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International Journal of Advanced Engineering, Management and Science


Enhancement of Medical Images using Histogram Based Hybrid Technique

( Vol-2,Issue-9,September 2016 )

Author(s): Navjot Kaur, Er. Harpal Singh



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Downloads : 30
Page No: 1425-1432
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Keywords:

Histogram Equalization (HE), BBHE, RSWHE, AGWCD, PSNR, MSE, Enhancement.

Abstract:

Digital Image Processing is very important area of research. A number of techniques are available for image enhancement of gray scale images as well as color images. They work very efficiently for enhancement of the gray scale as well as color images. Important techniques namely Histogram Equalization, BBHE, RSWHE, RSWHE (recursion=2, gamma=No), AGCWD (Recursion=0, gamma=0) have been used quite frequently for image enhancement. But there are some shortcomings of the present techniques. The major shortcoming is that while enhancement, the brightness of the image deteriorates quite a lot. So there was need for some technique for image enhancement so that while enhancement was done, the brightness of the images does not go down. To remove this shortcoming, a new hybrid technique namely RESWHE+AGCWD (recursion=2, gamma=0 or 1) was proposed. The results of the proposed technique were compared with the existing techniques. In the present methodology, the brightness did not decrease during image enhancement. So the results and the technique was validated and accepted. The parameters via PSNR, MSE, AMBE etc. are taken for performance evaluation and validation of the proposed technique against the existing techniques which results in better outperform.

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