摘要
采用"DSP+FPGA+MCU"的方案,设计了一种基于80万像素彩色CCD芯片组的新型高分辨率摄像机。CCD采集的模拟图像信号经A/D转换后送给DSP和FPGA进行处理,FPGA完成视频格式的转换和帧率提升后输出XGA分辨率的图像,并实现了一种自动聚焦算法,MCU则根据FPGA聚焦信息和DSP光圈信息,结合一定的策略控制光学镜头中的步进电机从而实现自动聚焦和自动光圈。该摄像机具有输出分辨率高,图像质量好,功能利于扩展等特点,并广泛应用于教育及商用领域的视频展示台中。
A scheme of ＂ DSP＋FPGA＋MCU＂ is adopted to design a new high resolution camera based on 800K pixels color CCD chipset. Image signal collected by CCD is converted through A/D, and then is sent to DSP and FPGA for processing. After accomplishing video format conversion and frame rate up-conversion, FPGA outputs image of XGA resolution and realizes an autofocusing algorithm. According to focus information of FPGA and iris＇ information of DSP, and combining determinate control method to control stepping motor of optical lens, MCU realizes auto focusing and auto iris. The camera is characteristic of high output resolution, high picture quality, easy for function extension and so on, and it is widely used in video presenter of education and commerce.
出处
《电脑开发与应用》
2009年第4期37-39,55,共4页
Computer Development & Applications
基金
太原理工大学技术开发项目(编号:203-24041221)
