| 基于差分进化的置换混叠图像盲分离 |
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| 引用本文： | 段新涛,方勇.基于差分进化的置换混叠图像盲分离[J].系统仿真技术,2011,7(3):196-202. |
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| 作者姓名： | 段新涛 方勇 |
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| 作者单位： | 1. 上海大学通信与信息工程学院,特种光纤与光接入网重点实验室,上海200072;河南师范大学计算机与信息技术学院,河南新乡453000
2. 上海大学通信与信息工程学院,特种光纤与光接入网重点实验室,上海200072;新型显示技术与应用集成教育部重点实验室,上海200072 |
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| 基金项目： | 国家自然科学基金资助项目，上海市科委重点实验室资助项目，上海市重点学科基金资助项目，上海市教委科研创新重点资助项目 |
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| 摘 要： | 针对1类存在模糊差异的置换混叠图像,提出了1种基于差分进化的置换混叠图像盲分离算法。选择空域作为特征域,将置换混叠图像的梯度图像分成小块,并为每个小块设定个阈值,组成1个阈值向量。利用差分进化算法获得最优的阈值向量,将置换混叠图像阈值化为二值图像,利用图像形态学实现二值图像分离出置换图像。实验结果表明,与阈值法相比较,本算法能较好地把置换图像从置换混叠图像中分离出来,而不受置换图像位置、大小和个数的限制。
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| 关 键 词： | 置换混叠图像 盲分离 差分进化 模糊差异 |
Blind Separation for Permuted Alias Image Based on Differential Evolution |
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| DUAN Xintao,FANG Yong.Blind Separation for Permuted Alias Image Based on Differential Evolution[J].System Simulation Technology,2011,7(3):196-202. |
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| Authors: | DUAN Xintao FANG Yong |
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| Affiliation: | 1. School of Communication and Information Engineering, Key Laboratory of Specialty Fiber Optics and Optical Access Networks,Shanghai University,Shanghai 200072,China; 2. Key Laboratory of Advanced Display and System Applications,Shanghai 200072,China; 3.School of Computer and Information Technology,Henan Normal University,Xinxiang 453000,China) |
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| Abstract: | In this paper,a blind separation algorithm based on differential evolution was proposed for a type of permuted alias image with blur difference. Space domain was selected as characteristic domain.The gradient image of permuted alias image was divided into sub-blocks which was randomly assigned a threshold and all the thresholds formed a threshold vector. The differential evolution was then performed to obtain the optimal threshold vector for thresholding the differential image into binary one. The permuting image could be separated by permuted alias image multiplid by the binary image optimized with image morphology operating. Experimental results showed that,compared with thresholding approach, the proposed approach could effectively separate the permuting image from the permuted alias image without respect to the location, size and nemuber of permuting image. |
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| Keywords: | permuted alias image blind separation differential evolution（DE） blur difference |
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