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Description: 基于contourlet的图像边缘检测,运用dsp进行处理,建议大家好好看一下了,有助于大家更好的学习与实践啊!-Edge Detection using dsp processed suggest that you look at the good, we better contribute to the study and practice ah!
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Size: 6921 |
Author: hsb2000 |
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Description: 基于contourlet的图像边缘检测,运用dsp进行处理,建议大家好好看一下了,有助于大家更好的学习与实践啊!-Edge Detection using dsp processed suggest that you look at the good, we better contribute to the study and practice ah!
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Size: 7168 |
Author: hsb2000 |
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Description: Contourlet变换结合了不可分离的方向滤波组,具备小波所不能表达的多方向特性,能有效捕获自然图像的边缘轮廓信息。本文分析了图像ontourlet系数的统计特征,并利用广义高斯函数对各子带系数层进行建模。将此模型应用于基于VisTex的自建纹理图像库,采用矩匹配估计法,提取模型参数集,运用K2L距离计算图像间的相似度。对800幅纹理图像进行检索,本文方法比传统小波方法的平均检索查准率高出约2％到10％不等。实验结果表明,该方法改进了导向纹理的描述-Transform Contourlet inseparable combination of the direction of filtering group, have not expressed by wavelet multi-directional properties, can effectively capture the edge of natural image contour information. This paper analyzes the image ontourlet coefficient statistical characteristics, and take advantage of the generalized Gaussian function of the sub-band coefficient modeling layer. Based on this model was applied to the self-VisTex texture image database, using moment matching estimation method, extract the model parameters set, K2L use of distance-based similarity between images. Of 800 texture image retrieval, wavelet method than the traditional method of the average retrieval precision by about 2 to 10 range. Experimental results show that the method improves the texture-oriented description of
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Size: 198656 |
Author: 焦亚民 |
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Description: 用contourlet进行人脸边缘的检测<matlab>-Contourlet to face with the edge detection
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Size: 1024 |
Author: Samantha |
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Description: 基于第三代小波—轮廓波的工具包，对做图像处理方面研究应该大有帮助，也是个比较前沿的图像处理算法-Based on third-generation wavelets- Contour wave toolkit for doing image processing research should go a long way, but also a relatively cutting-edge image processing algorithms
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Size: 452608 |
Author: 李敏 |
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Description: contourlet算法处理叶子边缘的算法，用于统计叶子的牙齿。非常好。-contourlet leaf edge algorithm processing algorithms for statistical leaves teeth. Very good.
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Size: 1024 |
Author: 求是赤子 |
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Description: 基于非下采样轮廓波的边缘提取文献。很好的参考价值-Based contourlet edge extraction literature nonsubsampled. Good reference value
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Size: 1718272 |
Author: 张凡 |
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Description: 提出了一种基于非下采样Contourlet 变换的自适应图像去噪方法 首先对噪声图像进行非下采样Contourlet 变换，得到各
个尺度各个方向子带的系数，再根据该系数的能量自适应地调整去噪阈值 实验表明，与Contourlet 多尺度阈值去噪 Contourlet 自
适应阈值去噪相比，该方法在保留图像边缘细节的同时，能提高图像的PSNR 值，减少了Gibbs 现象-A new adaptive method of image de-noising based on NonSubsampled Contourlet Transform （NSCT）is presented.Firstly，
the noisy image is decomposed into a set of multiscale and multidirectional frequency subbands by NSCT， and then the threshold
is adapted automatically according to the energy of subband coefficients.Compared with the multi-scale threshold using contourlet
transform and using adaptive threshold based on contourlet transform， the simulation results show that the performance of this
method is superior in PSNR， meanwhile it can maintain the image edge and reduce the Gibbs phenomen
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Size: 200704 |
Author: jjdjjf |
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Description: 提出了一种基于非下采样 Contourlet变换 ( NSCT)和马尔科夫随机场 (MRF)相结合的纹理图像分割算法。算法包括两
个步骤, 首先通过 NSCT实现对图像纹理特征的提取, 并使用模糊 C-均值完成对图像的初始分割 然后将初始分割结果用 MRF模型
表示, 通过贝叶斯置信传播得到图像的最终分割结果。实验结果表明, 对于纹理图像,该方法在分割错误率、 区域一致性以及边缘的
准确性方面都比传统小波变换的方法有了明显的改善。-A tex ture i m age seg m entation a l go rithm based on comb i nati on of non-down sa m pling Contourlet transfor m ( NSCT) andM arkov
rando m fi e l d model is proposed . The algorithm consists o f t wo steps . F ir st , the tex t u re f ea t ure of i m ag e is ex trac ted by NS CT, and the i m age
is seg m ented i n itia lly by fuzzy c- m eans Second , the pr i m aril y seg m ented results are expressed byMRF mode, l and the fi nal seg m entati on re-
s u lts are ga i ned v i a Bayes beli e f propag ati on . The exper i menta l resu lts show tha t this a l gor it hm is effecti ve fo r tex t ure i m age , it prov i desm uch
better res u lts i n erro r ra te o f segm enta tion , reg ion ho m ogene ity and edge accuracy than tho se of trad iti onal w ave let transf o r m ing m ethods
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Size: 216064 |
Author: jjdjjf |
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Description: Contourlet结合Canny实现边缘检测的文章。-Contourlet combine Canny edge detection article.
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Size: 698368 |
Author: 黄亮 |
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Description: A filter bank structure that can deal effectively with piecewise smooth images with smooth contours, was proposed by Minh N Do and Martin Vetterli. The resulting image expansion is a directional multiresolution analysis framework composed of contour segments, and thus is named contourlet. This will overcome the challenges of wavelet and curvelet transform. Contourlet transform is a double filter bank structure. It is implemented by the pyramidal directional filter bank (PDFB) which decomposes images into directional subbands at multiple scales. In terms of structure the contourlet transform is a cascade of a Laplacian Pyramid and a directional filter bank. In essence, it first use a wavelet-like transform for edge detection, and then a local directional transform for contour segment detection. The contourlet transform provides a sparse representation for two-dimensional piecewise smooth signals that resemble images.
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Size: 14336 |
Author: Aynesh |
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Description: 该文基于非下采样Contourlet变换(NSCT)和SAR图像的统计特性，提出一种SAR图像增强方法，给出一种基于非下采样塔型分解的斑点噪声方差估计算法和一种基于方向邻域模型的弱边缘增强算法-Based on nonsubsampled Contourlet transform and SAR image statistical property, a SAR image enhancement method is proposed. A speckle noise variance estimate algorithm is given using nonsubsampled
Laplace Pyramid decompose, and a wake edge enhancement algorithm using directional local neighborhood is
proposed.
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Size: 4869120 |
Author: 刘璐 |
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Description: 可控金字塔可以很好的控制方向，比非下采样contourlet的方向分解更好一些。(used for edge detection)
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Size: 3124224 |
Author: 咪咪默默
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