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pcacode
程序设计步骤:
1、去均值
2、计算协方差矩阵及其特征值和特征向量
3、计算协方差矩阵的特征值大于阈值的个数
4、降序排列特征值
5、去掉较小的特征值
6、去掉较大的特征值(一般没有这一步)
7、合并选择的特征值
8、选择相应的特征值和特征向量
9、计算白化矩阵
10、提取主分量(Programming steps: 1 to mean 2, calculation of covariance matrix and its eigenvalues and eigenvectors 3, the calculation of covariance matrix eigenvalues greater than the threshold number of 4, in descending order of eigenvalue 5, remove the smaller eigenvalue 6, remove the larger eigenvalue (usually not this step) 7, the combined choice of eigenvalues 8, select the appropriate eigenvalues and eigenvectors 9, computing whitening matrix 10, principal component extraction)
- 2008-07-14 16:25:23下载
- 积分:1
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DE
说明:
最简单的差分格式有向前、向后和中心3种。
向前差分:f (n)=f(n+1)-f(n)
向后差分:f (n)=f(n)-f(n-1)
中心差分:f (n)=[f(n+1)-f(n-1)]/2(The easiest difference format forward, backward, and three kinds of centers.
Forward differencing: f (n) = f (n+ 1)-f (n)
Backward difference: f (n) = f (n)-f (n-1)
Central difference: f (n) = [f (n+ 1)-f (n-1)]/2)
- 2016-05-17 21:08:01下载
- 积分:1
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模式识别
说明: 对一副已经给出的图像进行中值滤波处理,利用罗伯特算子、索伯尔算子、canny算子、拉普拉斯算子,分别进行边缘检测。
具体见说明文档。(A given image is processed by median filter. Robert operator, Sobel operator, Canny operator and Laplace operator are used for edge detection.
See the instruction document for details.)
- 2021-01-30 21:56:57下载
- 积分:1
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2015.3.20
基于FRFT的数字图像水印(lena示例)(FRFT based digital image watermark (lena example))
- 2015-05-28 21:53:12下载
- 积分:1
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数字图像处理书籍
数字图像处理第三版,中文版,PDF文档,还算清晰(Chinese version of digital image processing)
- 2017-12-21 16:45:32下载
- 积分:1
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K-SVD
详细介绍了K-SVD字典训练的详细过程,对稀疏表示研究很有帮助.(Detailed introduces the K- SVD dictionary of detailed training process, the sparse say that research to have the help very much.
)
- 2012-10-30 14:11:04下载
- 积分:1
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image
图像灰度拉伸、直方图均衡算法以及FCM聚类算法。(Image stretching, histogram equalization algorithm and the FCM clustering algorithm.)
- 2008-08-10 13:11:12下载
- 积分:1
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Desktop
使用改进的点锐度算法对不同程度的模糊图像进行清晰度评价。(The improved algorithm of point sharpness is used to evaluate the blurred image in different degree.)
- 2021-03-02 10:19:34下载
- 积分:1
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ContrastSeg
一种改进的对比度分割算法。对红外图像有很好的分割效果。(an improved contrast ratio segmentation algorithm. The infrared image segmentation is a good result.)
- 2006-07-19 10:22:28下载
- 积分:1
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matlabPS
寻找照片PS痕迹的代码~大作业编写~可主要用于寻找添加图像块的PS边缘痕迹,(find the hint of a photo which has been PS)
- 2020-12-21 17:19:08下载
- 积分:1