集成电路与嵌入式系统2025，Vol.25Issue(4)：47-53,7.DOI:10.20193/j.ices2097-4191.2024.0088
基于RISC-V扩展指令的车牌识别协处理器设计
Design of license plate recognition co-processor based on RISC-V extended instructions
摘要
Abstract
With the development of intelligent transportation systems,license plate recognition systems have transitioned from traditional PC platforms to portable embedded terminals,thereby imposing higher demands on the accuracy,speed,and security of existing license plate recognition systems.RISC-V is an instruction set architecture characterized by being open-source,streamlined,efficient,low-power,and modular,offering a high degree of flexibility.In this paper,a license plate recognition system based on the Hummingbird E203 RISC-V processor is designed,utilizing an improved eight-direction Sobel operator for high-precision edge detection.The system is implemented on the Da Vinci PRO development board.The experimental results show that the system has a recognition accuracy rate of 96％,with an average recognition time of around 45 ms.It demonstrates high recognition accuracy and real-time performance.Com-pared to traditional license plate recognition systems,this system offers better performance.关键词
蜂鸟E203/RISC-V/车牌识别/边缘检测/FPGAKey words
Hummingbird E203/RISC-V/license plate recognition/edge detection/FPGA分类
电子信息工程引用本文复制引用
赵晨旭,曲英杰,王海婷..基于RISC-V扩展指令的车牌识别协处理器设计[J].集成电路与嵌入式系统,2025,25(4):47-53,7.基金项目
国家自然科学基金青年项目—基于光刻有机场效应晶体管构筑高集成类皮肤人工触觉神经系统(62204136). （62204136）
