| 1. | A digital watermarking algorithm based on subspace
基于分形压缩编码的数字水印技术 |
| 2. | Fractal theory has achieved a series success in the image processing , especially in fractal image coding
分形理论在图像处理方面已经获得了一系列成功的应用，特别是分形压缩编码。 |
| 3. | It is also improved effective in object recognition . fractal image coding can approximate any given image by capturing intrinsic self - similarities within the image
由于分形压缩编码中已经携带了图像的特征，因而可以利用它进行目标图像识别。 |
| 4. | Third , this paper makes full use of the correlation of color components of a color image . this method uses fractal affine transform combined with correlation of color components
3利用彩色图像三个色彩分量之间存在的密切的相关性，提出将上述分形压缩算法结合图像三分量之间的相关系数联合进行图像编码。 |
| 5. | The fractal compressing method based on iterative function system is good at detecting the extend of fractures . 4 . the application results of wavelet multiple resolution analysis are depend on the wavelet base chosen
( 3 )基于迭代函数系统的分形压缩方法，是一种自仿射分形方法，主要应用仿射变换，此方法对裂缝的走向预测比较准确。 |
| 6. | Then , in the second chapter , we generalize the mathematical principle of fractal image compression . in the third chapter , we introduce jacquin ' s fractal image compres - sion method and fisher ' s self - adapted quadtree image compression method
第二章给出了分形压缩编码的数学原理和理论基础。第三章介绍了jacquin的分形压缩编码方法和fisher的自适应四叉树编码方法。 |
| 7. | In comparison with the abilities of two fractal image compressions , the fractal image compression method based on region partition can gain higher compression ratio as the same of sign to noise rate , which compression ability is improved obviously
通过对两种分形压缩方法性能的比较，基于区域划分的分形图象压缩方法可以在相同的性噪比下达到更高的压缩比，压缩性能显著提高。 |
| 8. | It is well known that too long encoding time is the main drawback of this technique , in fact , prevent fractal image compression from becoming a practical method for image compression , hence fast encoding has become a hot issue in fractal image compression
众所周知,编码时间长是这项技术的主要缺点,它已成为该方法走向高效能实用化的最主要障碍,因此分形编码加速方法已成为了近些年来分形压缩的一个研究热点。 |
| 9. | With the mass application of the image in the contemporary world , the research of the image compression technology becomes more and more impera - tive . the fractal image compression technology was proposed by american math - ematican barnsley and sloan [ 10 ] in 1987
分形图象压缩编码技术是由美国数学家barnsley和sloan于1987年提出的，此后jacquin首先实现了完全自动的分形压缩编码，给分形图象压缩领域带来突破性的进展。 |
| 10. | However , there ' s a especially unsatisfying problem in this method : too long encoding time , mainly because of the considerable number of domain blocks to compare with for each range block in encoding phase , which , in fact , prevent fractal image compression from becoming a practical method for image compression , hence fast encoding has become a hot issue in fractal image compression
但是，这种方法存在一个最大的问题：编码时间过长，主要是因为编码时定义域块的搜索量非常可观。这实际上已成为了该方法走向高效能实用化的最主要障碍，因此分形编码加速方法已成为了近些年来分形压缩的一个研究热点。 |
