Brightness Preserving Contrast Enhancement of Medical Images Using Adaptive Gamma Correction and Homomorphic Filtering

被引:0
作者
Tiwari, Mayank [1 ]
Gupta, Bhupendra [1 ]
机构
[1] PDPM Indian Inst Informat Technol Design & Mfg, Dept Math, Jabalpur, MP, India
来源
2016 IEEE STUDENTS' CONFERENCE ON ELECTRICAL, ELECTRONICS AND COMPUTER SCIENCE (SCEECS) | 2016年
关键词
medical image enhancement; histogram equalization; adaptive gamma correction; homomorphic filtering; contrast enhancement; brightness preservation; HISTOGRAM EQUALIZATION;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper we propose an efficient method to enhance contrast of medical images. Image contrast enhancement is a pre-processing step that improves efficiency of other image dealing applications such as pattern recognition and computer vision. The proposed method enhances contrast and preserves brightness of given image using the gamma correction and homomorphic filtering. This method uses two step processing, in first step global contrast of image is enhanced using the gamma correction and weighted probability distribution of luminance pixels and then in second step homomorphic filtering is used for image sharpening, in order to preserve image brightness this filtering if followed by image normalization. Experiments results show that the proposed method is able to enhance contrast of medical images without much affecting its brightness. This makes the proposed algorithm to be a flexible tool for medical image enhancement.
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页数:4
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