1、 了解系統調用pipe()的功能和實際原理
2、 編寫一段程序，使用管道實現父子進程之間的通信
a) 使用系統調用fork()創建一個子進程
b) 子進程調用函數write()向父進程發送自己的進程ID和字符串” s sending a message to parent.\n”。
c) 父進程調用函數read()通過管道讀出子進程發來的消息，將消息輸出屏幕，然后終止
This book is the most accurate and up-to-date source of information the STL currently available. ... It has an approach and appeal of its own: it explains techniques for building data structures and algorithms on top of the STL, and in this way appreciates the STL for what it is - a framework. Angelika Langer, Independent Consultant and C++ Report Columnist "A superbly authored treatment of the STL......an excellent book which belongs in any serious C++ developer s library." Jim Armstrong, President 2112 F/X, Texas. \n
The C++ Standard Template Library (STL) represents a breakthrough in C++ programming techniques. With it, software developers can achieve vast improvements in the reliability of their software, and increase their own productivity.
Yacc說明及使用文檔
yacc(Yet Another Compiler Compiler)，是Unix/Linux上一個用來生成編譯器的編譯器（編譯器代碼生成器）。yacc生成的編譯器主要是用C語言寫成的語法解析器（Parser），需要與詞法解析器Lex一起使用，再把兩部份產生出來的C程序一併編譯。yacc本來只在Unix系統上才有，但現時已普遍移植往Windows及其他平臺。
我用matlab寫的一個corner detector, 效果比現在流行的harris，susan，CSS等效果要好。
Algorithm is derived from:
X.C. He and N.H.C. Yung, Curvature Scale Space Corner Detector with Adaptive Threshold and Dynamic Region of Support , Proceedings of the 17th International Conference on Pattern Recognition, 2:791-794, August 2004.
Improved algorithm has been included in A Corner Detector based on Global and Local Curvature Properties and submitted to Optical Engineering.
