Review of Various Image Contrast Enhancement Techniques

Image enhancement is a processing on an image in order to make it more appropriate for certain applications. It is used to improve the visual effects and the clarity of image or to make the original image more conducive for computer to process. In this paper we are going to review the different image contrast enhancement techniques. Image Enhancement techniques increase the contrast of image which is result produce better picture. There are many image contrast enhancement techniques like Linear Starching, Histogram Equalization, Adaptive Histogram Equalization, Convolution Mask Enhancement and Enhancement by Point Processing. This paper focuses on the comparative study of contrast enhancement techniques with special reference to local and global enhancement techniques. Also proposed solution is identified to apply to this enhancement technique. This novel method will use in many fields, such as medical image analysis, remote sensing, HDTV, hyper spectral image processing, industrial Xray image processing, microscopic imaging etc.