DSP CMOS图像传感器OV7620在点钞机人民币号码识别记录系统中的应用.pdf

第 29 卷 　第 4 期 电 子 器 件 Vol . 29 　N o . 4 2006 年 12 月 　　　 Chinese J our nal Of Elect r on Devices 　　 Dec . 2006 Appl ication of CMOS Digital Camera OV7620 in RMB Number Recognition and Recordation System of CashCounting Machine Y UA N Weiqi , TA N G Yongh ua ( ) Comp uter Vis ion Group , S heny ang Uni vers ity of Technol ogy , S heny ang 110023 , Chi na Abstract :The digit al camera OV 7620 i s app lied to co mp let e t he online collection of number image . The SC CB (t he OmniVi sion Serial Camera Co nt rol Bu s) i s simulat ed t hro ugh t he H P I ( Ho stPort Int erf ace) of D SP (Digit al Signal Proce ssor s) ,in or der to initialize t he OV7620 ;D SP cont rol s t he digit al image dat a to be stored in t he sp ecifically location direct ly aft er t he initialization re sult s f ro m t he multip ower supp ly of t he sy st em . Nowaday s ,OV7620 can supp ly t he legible ,int egrat ed number image dat a ,w hich i s 200 40 ,for sy st em at 30 f rame s p er second . For t he rat e of ca shcountin g machine i s 15 ～20 f rame s p er secon d , OV 7620 can gat her t he RMB number image online ,w hile t he ca shcounting machine i s wor king nor mally . Key words :OV7620 ;D SP : SCCB ;Ca shco unting machine ;N umber reco gnition EEACC :7230 G CMOS 图像传感器 OV7620 在点钞机人民币号码识别记录系统中的应用 苑玮琦 ,汤永华 (沈阳工业大学视觉检测研究所 ,沈阳 10023) 摘 　要 :在点钞机人民币号码识别记录系统中应用图像传感器 OV7620 实现号码图像的在线采集 。通过 D SP (数字信号处 ) ( ) ( ) 理器 的 H PI 主机接口 编