基于Cortex-A53的嵌入式图像采集系统设计

Design of embedded image-capturing system based on Cortex-A53

为实现具有集成本地图像处理功能的嵌入式图像采集系统,采用嵌入式Linux,选用Cortex-A53架构的处理器S5P6818和具有M IPI接口的OV5645 CM OS图像传感器,设计了系统的硬件连接电路,研究了在Linux下基于V4L2的摄像头的驱动框架并实现了OV5645的设备驱动,编写嵌入式Linux应用程序进行实验验证。成功调用V4L2的API实现图像抓取和处理,完整实现了嵌入式图像采集系统的软硬件设计。

In order to achieve the embedded image-capturing system with local image processing function,the paper uses the embedded Linux,chooses the processor S5P6818 of Cortex-A53 architecture and the OV5645 CMOS image sensor with MIPI interface to design the hardware connection circuit of the system.After that,the driving frame of the camera based on V4L2 in Linux is studied,the device driver of OV5645 is realized,the embedded Linux application program is written for experimental verification.Therefore,the paper successfully invokes application programming interface of V4L2 to implement image grabbing and processing,and fully implement the software and hardware design of the image-capturing system under Linux.