摘要
针对高空无人机航拍图像序列需要高输入码率、高压缩比、低复杂度、精确定比以及实时压缩的需求,设计了一套基于ADV202+DSP+FPGA架构的高性能无人机序列图像实时压缩系统。该系统以ADV202为核心压缩芯片完成帧组图像的高效率JPEG2000编码,并通过DSP对图像序列进行帧组划分和帧组内运动估计以进一步提高ADV202对运动图像序列的压缩性能,通过FPGA实现对ADV202的配置和数据流管理。实验结果表明,该系统具有压缩比高,压缩速度快,恢复图像视觉质量好,定比性能好,低功耗和高稳定性的优点,具有良好的工程应用价值。
Focus on the image compressing problem of unmanned aerial vehicle（UAV） with high input pixel rate,high compression ratio,low algorithm complexity,and fixed output-bandwidth requirements,a high-performance image sequence compressing system for UAV based on ADV202＋DSP＋FPGA was proposed in this paper.The ADV202 in the system was used to serve as the main compressing chip to implement the high efficiency JPEG2000 codec to frame-groups.The DSP was used to divide image sequences into frame-groups firstly.And the motion estimate and compensation were carried out in per frame-group by DSP to improve the compression performance.The configuration of ADV202 and the control of data flow were implemented by FPGA.The experiment results show that this system has the advantages of high compression ratio,fast compression rate,low power consumption,and high stability,which will make it have good prospect in engineer.
出处
《计算机与数字工程》
2010年第11期136-140,178,共6页
Computer & Digital Engineering
基金
国家自然科学基金(编号:60972081)
航天十一五专项(编号:61801040303)
博士后科学基金(编号:20090460955)资助
