Calibration

线性反投影算法（Linear Back Projection，简称 LBP）又称累加法，是最早使用的一种简单（ECT图像重建）成像算法。它将通过某点的所有投影射线进行累加，再反向估算出该点的密度值。从成像观点分析，它是不完全的雷登逆变换（完整的雷登逆变换包括微分、希尔伯特变换、反投影和归一化等步骤）。(Linear back projection algorithm (Linear Back Projection, referred LBP), also known as cumulative method, is the first to use a simple (ECT image reconstruction) imaging algorithms. It accumulates all projection rays through a point, then reverse the estimated density value of the point. From the image point of view analysis, it is not exactly the inverse transform Leiden (Leyden complete inverse transformation involving differential Hilbert transform backprojection and normalization steps, etc.).)

主成分分析的三种方法，一种是自编程序，一种是princomp函数,一种是pcacov函数(Three principal component analysis, one is self-programming, one is princomp function, a function is pcacov)

中心画圆 使用vc6.0实现 多多指教(draw a Circle use vc6.0)

快速ＤＣＴ变换的代码.利用c++实现DCT变换.(Fast DCT transform code. Use c++ to achieve DCT transform.)

简单起见，这里设定阈值为122，即最大灰度的一半(the sake of simplicity, this threshold value is set to 122, the largest gray half)

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 ~)

说明：  Simple Thumbnail Viewer PRINT

猜首府 反复提示用户输入一个州的首府，并检测是否正确(Guess the capital repeatedly prompts the user for the capital of a state, and to detect the correct)

三维模型的网格简化算法，通过删除边来减少面片个数，同时保留图形特征(Three-dimensional model of the mesh simplification algorithm to reduce the number of patches by removing the side, while retaining graphic features)

说明：  这是一个用VC++写的用于数控编程的系统,内含仿真器和说明书,请不要用于商业行为。(This is a VC was made for NC programming system includes simulators and brochures, please do not for commercial activities.)