期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2013
卷号：2
期号：7
页码：2786
出版社：S&S Publications
摘要：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 forcomputer to process. Contrast enhancement changing the pixels intensity of the input image to utilize maximumpossible bins. We need to study and review the different image contrast enhancement techniques because contrastlosses the brightness in enhancement of image. By considering this fact, the mixture of global and local contrastenhancement techniques may enhance the contrast of image with preserving its brightness. There are many imagecontrast enhancement techniques such as HE, BBHE, DSIHE, MMBEBHE, RMSHE, MHE. BPDHE, RSWHE, GHE,LHE and LGCS. This paper focuses on the comparative study of contrast enhancement techniques with specialreference to local and global enhancement techniques. Also proposed solution is identified to apply to this enhancementtechnique. This novel method will use in many fields, such as medical image analysis, remote sensing, HDTV, hyperspectral image processing, industrial X-ray image processing, microscopic imaging etc.
