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构建一个web服务器 最近几天我根据一些参考书和网上的开源程序写了一个简单的HTTP服务器 链接，这个HTTP服务器尽量用简单的代码完成一个服务器基本的功能，比如分析请求行，分析请求头，并且根据不同的请求方法给出响应。网上的开源程序很多，但是有的定义了很多自定义的结构体，有的作为c语言结构的程序，参 阅读全文
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Overview This week we mainly talked about two parts. The difference between the fundamental matrix and the essential matrix. Using correspondences to 阅读全文
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Knowing and Thinking We can find the corresponding translation and rotation according to decomposation the essential matrix which is defined as \( E = 阅读全文
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Knowledge and Thinking Bild Urbild and Cobild One line or point will be projected into the image \(\mathbb{R}^3 \Rightarrow \mathbb{R}^2\), through th 阅读全文
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Knowledge and Thinking Homogenous coordinates We can use a function \( ax+by+c = 0 \) to describe a line and \((x,y)\) is a point in the line. so the 阅读全文
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Week 2 3.5.2020 Overview This week, we have mainly learned two parts: 1. How to match the same feature points in two images from different viewpoints. 阅读全文
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function features = harris_detector(input_image, varargin) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %input parameters: %input_image graysca 阅读全文
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概述 无论是在图像处理领域还是数据领域，KL变换或者称PCA都是一种很重要的手段，通过这种方法，我们能把降低数据的维度，保留最重要的信息，从而达到压缩或者减轻数据处理的复杂度。这篇文章主要从图像的角度来解释一下什么是KL变换。首先需要了解一下KL变换的背景知识，block transform Blo 阅读全文
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Knowledge and thinking Formats of images There are two different formats for saving an image: continuous and discrete images. The continuous image is 阅读全文