和前台的交互
Spring MVC和前台的交互有两种：
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BHoG binary descriptor for sketch-based image retrieval
整理论文重点
1 Hog实现过程
$ HOG $ 特征提取方法就是将一个 $image$（你要检测的目标或者扫描窗口）：
灰度化（将图像看做一个 $x,y,z$（灰度）的三维图像）；
采用 Gamma 校正法对输入图像进行颜色空间的标准化（归一化）；目的是调节图像的对比度，降低图像局部的阴影和光照变化所造成的影响，同时可以抑制噪音的干扰；
）计算图像每个像素的梯度（包括大小和方向）；主要是为了捕获轮廓信息，同时进一步弱化光照的干扰。
）将图像划分成小 cells（例如 $6*6$ 像素/cell）；
）统计每个cell的梯度直方图（不同梯度的个数），即可形成每个cell的descriptor；
）将每几个cell组成一个block（例如 $3*3$个cell/block），一个block内所有cell的特征descriptor串联起来便得到该block的HOG 特征 descriptor。
）将图像 image 内的所有 block 的 HOG 特征 descriptor 串联起来就可以得到该 image（你要检测的目标）的HOG特征descriptor了。这个就是最终的可供分类使用的特征向量了。
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Flake it till you make it
Excerpt from Soulshaping by Jeff Brown
Under what circumstances should we step off a path? When is it essential that we finish what we start? If I bought a bag of peanuts and had an allergic reaction, no one would fault me if I threw it out. If I ended a relationship with a woman who...
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Test markdown
Each post also has a subtitle
You can write regular markdown here and Jekyll will automatically convert it to a nice webpage. I strongly encourage you to take 5 minutes to learn how to write in markdown - it’ll teach you how to transform regular text into bold/italics/headings/tables/etc.
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To be
... or not to be?
To be, or not to be–that is the question: Whether ‘tis nobler in the mind to suffer The slings and arrows of outrageous fortune Or to take arms against a sea of troubles And by opposing end them. To die, to sleep– No more–and by a sleep to say we...
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