一种基于DSP和FPGA的自适应模版匹配跟踪系统设计  

A Self-adjust Image Matching Tracking System Design Based on DSP and FPGA

作　　者：游培寒[1] 胡瑜[1] 盛平[1,2] 王志民[3] 

机构地区：[1]95856部队 [2]94921部队 [3]南京理工大学

出　　处：《弹箭与制导学报》2013年第5期16-22,共7页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：以TMS320DM642芯片(DSP)和EP3C25F324C7芯片(FPGA)为主体,设计了一套自适应视频跟踪系统。DSP用于控制视频编解码芯片,完成实时图像的缓存处理,FPGA完成模版匹配计算,系统根据匹配结果自适应更新模板,满足视频位移、放大、旋转等需求。由于模版匹配计算与视频通道隔离,避免了图像迟滞,同时FPGA的并行处理方式极大提高了系统的数据处理量和处理速度。试验表明,系统对于720×625像素图像数据的处理能力可以达到或超过每秒25帧,最大匹配模版可以达到128×128像素。Based on a TMS320DM642（DSP） and an EP3C25F324C7 （FPGA） , a self-adjust image matching and tracking system was de- signed. DSP controls video encode and decode chip, and deals with image store. Template matching calculation and template adjust were accomplished in FPGA. According to image matching result, the system can self-refresh template data and satisfy the need of tracking aim＇ s displacement, rescale and rotate. The system can avoid image display delay because template matching and refreshment are independent. FPGA paralld calculation process can raise system speed and enlarge template area. The simulation results show that the largest templates of system can get 128 x 128 pixels and the whole system can process 25 image frame of 720 x 625 pixels per second.

关 键 词：数字信号处理器 可编程逻辑阵列 图像跟踪 模版匹配 

分 类 号：V249.322[航空宇航科学与技术—飞行器设计]