Adaptive Enhancement algorithm using image Decomposition for non-uniform illuminated images

摘要

The objectivity of illumination and reflectance has been the continuous thrust area in image analysis and enhancement. To achieve better quality, the researchers have focused on improving contrast enhancement and brightness preservation of mainly non- uniform images. This paper reviews the computational techniques evolved for improving the visual quality of images. The discussion has been focused on multi-scale decomposition approach to achieve the desired variation in contrast and brightness of the images. The multi-scale approach is termed as a combination of coarse and detail coefficients of the input image. So, it may be said that the detail characteristics are evaluated to study directional variations of the intensity in the images.