| 彭海霞,王正勇,何小海,李滔,任超.基于振铃抑制的多视频超分辨率重建[J].光电子激光,2014,(9):1771~1776 |
| 基于振铃抑制的多视频超分辨率重建 |
| A multi-video super-resolution reconstruction algorithm based on the suppressi on of ringing artifacts |
| 投稿时间：2014-01-02 |
| DOI： |
| 中文关键词: 时空分辨率 迭代反投影(IBP) 自适应惩罚 |
| 英文关键词:space-time super-resolution iterative back projection (IBP) adaptive penalty |
| 基金项目:国家自然科学基金(61471248)和国家自然科学基金委员会和中国工程物理研究院联合基金(11176018)资助项目 , 何小海, 李滔, 任超 (四川大学 电子信息学院,四川 成都 610065) |
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| 中文摘要: |
| 为了利用较少低分辨率视频序列实现多视频超分辨 率重建,本文提出一种将时空分别进行重建的算法。首先利用已有 方法进行时间重建,再以得到的高时间分辨率的视频序列帧为参考帧,结合输入低分辨率视 频序列帧进行空间重建。此外, 针对传统重建方法在配准不精确的情况下会产生振铃现象这一问题,提出一种加入自适应惩 罚项的改进迭代反投影(IBP)算 法。实验结果表明,本文算法在输入低分辨率序列较少的情况下,能较好地实现多视频超分 辨率重建,且能有效抑制振铃现象；重建出的高分辨率视频序列的结构相似度较对比算法提 高3．4％～6．1％；在主观感受上,图像边缘锐利、人工效应少。 |
| 英文摘要: |
| In order to implement multi-video sup er-resolution reconstruction with less low-resolution video sequences,a method for reconstructing the time and space super-resolutions respectively is introdu ced in this paper.Temporal resolution is enhanced by utilizing the proposed method,and then a high space-time resolution video s equence is acquired combined with the reconstructed video sequence and the input low-resolution video sequences,using the reconstructed v i deo sequence frame as the reference frame.Besides,the traditional reconstruction method would produce ringing effect in the case of in accurat e registration.For such a problem,the improved iterative back projection (IBP) algorithm with adaptive penalty term is proposed .Experimental results show that the proposed algorithm can achieve multi-video super-resolution reconstru ction in the case of less low-resolution video sequences,and can suppress ringi ng effectively.The structure similarity image measure of high space-time resolu tion video sequence,which is reconstructed by proposed algorithm,can increase by 3.4%～6.1% compared with that of the conventional approaches.The reconstructed video sequence has sharper edges and less artificial effect. |
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