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SVM_HOG.xml里只有一个支撑向量？ #7

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Fridaycoder opened this issue Aug 24, 2019 · 2 comments
Open

SVM_HOG.xml里只有一个支撑向量？ #7

Fridaycoder opened this issue Aug 24, 2019 · 2 comments

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@Fridaycoder
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你好！谢谢您开源了这部分代码，但是我最近碰到了一个很困惑的问题，就是我训练出来的.xml文件中支撑向量的个数只有1个，不管如何调整参数和训练样本的个数，都是一个，看到您上传的SVM_HOG.xml文件里也只有一个支撑向量，所以想问下这个是正常的吗？因为直接拿这个文件去检测行人效果非常不好，所以觉得是这里有问题，希望可以得到您的回复，再次感谢！
@icsfy
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icsfy commented Aug 24, 2019

就是一个啊

@Chenhongchang
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对于线性SVM，svm.train函数中封装了void CvSVM::optimize_linear_svm()函数，使得多个支持向量整合为一个，这只是形式上的变化，详见svm.train()函数源码

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@icsfy @Fridaycoder @Chenhongchang