基于FPGA的高帧频图像跟踪系统设计

Design of High frame rate Image tracking system based on FPGA

摘要:

针对高速运动的导弹末端制导、弹道实验或机载武器姿态跟踪中目标图像模糊及跟踪精度较低的问题,给出一套基于CMOS高帧频图像传感器与FPGA的高速图像跟踪系统。在FPGA中采用流水线方式,设计了的图像采集模块、乒乓高速缓存模块、图像处理及跟踪控制模块,采用动态阈值分割法获取目标,计算出目标形心偏移图像视场中央的偏移量,依据二维视场的偏移量控制云台跟踪目标。实验结果表明,该系统能够有效获得高帧频图像传感器数据,数据读出速率可达80Mb/S,提高了系统跟踪精度。

Abstract:

As to the problem of target image blurring and low tracking accuracy in high-speed missile terminal missile guidance, ballistic experiment and airborne weapon attitude tracking system, a high-speed image tracking system based on high frame rate CMOS image sensor and FPGA is introduced. Image acquisition module, ping-pong high speed cache module, image processing and tracking control module are designed in FPGA by using pipeline technique. Target image is acquired by using adaptive threshold image segmentation algorithm, and the target offset between the centroid and the center of the view field is calculated, pan-tilt is controlled to tracking target according to the offset of two-dimensional view field. Experiments results show that the system can effectively obtain high frame rate image and can read data rate at 80Mb/sec, which improves the system tracking accuracy.