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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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finetune_alexnet_with_tensorflow-master
用以图像分类,可以设计自己的数据集训练模型(For image classification, you can design your own data set training model)
- 2017-11-13 10:05:19下载
- 积分:1
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pftest
基于AR2模型的粒子滤波源代码,可用于图像处理,视觉跟踪,希望可以帮助有需要的人(AR2 model particle filter based on source code can be used for image processing, visual tracking, I hope to help people in need)
- 2010-03-09 10:07:21下载
- 积分:1
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数字图像处理用到的标准测试图像 typical
数字图像处理用到的标准测试图像,很多图片。(IMP test images。)
- 2013-10-24 22:18:01下载
- 积分:1
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Doc1
antenna dipole of 3d antenna
- 2012-04-10 23:57:55下载
- 积分:1
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laba
说明: horn天线的仿真模型及结果 可以进行进一步的 实验设计 以及应用到其他场景的喇叭模型(Simulation model and results of horn antenna)
- 2020-06-23 00:40:02下载
- 积分:1
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TMS320DM642_DSP
基于CCS开发平台,关于IT公司的TMS320DM642的开发实例(包括,串口、UART接口、图像灰度显示、图像阈值分割,高斯平滑)等(the program example based on CSS of IT MS320DM642 include GPIO UART Gaussscale Grayscale Threshold)
- 2011-07-25 09:25:45下载
- 积分:1
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scd
根据MPEG7中图像的SCD描述算子,提取图像在HSV空间中的直方图。并且可以与源图像进行比较。(MPEG 7 Scalable Color Descriptor experiment)
- 2010-05-17 22:03:45下载
- 积分:1
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matlab-basic-insar
源程序为MATLAB代码,主要功能是对干涉SAR数据的基本处理。(The source code for the MATLAB code, the main function is to interferometric SAR data processing.)
- 2020-12-06 22:49:21下载
- 积分:1
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《实用数字图像处理与分析(2版)》源代码
《实用图像处理与分析》源代码是一套完全可执行的VC 界面源代码,界面内容除了图像的表示、读入、保存、彩色变灰度以外,还包括图像的2值化处理、微分变换、几何变换、彩色变换、参数测量、傅里叶变换、小波变换、Hough变换、模式识别、神经网络、遗传算法、图像压缩等功能,提供有近100个图像处理与分析函数的源代码,可用于图像处理的教学和科研。
- 2020-04-27下载
- 积分:1