Systems and methods thereof for image correction are provided in an exemplary method, an image is received and pixels therein are read. A frequency value is calculated for each of the color scale values, representing how many pixels correspond to each of the color scale values. A color-scale threshold is acquired by limiting summation of frequency values from the brightest end to the color-scale threshold being a minimum value exceeding or equaling a ratio of pixels. Lower/upper limits are acquired by respectively adding/subtracting a range value to/from the color-scale threshold. A weighted value is acquired for the pixels with pixel values between the lower color-scale limit and the upper color-scale limit. The updated image is generated by replacing pixel values between the lower limit and upper limit with the weighted value.
