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Improvement of contrast of images in Poor Light: a Research and Analysis

Author(s): Divya Madaan | Sonia Chaudhary

Journal: International Journal of Computer Science and Management Studies
ISSN 2231-5268

Volume: 12;
Issue: 02;
Start page: 142;
Date: 2012;
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Keywords: Morphological operators | Weber’s law

In this paper, the four morphological operator’s erosion,dilation, opening and closing are used to detect thebackground. After the background is extracted, contrast ofbad lightning image is improved by the application ofoperators based on Weber’s law notion Two contrastenhancement operators Block Analysis method andOpening by Reconstruction method are used. Theseoperators avoid abrupt changes in intensity among differentregions .In the final step, we enhance the image by usingvarious filtering techniques. By applying filteringtechniques, our image will be of good contrast and freefrom bad lightning.

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