A New Approach for Sharpness and Contrast Enhancement of an Image
Journal Title: International Journal of Advanced Research in Computer Engineering & Technology(IJARCET) - Year 2012, Vol 1, Issue 4
Abstract
unsharp masking is good tool for sharpness enhancement, it is an anti blurring filter. By using unsharp masking algorithm for sharpness enhancement, the resultant image suffering with two problems, first one is a hallo is appear around the edges of an image, and second one is rescaling process is needed for the resultant image. Enhancement of contrast and sharpness of an image is required in many applications. The aim of this paper is to enhance the contrast and sharpness of an image simultaneously and to solve the problems associated with normal unsharp masking, we proposed new algorithm based on exploratory data model concept. In the retinex based algorithm is used to enhance the contrast of an image, edge preserving filter is used to solve the hallo effect, and tangent operations are given solution to avoiding rescaling process. The experimental results show that the proposed algorithm is able to significantly improve the contrast and sharpness of an image compare to the existing method, and it solve the problems associated with the existing method and the user can adjust the two parameters controlling the contrast and sharpness to produce the desired results. This makes the proposed algorithm practically useful.
Authors and Affiliations
M. Obulesu, , V. Vijaya Kishore,
Keywords
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