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特征选择与提取zch
自编的用于图像特征提取的源程序,解压后直接运行就ok了(writing for Feature Extraction source, unpacked directly ok on the run)
- 2020-06-30 02:00:02下载
- 积分：1
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PG_BOW_DEMO
图像的特征用到了Dense Sift，通过Bag of Words词袋模型进行描述，当然一般来说是用训练集的来构建词典，因为我们还没有测试集呢。虽然测试集是你拿来测试的，但是实际应用中谁知道测试的图片是啥，所以构建BoW词典我这里也只用训练集。
其实BoW的思想很简单，虽然很多人也问过我，但是只要理解了如何构建词典以及如何将图像映射到词典维上去就行了，面试中也经常问到我这个问题，不知道你们都怎么用生动形象的语言来描述这个问题？
用BoW描述完图像之后，指的是将训练集以及测试集的图像都用BoW模型描述了，就可以用SVM训练分类模型进行分类了。
在这里除了用SVM的RBF核，还自己定义了一种核： histogram intersection kernel，直方图正交核。因为很多论文说这个核好，并且实验结果很显然。能从理论上证明一下么？通过自定义核也可以了解怎么使用自定义核来用SVM进行分类。(Image features used in a Dense Sift, by the Bag of Words bag model to describe the word, of course, the training set is generally used to build the dictionary, because we do not test set. Although the test set is used as the test you, but who knows the practical application of the test image is valid, so I am here to build BoW dictionary only the training set.
In fact, BoW idea is very simple, although many people have asked me, but as long as you understand how to build a dictionary and how to image map to the dictionary D up on the line, and interviews are often asked me this question, do not know you all how to use vivid language to describe this problem?
After complete description of the image with BoW, refers to the training set and test set of images are described with the BoW model, the training of SVM classification model can be classified.
Apart from having to use the RBF kernel SVM, but also their own definition of a nuclear: histogram intersection kernel, histogram )
- 2011-11-01 17:01:09下载
- 积分：1
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HappyVDay_matlab-code
matlab code for the v shape recognition in heart shape
- 2013-03-13 21:38:16下载
- 积分：1
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四叉树分割
说明： 图像四叉树分解，对于图像灰度值进行四叉树分解，并覆盖原图显示(Image quadtree decomposition)
- 2020-01-03 23:34:33下载
- 积分：1
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workspace
自己做的3-PSS并联机器人可达工作空间绘制的MATLAB程序，
workspace_main.m为主程序，在MATLAB中进入解压缩后的文件夹并运行workspace_main即可完成绘图。
另外Trirspace.m为3-RRR平面并联机器人可达工作空间的绘图程序，调用方法相同。(The 3-PSS parallel robot designed by myself can reach the MATLAB program drawn in workspace.
The workspace_main.m is the main program. The drawing can be completed by entering the decompressed folder in MATLAB and running workspace_main.
In addition, the drawing program of 3-RRR planar parallel robot reachable workspace is called by the same method.)
- 2018-11-12 16:12:32下载
- 积分：1
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Arnold
对于图像进行ANORLD变换，在图像嵌入水印的过程中，可以对要嵌入的水印图像先进性置乱操作，可以有效地抵抗剪切攻击(For images ANORLD transform, watermark embedding in the image of the process, can the watermark image to embed the advanced nature of the scrambling operation, can effectively attack the shear resistance)
- 2007-11-16 21:52:45下载
- 积分：1
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Matlab-Package-Book
稀疏表示，包括ksvd图像去噪，matlab程序，程序有详细注解，便于初学者学习，代码可以直接使用(Sparse representation, including ksvd image denoising， Matlab procedures, procedures are detailed notes, easy for beginners to learn, code can be used directly)
- 2020-11-23 01:39:34下载
- 积分：1
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xiangweixiangguan
关于相位相关的算法，用于配准，有些可以达到亚像素(on phase correlation algorithm for registration, and some can reach sub-pixel)
- 2016-05-11 18:07:17下载
- 积分：1
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Canny
说明： 用canny算子来检测图像边缘，VC++(Using canny operator to detect image edge)
- 2010-03-28 14:43:47下载
- 积分：1
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guided_filter
guided_filter滤波器。对于图像处理方面有用。(filter. It is useful for image processing.)
- 2016-12-07 17:03:33下载
- 积分：1
