摘要
通过对线阵电荷耦合器件(CCD)的时序及输出信号的分析,以TCD1707D为例介绍了一种实用的CCD驱动和信号输出处理电路。复杂可编程逻辑器件(CPLD)和控制外端结合,可以调节CCD驱动频率;采用直流处理、滤波放大、相关双采样等手段可降低CCD信号输出混杂的各种噪声和干扰;利用外控开关与可调电阻结合,可使得处理电路能与不同的驱动频率相匹配,得到更好的信号质量。电路结构简单,调试方便,可配合多种用户使用。
This article deeply studies genetic algorithm and its application on matching for fingerprint identification. The problem that the traditional genetic algorithm may fall into local optimization leads prematurely convergence. In order to solve the problem, this article improve the genetic algorithm include coding, selecting, crossing, variation to adapt to application for fingerprint identification. This article simulates the algorithm on MATLAB platform. The experiment results show that the effect is good.
出处
《科技促进发展》
2011年第S1期130-132,共3页
Science & Technology for Development
关键词
线阵CCD
时序驱动
信号输出
处理电路
fingerprint identification
genetic algorithm
feature point matching
