C thinning algorithm

sift算法的一个演示程序 朋友们可以-sift algorithm a demo program can look at the friends

MPCA一个博士编写的多线程pca变换方法，内含发表论文-Dr. MPCA prepared a multi-threaded PCA transform methods, including papers

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VB绘制正弦线，用VB实现在图片框中绘制坐标轴，并在坐标系内动态生成正弦线。注释：首先清除picture1内的图形，设置绘线宽度，绘坐标系的X轴及箭头线，绘坐标系的Y轴及箭头线，指定位置显示原点O，重设绘线宽度，用For循环绘点，使其按正弦规律变化。步长值很小，使其形成动画效果，指定位置显示描述文字

qu yu tian chong zhe ge dongxi hen shuang jingbenren shiyan-my name is zhangheng!! zhe ge dongxi hen shuang jingbenren shiyan!!

计算机图形学 用BRESEHAM方法制作直线的课程设计报告，内容有源码，调试过程，截图，有文档，希望大家下载-Computer graphics methods used BRESEHAM straight report of the curriculum design, content source and debugging process, screenshot, there are documents, I hope you download

最基础、最简单的GUI，可在资源极少的8位51单片机到运行，同样也可以在32位ARM上运行。运行速度非常快。做简单界面的最佳选择。还可以各种尺寸显示屏和各种颜色的显示屏。

一个简单的单文档画图示例，是我大二时的练笔之作。提供绘制直线、圆、矩形的基本图元的功能。-a simple single document drawing example, I was pursuing the masked one. Drawing for a round, rectangular map yuan"s basic functions.

OTSU方法计算图像二值化的自适应阈值，OTSU 算法可以说是自适应计算单阈值（用来转换灰度图像为二值图像）的简单高效方法。下面的代码最早由 Ryan Dibble提供，此后经过多人Joerg.Schulenburg, R.Z.Liu 等修改，补正。算法对输入的灰度图像的直方图进行分析，将直方图分成两个部分，使得两部分之间的距离最大。划分点就是求得的阈值。都是老外写的，经典哦。-OTSU images calculated value of the two adaptive threshold, OTSU algorithm can be calculated adaptive threshold (for conversion to gray scale images binary images), a simple and efficient manner. The following code from the earliest to provide Ryan Dibble, after a more than Joerg.Schulenburg, R. Z. Liu amend the correction. Algorithm for the importation of gray-scale image histogram analysis of histogram is divided into two parts, Part 2 makes the distance between the largest. Demarcation point out the threshold. Foreigners are written in the classical oh.

三次非均匀B样条曲线,根据已知点画出一次,二次,三次的B样条曲线-three non-uniform B-spline curves, according to a known point draw, second, third B-spline curves