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DOI:
Journal of Software:2009.20(6):1694-1702

TV图像插值的双方向扩散改进算法
詹毅,王明辉,万群,李梦
(四川大学 计算机学院,四川 成都 610065;成都电子科技大学 电子工程学院,四川 成都 610054;重庆大学 数理学院,重庆 400030)
Modified Algorithm with Bidirectional Diffusion for TV Image Interpolation
ZHAN Yi,WANG Ming-Hui,WAN Qun,LI Meng
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Received:July 13, 2008    Revised:November 28, 2008
> 中文摘要: 提出了一种双方向扩散图像插值方法,有效地减小了插值图像的边缘宽度,从而获得清晰而光滑的图像边缘.这种双方向扩散在图像边缘斜坡较亮一侧进行前向扩散,而在边缘斜坡较暗一侧进行后向扩散.同时,它能根据图像边缘的特征自适应地调整前向、后向扩散强度,从而避免了在插值的图像中产生虚的纹理或边缘.数值实验结果显示,该方法既能很好地减小插值图像的边缘宽度,又不会产生其他人工虚像.
Abstract:In this paper a method of image interpolation based on bidirectional diffusion is proposed. With this method, the edge width of interpolated images is effectively reduced and crisp and smooth edges are obtained. In this bidirectional diffusion, forward diffusion occurs in brighter lateral on edge ramp and backward diffusion proceeds in darker lateral. And the intensity of diffusion is adjusted adaptively according to the image features, which avoid the appearance of artifacts and false textures in the interpolated image. Numerical experiments on real images show that images interpolated with the proposed method have smaller edge width and are almost artifact-free.
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基金项目:Supported by the National Natural Science Foundation of China under Grant No.60672096 (国家自然科学基金) Supported by the National Natural Science Foundation of China under Grant No.60672096 (国家自然科学基金)
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詹毅,王明辉,万群,李梦.TV图像插值的双方向扩散改进算法.软件学报,2009,20(6):1694-1702

ZHAN Yi,WANG Ming-Hui,WAN Qun,LI Meng.Modified Algorithm with Bidirectional Diffusion for TV Image Interpolation.Journal of Software,2009,20(6):1694-1702