Journal of IKEEE (전기전자학회논문지)
- Volume 11 Issue 4
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- Pages.307-314
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- 2007
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- 1226-7244(pISSN)
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- 2288-243X(eISSN)
Image Contrast Enhancement Based on Tone Curve Control for LCD TV
- Kim, Sang-Jun (Dept. of Electrical Engineering, Korea University) ;
- Jang, Min-Soo (Dept. of Electrical Engineering, Korea University) ;
- Kim, Yong-Guk (School of Computer Engineering, Sejong University) ;
- Park, Gwi-Tae (Dept. of Electrical Engineering, Korea University)
- Published : 2007.12.31
Abstract
In this paper, we propose an image contrast enhancement algorithm for an LCD TV. The proposed algorithm consists of two processes: the image segmentation process and the tone curve control process. The first process uses an automatic threshold technique to decompose an input image into two regions and then utilizes a hierarchical structure for real-time processing. The second process generates a gray level tone curve for contrast enhancement using a weighted sum of average tone curves for two segmented regions. Experimental result shows that the proposed algorithm outperforms the conventional contrast enhancement methods for an LCD TV.
Keywords