SURF算法论文及实现源码

xiaoming031

我不是大侠，也灭有研究过surf。

我觉得人家免费贴在网上的东西，大部分还是可以用的。

我认为sigma就是点的意思。

[quote="scopus":1rfyk74x]看样子包括大侠你，不少人研究过surf了，为啥我的问题都没人回复。害我白费了两天去研究一个不可能出正常运行的代码。
还有下面的sigma是山意思？
谢谢

surf最主要的东西iJuliet在本楼里都说了吧

SURF中描述符的生成，将20sigma*20sigma划分成4*4的subregion（即5sigma*5sigma），对其中25个点做哈尔小波变换，以求得sum(dx) sum(dy) sum(|dx|) sum(|dy|)，这样4*4*4=64维来描述一个特征点。

[/quote:1rfyk74x][/quote][/quote]


sigma在SIFT里是高斯滤波的参数.surf应该是方框滤波模板大小对应的参数。

mingfengwuye

谢谢分享，学习一下

lyminivy

学习~~

lh2078

值得关注，顶一个！！！

zhhao31

赞一下。。感谢LZ。

volkswageos

opencv有没有实现surf的算法啊，你给的那个文件没有没有工程文件啊？怎么使用啊？
有没有可以直接运行的surf算法程序啊？

volkswageos

好像你这个就是SURF-V1.0.9-WinDLLVC8
里面的源码吧，我想知道这个程序怎么使用啊？

ME3425

请问楼主能否传一份window下可以直接运行的SURF特征检测代码，谢谢^^
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bijianxia

好好研读一下英文论文，十分感谢分享
不知道有没有好的中文论文可以读一下，觉得还是母语的理解起来比较容易

bijianxia

When constructing larger filters, there are a number of factors which must be take into
consideration. The increase in size is restricted by the length of the positive and negative
lobes of the underlying second order Gaussian derivatives. In the approximated filters
the lobe size is set at one third the side length of the filter and refers to the shorter side
length of the weighted black and white regions. Since we require the presence of a central
pixel, the dimensions must be increased equally around this location and hence the lobe
size can increase by a minimum of 2. Since there are three lobes in each filter which must
be the same size, the smallest step size between consecutive filters is 6. For the Dxx and
Dyy filters the longer side length of the weighted regions increases by 2 on each side to
preserve structure. Figure 4 illustrates the structure of the filters as they increase in size.

说的意思似懂非懂，是不是我英语太差了