Video luminance transient improvement using difference-of-Gaussian
Wang Yangang; Chen Xi; Han Hua; Peng Silong; Yangang Wang
2009
会议名称2009 15th Asia-Pacific Conference on Communications APCC 2009
页码pp 249-253
会议日期2009/10/8-2009/10/10
会议地点中国Shanghai China
摘要Luminance 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.
关键词Video Enhancement Luminance Transient Improvement Difference-of-gaussian
文献类型会议论文
条目标识符http://ir.ia.ac.cn/handle/173211/12878
专题智能制造技术与系统研究中心_多维数据分析
通讯作者Yangang Wang
推荐引用方式
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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