How is Weighted Thresholded Histogram Equalization different from Gamma Correction Image enhancement
This Method can very well pass for being Gamma Correction Technique as We are Increasing the Weight of the Less probable Intensities in the Image  by the Exponential Factor r So that the Less Clear Details may be Visible upon the increase in their Weight thus Providing a Enhanced Image , On the Similiar Note the Gamma Correction Function Does this by using Power Law Transformation.