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Video luminance transient improvement using difference-of-Gaussian
Wang Yangang; Chen Xi; Han Hua; Peng Silong; Yangang Wang
Conference Name2009 15th Asia-Pacific Conference on Communications APCC 2009
Pagespp 249-253
Conference Date2009/10/8-2009/10/10
Conference Place中国Shanghai China
AbstractLuminance Transient Improvement (LTI) technique is widely used to enhance the sharpness of digital images or videos. In this paper a high-performance and low-complexity LTI method is proposed for practical video processing applications. Utilizing the favorable characteristics of Gaussian function the proposed algorithm generates the correction signal using the difference of the outputs of two Gaussian filters with different variances and then modulates the correction signal adaptively according to the local contrast information of images or video frames. It finally utilizes a 2-D min/max nonlinear filter to suppress overshoots and undershoots appearing around edges in the video frame. And the critical modules are analyzed for practical hardware implementation for their simplicity. The performance of the method are highly confirmed by practical experimental results and proven to be effective and efficient in making steeper edges and improving the visual quality of images or video frames while suppressing noise and reducing artifacts to a desired extent.
KeywordVideo Enhancement Luminance Transient Improvement Difference-of-gaussian
Document Type会议论文
Corresponding AuthorYangang Wang
Recommended Citation
GB/T 7714
Wang Yangang,Chen Xi,Han Hua,et al. Video luminance transient improvement using difference-of-Gaussian[C],2009:pp 249-253.
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