A simple drawing program to achieve class inheritance. Can draw a straight line,...

一个VB制作的立体屏幕保护程序 里面有说明文字 -VB produced a three-dimensional screen saver contains descriptions

判断一个点是否在一个区域内-judge whether a point is in a region

采用vc++编程，可以处理8位bmp图像。先进行阈值分割，然后可以轮廓提取。最后可以进行平行线检测，采用hough变换-using vc programming, can handle eight bmp images. First threshold for segmentation, which can then be extracted contour. Finally parallel line can be detected using Hough Transform

分享一个CAD VBA代码，将CAD视口分为四个视口-Share a CAD VBA code, CAD, as I will be divided into four, as I! !

简单利用立体几何实现的视图游览公告板深度遮挡问题.-Simple to use three-dimensional geometric realization of the view tour Bulletin Board depth occlusion.

用c++语言实现一个方块图像的旋转-the round of the picture

该源码用于图像处理算法初学者，这是系列之4-This source code is the series 4 for the beginner of image processing arithmetic.

这个是3D游戏编程 杨青著 书中的源码 很多朋友都找不到它 我把它放上来 -This is a 3D game programming Yang Qing with the source book many friends I have not found it it Fangshanglai

对于一些图像来说，常用的边缘检测算法有时候无法设立合适的阈值将它们的梯度较小的模糊边缘检测出来。为了解决这个问题，有两种解决方法：将图像方差标准化，拉大模糊边缘的梯度值，或通过设置sigmoid函数，将像素所在区域的信息传递到梯度值中去，对其进行调整，就能找到合适阈值，有效地将模糊边缘提取出来。本程序把这两种算法实现并与与传统算法进行了比较。-For some images, the commonly used edge detection algorithm sometimes can not be an appropriate threshold for the gradient of their smaller fuzzy edge detected. To solve this problem, there are two solutions: the image variance standardization, widening the fuzzy edge of the gradient value, or by setting the sigmoid function pixel region to disseminate the message to the gradient values to adjust, on the can find a suitable threshold, effectively extracted fuzzy edge. This procedure of these two algorithms with the traditional algorithm.

下面是使用RSA算法使用大整数对字符串执行加密和解密的java源代码。公钥和私钥将仅通过代码随机生成，并且还取决于代码中指定的位长度。