TI杯电子设计大赛项目总结报告.doc

华中科技大学电子与信息工程系 2012年TI杯电子设计大赛项目总结报告 项目名称： 基于C5409 DSP的笔迹识别系统 团队成员： 通信0901班 李涛（组长） 通信0901 班 郭强 通信0901 班 贺睿 指导教师: 汪小燕 2012 年 7 月 日  课题名称：【摘要】 本次比赛以实验箱和【关键词】：Abstract This project is based on the Digital Signal Processor experiment suit designed by Huazhong Univ. of Sci. Tec., TMS320C5409 DSP System board and touch-screen LCD. Firstly, the correct chirography characteristics information is acquired and saved. Then, the user inputs handwriting through a UI to compare with the one which has been saved. At last, the processor outputs the compared result according to the special software arithmetic, thus completing the progress of user identification. In fact, the chirography inputted by the user is consisted of a series of continuous coordinate. The information of each dot is collected by the touch screen, then sent into the DSP, and displayed at the same place on the LCD. The input data will be processed by methods related to the situation when the user finish inputting, then the results or hints will be shown on the LCD. All the progresses are controlled by keys in the experiment suit, and a brief UI is served to guide the user effectively. Specifically, we display the guidance information by painting the interface directly, acquire the continuous handwriting information vectors by inquiring the status information returned from the touch-screen, analysis the vectors with the DSP processor according to the density distribution feature arithmetic. Consequently, we can calculate the similarity between the vector and the standard vector. After comparing the similarity with the threshold， we draw the conclusion by judging whether the error is between the allowed ranges. After running several tests, we find that the correct ratio of the system may reach a maximum of 70 to 80 percent when the inp