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基于正则化处理的超分辨率重建 被引量:11

Super-resolution Reconstruction Based on Regularization
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摘要 针对超分辨率重建的病态反问题进行研究。该文首先介绍超分辨率重建的数学模型,分析了最小二乘估计及其病态性。其次给出病态问题的正则化泛函,并提出一种自适应动态确定正则化系数的方法,主要研究了迭代算法的收敛性和参数选择等问题。实验结果验证了方法的有效性。 In this paper, the ill-posed inverse problem of super-resolution reconstruction is concerned. Firstly, the mathematical model of super-resolution reconstruction is given, and the ill-posed property of the least square estimation is analyzed. Then, the regularization of ill-posed problem is processed by modifying the original energy functional, and an adaptive dynamic method is proposed for the choice of the regularization coefficient. Finally, the convergence of the iteration formula and the choice of parameter are thoroughly studied. Experimental results demonstrate the effectiveness of the proposed method.
出处 《电子与信息学报》 EI CSCD 北大核心 2007年第7期1713-1716,共4页 Journal of Electronics & Information Technology
基金 江苏省高等学校研究生创新计划(XM04-33)资助课题
关键词 图像处理 超分辨率重建 反问题 正则化 Image processing Super-resolution reconstruction Inverse problem Regularization
作者简介 韩玉兵:男,1971年生,博士,讲师,研究方向为数字视频和图像处理、通信信号处理. 吴乐南:男,1952年生,教授,博士生导师,研究方向为多媒体信息处理、通信信号处理. 张冬青:女,1971年生,博士生,研究方向为统计信号处理、时间序列分析.
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参考文献11

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