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基于V4L2嵌入式图像采集的实现 毕业论文外文翻译
外文原文The Implementation of Embedded Image Acquisition Based on V4L2 LU Yinli,YUHongli,ZHANGPengpengPhysical Electronics,Department of Electrical Engineering of University of South China Hengyang,People’s Republic of China luyinli198755@163.com,tianqing924@163.com AbstractIn view of the current situation of the less embedded Linux image acquisition application based on V4L2(Video for Linux Two), embedded image acquisition system based on V4L2 is designed.S3C6410 is adopted as hardware development platform and Linux as software platform. After loading the driver of CMOS camera OV9650 and other relative drivers, image acquisition applications on the basis of V4L2 is compiled, adopting double frame buffer to reduce CPU utilization rate to accomplish acquisition and preview image. With the size of 400×480 and the frame rate of 15 frames per second, the picture collected shows clearly and it has good quality. The experiment result indicates that the system has good scalability, and it offers a new idea for embedded hand-held devices. Keywords-V4L2; OV9650; image acquisition; S3C6410; double frame buffer INTRODUCTION The video image processing technology is widely used in electronic technology and computer technology. The image from a camera or other image acquisition equipments is transformed mathematically to get the information of digital image; then, it is encoded, filtered, enhanced, recovered, compressed, stored and other processes conducted by the computer; visual images and other results finally will be received. With the development of embedded technology, the current image acquisition technology is transformed from the analogue to the digital. Among them, embedded image acquisition attracts more and more peoples attention for its superior performance.Embedded microprocessor is the best choice for the image processing system because of its high performance, cost-effective, and low power. Samsung S3C6410 has ARM11 core and adopts 64/32 bit internal bus architecture
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