| 基于非线性小波变换的图像边缘分解方法 |
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| 引用本文： | 张雷,黄廉卿.基于非线性小波变换的图像边缘分解方法[J].电子与信息学报,2005,27(5):691-693. |
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| 作者姓名： | 张雷 黄廉卿 |
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| 作者单位： | 中国科学院长春光学精密机械与物理研究所,长春,130033;中国科学院长春光学精密机械与物理研究所,长春,130033 |
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| 摘 要： | 图像边缘分解重建过程中,为解决重建后的边缘振荡问题,提出无需对小波变换跃变点两侧延拓,采用非线性变换把能量集中到低频分量上,用精细尺度上小波变换模极大值对跃变点进行奇异性检测,用较少存储空间和计算量即可有效克服重建图像边缘振荡问题。
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| 关 键 词： | 图像压缩 边缘振荡 非线性小波 |
| 文章编号： | 1009-5896(2005)05-0691-03 |
| 收稿时间： | 2004-3-17 |
| 修稿时间： | 2004年3月17日 |
Nonlinear Wavelet Transform Based Image Edge Decomposition |
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| Zhang Lei,HUANG Lian-qing.Nonlinear Wavelet Transform Based Image Edge Decomposition[J].Journal of Electronics & Information Technology,2005,27(5):691-693. |
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| Authors: | Zhang Lei HUANG Lian-qing |
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| Affiliation: | Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun 130033 China |
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| Abstract: | Avoiding oscillation phenomenon which occurs in analysis and reconstruction of image edges, an application without extrapolation both sides is proposed. Image energy is concentrated in low frequency by using nonlinear transform, and the exact jumps location are detected by local maximum of wavelet transform in fine scale. Non-oscillation edges of reconstructed image are received with less storage space and computing time. |
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| Keywords: | Image compression Edge oscillation Nonlinear wavelet transform |
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