Adjustable weighting image contrast enhancement algorithm and its implementation

Image Enhancement using Edge Sharpening and Bidirectional Smooth Histogram Stretching

“…In this section, five image enhancement algorithms are carried out in our experiments AWICE [13], AGCCID [14] and VHA [15] and proposed methods "LBDSH", "WLBDSH". Subjective and Objective assessments both are done on a group of images.…”

“…He et al propose a method "Adjustable Weighting Image Contrast Enhancement Algorithm and Its Implementation" [13] in which weighted average of histogram equalization, exponential transformation and also input image histogram are combined and achieved contrast enhancement. In this method level of the contrast improvement is adjusted by changing the weighting coefficients.…”

Contrast Enhancement using Improved Adaptive Gamma Correction with Weighting Distribution Technique

“…Renjie He, Sheng Luo, Zhanrong Jing and Yangyu Fan developed a method in which the weighted average of histogram equalization and exponential transformation are combined and the level of the contrast improvement is adjustable by changing the weighting coefficients. The algorithm achieved adjustable contrast enhancement for color images and also decreased the effect of rising intensity on colors of image [1].…”

“…An image can have low contrast or bad quality due to a number of reasons like poor quality of imaging device, adverse external conditions at the time of image acquisition and many more. The contrast enhancement is one of the commonly used image enhancement method [1].…”