图形学_基本图形

purpose simulates embedding and detection of watermark in random noise using QIM (quantization index modulation), uses non-linear scaling compile gcc -g -o nlqim nlqim.c -lm -purpose simulates embedding and detectio n of watermark in random noise using QIM (quanti index modulation. 5), uses non-linear scaling compile gcc-g-o nlqim nlqim.c- lm

这是我参考了n(n>=5,^_^)篇BP神经网优化方法的论文写出的BP神经网源代码，使用了批处理训练方法，带动量项、学习速率的自适应调整、仅对学习精度没有达到指定要求的模式训练，并且训练精度逐步加大，通过这种方法，极大地加快了训练速度；另外，对于0模式和1模式数目相差很大(5-6倍)都能达到很高的学习精度。-This is my reference to the n (NGT; Chapter 5 = ,^_^) BP neural network optimization method to write the thesis of BP neural network source code, use the batch method of training, the volume driven, adaptive learning rate adjustment, not only learning accuracy requirements specified the model training, and training gradually increased accuracy, this method has greatly accelerated the pace of training; In addition, the 0 mode and a model number vary greatly (5-6 times) to achieve high accuracy of the study.

图像的点运算主要用来改变图像的灰度分布范围；点运算的最大特点是输出像素值只与当前输入像素值有关，本文主要介绍利用灰度直方图查看图像信息，了解各种灰度变换公式，掌握灰度变化实现方法。

The PhoXo Core Library (PCL) 是一套强大的跨平台图像处理库。它的主要特性包括 :* 平台无关代码* 任意区域选取* 几十种图像特效* Undo/Redo支持* 多图层* 进度显示* 直方图* 图像文件读写* 文字渲染 (目前使用WIN32-GDI+, 以后会采用FreeType替代)-The Core Library (PCL) is a powerful, cross-platform image processing library. Its main features include : platform-independent code*** arbitrary selection of regional dozens of image effects* Undo/Redo support multi-layer*** histogram shows progress** Image File read and write text rendering (using WIN32- GDI, will be adopted after the FreeType alternative)

一个小型的画图工具，可绘制多种图形和文本并可以保存为文件，支持Undo/Redo功能- A small painting tool, may draw up the many kinds of graphs and the text and may preserve is a document, supports the Undo/Redo function

一个五层楼的电梯模拟程序，用C语言实现，只能在TC2.0里面运行-floor of a five-story elevator simulation program with C language, which can only be run in the TC

用于高质量图片旋转-rotation for the high-quality images

是关于CA开发的一份不错的资料,值得初学者学习和参考-CA developed on a good information, it is worth learning and reference for beginners

其中实现了许多功能，很全的。-which achieved a number of functions, is the whole.

利用AABB算法对两个物体进行碰撞检测，物体采用三角面片表示，算法输入两个物体碰撞的三角面片对及碰撞检测时间等信息。AABB algorithm is used to analyse the two objects, collision detection, object using triangles, said algorithm triangles in the input of the collision of two objects and collision detection time and other information.