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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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PCNN_toolbox
脉冲耦合神经网络算法的MATLAB工具箱，希望对大家有用(Pulse Coupled Neural Network Algorithm MATLAB Toolbox, in the hope that useful)
- 2009-01-02 10:52:56下载
- 积分：1
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NR
说明： 基于邻域的比例算法求两幅图像的差异图，用于变化检测。(The proportion of neighborhood-based algorithms to find the difference of the two images map for change detection.)
- 2013-04-14 11:19:19下载
- 积分：1
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Kalman
基于卡尔曼滤波器的监控系统的设计，实现了对运动目标进行识别，并对其运动轨迹进行预测的功能；当二值化图像超过一定阈值时，判断为有外人入侵，实现报警功能。(Kalman filter based on the design of monitoring system to achieve the recognition of moving objects, and its motion trajectory prediction function when the binary image exceeds a certain threshold, to determine the invasion of outsiders, to achieve alarm function.)
- 2016-11-11 17:37:29下载
- 积分：1
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STF
强跟踪滤波器，实现匀速目标和机动性目标的精确跟踪，达到了很好的跟踪效果(the case of tracking the moving target using the strong tracking filter)
- 2015-10-25 16:04:15下载
- 积分：1
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cameraCali
张正友标定法,标定图像，将图像进行校正，是当今用的最多的方式方法(This method is so good, I have transferred through this. And it is very useful for the IT workers. This is my first code. Thank you every one.)
- 2015-05-03 23:45:36下载
- 积分：1
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new_SPIHT
最新的用matlab实现的ＳＰＩＨＴ算法，实现对图像的高性能压缩。(Matlab using the latest achievement of SPIHT, the realization of high-performance image compression.)
- 2007-06-21 16:27:52下载
- 积分：1
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chapter9
说明： 《数字图像处理与机器视觉:Visual C++与Matlab实现》5
图像分割,霍夫变换,Hough变换直线检测的Matlab实现(" Digital image processing and machine vision: Visual C++ and Matlab to achieve" 5 image segmentation, Hough transform, Hough transform line detection of the Matlab implementation)
- 2010-04-22 09:15:40下载
- 积分：1
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image-mosaic-using-SIFT
Image Mosaicing interesting application in computer vision
- 2012-11-30 00:53:20下载
- 积分：1
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KLT-Tracking-algorithm
KLT跟踪算法，附有程序，并附有两个例子，可以完美运行(KLT tracking algorithm, with the program, along with two examples of the perfect run)
- 2020-12-05 01:19:24下载
- 积分：1
