The main purpose of image enhancement is to bring out detail that is hidden in an image or to increase contrast in a low contrast image. Image enhancement techniques provide a multitude of choices for improving the visual quality of images. Appropriate choice of such techniques is greatly influenced by the imaging modality, task at hand and viewing conditions. This paper analyses the performanc...

This paper reviews an introduction to various approaches to image contrast enhancement in the spatial domain using genetic algorithm and its extension based on population based incremental learning (PBIL). GA performs efficient search in global spaces to get an optimal solution. The algorithm does not require any prior knowledge about image in Order to select the appropriate enhancement functio...