A Critical View on Image Enhancement Techniques

Image enhancement is one of the most popular algorithms used in vision applications for improving the visibility of the digital images. Recently much work is done in the different fields like medical, remote sensing, military applications etc. to improve the visibility of digital images. Many algorithms have been proposed so far for enhancing the digital images. This paper has review different image enhancement techniques. It has been found that the most of the existing researchers have neglected many issues; i.e. no technique is accurate for different kind of circumstances. The existing methods have neglected the use of illuminate normalization to reduce the problem of poor brightness which will be presented in the image due to poor weather conditions. It is also found that the color artefacts which will be presented in the output image due to the transform domain methods; also neglected by the most of the researchers.