| PIFS多分辨率特性研究 |
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| 引用本文： | 孙怀江,杨静宇. PIFS多分辨率特性研究[J]. 计算机学报, 1998, 21(11): 1042-1046 |
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| 作者姓名： | 孙怀江 杨静宇 |
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| 作者单位： | 南京理工大学计算机系,南京,210094 |
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| 摘 要： | 本文在更一般的条件下（二维，不同大小ｒａｎｇｅ块）证明了分形图像上压缩中ＰＩＦＳ（Ｐａｒｔｉ－ｔｉｏｎｅｄＩｔｅｒａｔｅｄＦｕｎｃｔｉｏｎＳｙｓｔｅｍ）不动点的多分辨率特性，即低分辨率不动点可以通过对高分辨率不动点进行收缩变换得到，高分辨率不动点可以通过对低分辨率不动点进行仿射变换得到，所得结论是Ｂａｈａｒａｖ等文中结论的推广。
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| 关 键 词： | 分形 PIFS 图像压缩 多分辨率 图像编码 计算机 |
| 修稿时间： | 1997-06-06 |
A STUDY ON PIFS''''S MULTIRESOLUTION PROPERTIES |
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| SUN Huai-Jiang,YANG Jing-Yu. A STUDY ON PIFS''''S MULTIRESOLUTION PROPERTIES[J]. Chinese Journal of Computers, 1998, 21(11): 1042-1046 |
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| Authors: | SUN Huai-Jiang YANG Jing-Yu |
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| Abstract: | Under more general conditions such as 2D, range blocks of different size, the multiresolution properties of PIFS's fixed point in fractal image compression are proved, i. e., the fixed points at low resolutions can be obtained from those at high resolutions through spatial contraction operator, while the fixed points at high resolutions can be obtained from those at low resolutions through affine operator. The resulted conclusions are generalizations of those presented by Baharav et al in 1995. |
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| Keywords: | Fractal PIFS image compression fixed point multiresolution |
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