My essay

Analysis of the results:
To enhance the image by using histogram equalization means we are transforming the histogram of a given image into an approximately uniform histogram.

Let the grey levels rk, k=0,1, …, L-1 occur with probabilities pr(rk) estimated by:
pr(rk) = nk / N, 0<= rk <= 1 and k=0,1, …, L-1

where L is the number of grey levels,
nk is the number of times the k-th grey level rk occurs in the image, and
N is the total number ...