Automatic gamma correction based on average of brightness
Pedram Babakhani, Parham Zarei · Advances in computer science : an international journal · 2015
Preprocessing is essential stage in image processing because of limitation of imaging device or inappropriate environmental light. This paper presents a preprocessing technique for estimating the amount of gamma correction in the absence of any information or knowledge about environmental light and imaging device. The basic approach exploits the amount of gamma correction based on average brightness. The amount of gamma correction is then estimated by a power which transports average of brightness to center of histogram .