J4 ›› 2011, Vol. 29 ›› Issue (5): 444-450.

• 论文 • 上一篇    下一篇

基于形态学边缘保持的自适应超分辨率重建

唐庭阁|杨欣|周大可|姜斌   

  1. 南京航空航天大学 自动化学院|南京 |210016
  • 出版日期:2011-09-24 发布日期:2011-11-29
  • 作者简介:唐庭阁(1987—)|男|黑龙江佳木斯人|南京航空航天大学硕士研究生|主要从事数字图像处理、超分辨率研究|(Tel)86-25-84892305-5112(E-mail)tangtingge@163.com;杨欣(1978—)|男|江苏镇江人|南京航空航天大学副教授|硕士生导师|主要从事导航制导与控制、智能控制、模式识别和计算机视觉研究|(Tel)86-25-84892305-5112(E-mail)yangxin@nuelaa.edu.cn
  • 基金资助:

    国家自然科学基金资助项目(60905009);高等学校博士学科点专项科研基金资助项目(20093218120015 );中国科学院遥感应用研究所、北京师范大学遥感科学国家重点实验室开放基金资助项目(2009KFJJ012);南京航空航天大学基本科研业务费专项科研基金资助项目(NS2010081)

Adaptive Super-Resolution Method Based on Morphological-Edge Preserving Operator

TANG Ting-ge|YANG Xin|ZHOU Da-ke|JIANG Bin   

  1. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016|China
  • Online:2011-09-24 Published:2011-11-29

摘要:

针对正则化MAP(Maximum a Posteriori Probability)超分辨率算法重建结果细节不够清晰,正则化参数选取的鲁棒性较差,运算速度慢等问题,提出基于形态学边缘保持的自适应超分辨率算法。首先基于形态学定义边缘保持算子,该算子能随着迭代过程自适应调整;其次,将该算子作用于超分辨率重建的正则项,从而在图像的边缘区域加强约束重建,而在图像的平滑区域加强正则化。实验结果表明,改进算法的细节更加清晰,正则化参数的鲁棒性更好,运算速度更快。

关键词: 超分辨率, 最大后验概率, 正则化

Abstract:

Aiming at the restoration of blurred image, an improved adaptive super-resolution algorithm proposed which is based on morphological edge preserving operator. First, we define a morphology edge preserving operator,and the operator can keep adaptive adjustment as iteration.Secondly, applying the operator to the regularization during super-resolution reconstruction, so the constraint reconstruction is reinforced in the edge region and the regularization is emphasized in the smooth region. Experimental results demonstrate that the improved method preserves edges clearer and has better result in speed and robust for the regularization parameter.

Key words: super-resolution, maximum a posteriori probability(MAP), regularized

中图分类号: 

  • TP391