摘要
提出了一种基于图像的智能门控系统,成功改善了传统智能门控系统控制范围小、灵敏度低的缺点。系统采用FPGA+ARM双控制器的硬件结构,实现了系统的小型化和实时性。FPGA控制摄像头采集图像数据,并进行灰度预处理,通过2片SRAM乒乓操作实时缓存图像数据,采用总线的方式与ARM嵌入式系统进行通信,并通过移植OpenCV实现图像门控算法。实验结果表明该系统的准确率达到96%。
An intelligent door control system based on the image technology is proposed and implemented. Therefore, the shortcomings of the small range, low sensitivity of the traditional intelligent door control system are successfully improved. The system of miniaturization and real-time is realized by the hardware structure of double controller （ FPGA ＋ ARM）. The image data is collected by a camera which is controlled by FPGA. And at the same time the grayscale is pretreated. Image data is cached in real time by two SRAM ping-pong operations. Using the bus and ARM embedded system to communicate and the image door control algorithm is achieved by transplanting OpenCV. Experimental results show that the accuracy rate is up to 96%.
出处
《电视技术》
北大核心
2012年第17期156-158,共3页
Video Engineering
