| 基于SNR的数字图像置乱程度评价方法 |
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| 引用本文： | 李志伟,陈燕梅,张胜元.基于SNR的数字图像置乱程度评价方法[J].厦门大学学报(自然科学版),2006,45(4):484-487. |
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| 作者姓名： | 李志伟 陈燕梅 张胜元 |
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| 作者单位： | 1. 福建泉州师范学院数学系,福建,泉州,362000
2. 福建师范大学数学与计算机科学学院,福建,福州,350007 |
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| 基金项目： | 国家自然科学基金，福建省泉州市科技重点项目 |
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| 摘 要： | 数字图像置乱在信息隐藏和数字水印中具有广泛的应用,对图像置乱程度的评价尤为重要.由于置乱图像的"乱"是相对的视觉效果,基于此,本文将均方信噪比(SNR)与图像的最优分块处理相结合,提出了一种基于SNR的数字图像置乱程度的评价方法.实验结果表明,该方法能够较好地刻划图像的置乱程度及反映加密次数与置乱程度的关系,与人的视觉基本相符.
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| 关 键 词： | 数字图像 图像变换 置乱变换 信噪比 置乱程度 |
| 文章编号： | 0438-0479(2006)04-0484-04 |
| 收稿时间： | 11 16 2005 12:00AM |
| 修稿时间： | 2005年11月16 |
Digital Image Scrambling Degree Evaluation Method Based on SNR |
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| LI Zhi-wei,CHEN Yan-mei,ZHANG Sheng-yuan.Digital Image Scrambling Degree Evaluation Method Based on SNR[J].Journal of Xiamen University(Natural Science),2006,45(4):484-487. |
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| Authors: | LI Zhi-wei CHEN Yan-mei ZHANG Sheng-yuan |
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| Institution: | 1. Dept. of Mathematics, Quanzhou Normal Univesity, Quanzhou 362000, China ;2. School of Mathematics and Computer Science, Fujian Normal University, Fuzhou 350007,China |
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| Abstract: | In the context of information hiding and digital watermarking,it is important to evaluate the image scrambling degree.Because the chaos of the scrambled image is the relative visual effect,this article unifies the mean square signal-to-noise ratio SNR and the image optimal block processing,and proposes a digital image scrambling degree evaluation method based on SNR.Experiment results show that the proposed method is effective to assess the relationship between the enciphering effect and the number of iterations in the enciphering techniques,which tallies with person's vision basically. |
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| Keywords: | digital image image transformation scramble transformation SNR image scrambling degree |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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