基于ARM9的嵌入式手持瞳孔测量仪设计

摘要

A kind of embedded Linux hand-held pupilometer based on ARM9 architecture is discussed in this paper. The programmed algorithm is calculated by S3C2440A chip,with which frame image of dynamic video is collected through camera and human-computer interaction is established at Qt/Embedded graphical user interface(GUI)system. Canny operator is selected for the programmed algorithm to detect the edge of eye gray image. The pupil detection is implemented by means of Hough trans-form. The experiment result indicates that the algorithm achieves the expected effect in pupil detection with high precision and low noise.%研究一种基于ARM9架构的嵌入式Linux手持瞳孔测量仪.采用S3C2440A芯片进行程序算法计算,经由摄像头对动态视频的帧图像采集,由QT/Embedded图形界面系统建立人机交互.程序算法选用Canny算子对眼部灰度图像进行边缘检测,利用Hough变换实现瞳孔检测.实验表明,其算法精度高、噪声小、针对瞳孔测量达到了预期的实验效果.