DrawCircle

本代码主要关于摄影测量中的单向空间后方交会(resection of photogrammetry)

本程序是一幅512*512的lena.raw图像进行快速DCT和其逆变换，整个程序均调试通过，是在C语言环境下编写的，在整个关于快速DCT的源码中，本代码可以说是集大成者，很值得一看。(This procedure is mainly of a float or double type of data, rounding, the float data can be positive or negative, can be, take the whole principle of rounding.)

介绍四叉树基于视点LOD算法简化地形的图形编程资料，很有实用性，还带有其它效果的算法(Introduced Quadtree LOD algorithm based on the simplified view of the graphical programming information terrain is very practical, but also with other effects of the algorithm)

视频水印嵌入算法源程序（VC实现，对话框界面），对于做视频水印的同志可在此基础上进行自己的创新工作。(video watermarking algorithm source code (VC, the dialog interface), for doing video watermarking comrades in this on the basis of their innovation.)

这款小DEMO是关于自己学习LOD地形分层算法的例子，其中简单显示了实现算法的过程(The DEMO is a small study on their own examples of LOD terrain hierarchical algorithm, which simply shows the process of algorithm)

扫描线Zbuffer算法 1。算出模型的包围盒。 2．每条扫描线打点时并不是包围盒内整条线打点，而是先搜索需要刷新的范围， 只是该范围内打点。 (One scan line Zbuffer algorithm. Calculate the model bounding box. 2. Each scan line runs inside the box when not surrounded by the entire line runs, but first need to refresh the scope of the search, but the scope of RBI.)

计算机图形学的多边形求交算法，实现两个多边形的求交功能(Computer graphics polygon intersection algorithm to achieve two polygon intersection function)

基于混沌置乱的DCT域灰度级盲水印算法 需要的可以看下~(Based on Chaotic Scrambling DCT-domain blind watermarking algorithm for gray-level needs can facie ~)

光栅图形学中的扫描填充算法。list<Line> AET和list<Line>* NET构成了活性边表和新边表.算法先初始化各扫描线新边表,之后对于每条扫描线更新活性边表，并且配对交点来着色。 (Raster graphics scanning fill algorithm. list <Line> AET list <Line>* NET constitute the active side of the table and side table new algorithm to initialize each scan line side table new, after each scan line update the active side of the table, and the the paired intersection of coloring.)

对三维图像进行配准，输入为RAW文件，输出为RAW+mha文件(3D image registration, input as RAW file, output as RAW mha file)