Paper Currency Number Recognition System Based on ARM
LU Wu-yi · Computing Technology and Automation · 2010
In view of the increasing demand of recognition system for paper currency,A sort of image acquisition system of paper's number with CIS(Contact Image Sensor) based on ARM and FPGA is introduced.A real-time approach is brought out to collecting high-speed image information and image pretreatment.This system is mainly designed of hardware,the collected CIS image signal is saved in the SRAM(synchronous random access memory) through pretreatment of occulting output compensation,secondary filter,analog digital converter and binaryzation,getting ready for further image processing by ARM.The driving signal in CIS is designed by FPGA.The system runs stably and accurately,real-time performance is good,high integration,and the collected image shows clearly.the system runs with highly exact rate on number recognition.