Abstract: This paper proposes a solution using embedded system to provide navigation for the blind or visually impaired persons. Integrating with the high performance fix-point DSP ADSP-BF533 and video codec SAA7113, a hardware platform using as image processing is designed while recognition algorithms implemented on ported embedded operation system and optimizing methods are given. Results of experiment suggest that this system has good real-time property and recognition accuracy, which can serve the blind’s need for walking outdoors independently.

Key words: blind aid system, Diyital Signal Processor(DSP), image recognition, μClinux OS

摘要： 提出一种为盲人或视弱人群提供导航的基于盲道识别的嵌入式系统的设计方案。结合高性能定点DSP ADSP-BF533 和视频解码芯片SAA7113，设计图像处理硬件平台，移植嵌入式操作系统并给出算法实现与优化方法。实验结果表明，该系统在自然盲道情况下达到必需的处理实时性和判断的准确性要求，可较好地服务于盲人的独立出行。

关键词: 导盲系统, 数字信号处理器, 图像识别, μClinux操作系统

CLC Number: 

• TP316