of the pixel value of the input image because if there is a pixel intensity of 0 in the image, then log (0) is equal to infinity. So 1 is added, to make the minimum value at least 1.

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

Contrast Stretching:

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

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).