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In many areas of commerce, government, academia, and hospitals, large collections of digital images are being created. Many of these collections are the product of digitizing existing collections of analogue photographs, diagrams, drawings, paintings, and prints. Usually, the only way of searching these collections was by keyword indexing, or simply by browsing. Digital images databases however, open the way to content-based searching. In this paper we survey some technical aspects of current content-based image retrieval systems.

一本关于粒子滤波的书，讲得浅显易懂，希望对大家有用~~~(particle filter tourist)

这是csapp的源代码!里面代码经测试都可以运行！希望对大家有所帮助！(This is csapp source code! Inside the code can be run by the test! I want to help!)

正在从事科学计算的朋友学习fortran必备的书籍，除了书籍之外，还有原书的例程，好不容易在网上淘到的(Are engaged in scientific computing friends learning fortran necessary books, except books, there is the original book routine, hard-line to Amoy)

机器人标定,基于POE公式的机器人几何参数标定(Robot calibration, calibration of robot geometric parameters based on POE formula)

北大群论讲义，作为老师讲的讲义，还算通俗易懂。(North group theory lectures, as teacher handouts, fairly easy to understand.)

《神奇的perl》经典的入门的书籍，值得推荐(The magic of the classic Perl entry books, it is recommended)

说明：  ansys Maxwell 官方 培训 教程。 里面有例子和对应的文件。(ANSYS Maxwell Official Training Course. There are examples and corresponding documents.)

说明：  PFLD的python实现，用于人脸的关键点检测(Python implementation of PFLD for key point detection of human face)

ansys命令流进行谐响应分析的一个实例(ANSYS Parametric Design Language)