基于硬件加速的高精度实时图像处理系统设计

High-precision Real-time Image Processing System Based on Hardware Acceleration

高精度实时图像处理在众多领域中具有广泛的应用前景;在分析高精度实时图像处理要求的基础上,设计实现了基于硬件加速的高精度实时图像处理系统;系统采用浮点嵌入式硬件协处理单元对高精度图像处理进行加速;协处理单元和主机之间的高速数据通路和控制通路,便于主机与协处理单元的数据传输及对协处理单元进行软封装;并在此基础上通过软件设计实现了图像的流水线并行处理,可明显提高系统处理速度;通过实验证明,对于文中采用的算法,相比主机本系统可将图像处理速度提高30%以上,达到25帧/s的高精度实时图像处理要求。

Higb-precision real time image processing is widely used in many fields, and such an image processing system based on hardware acceleration is presented. In the system, a float -point embedded assistant processing unit is used to accelerate the high precision processing, while data and control interfaces between assistant processing unit and the host give facilities for the image data being transferred rapidly and software package of the unit, and pipe-line parallel processing is achieved via the proposed software design. It is experimentally shown that, as for the algorithm we employed the speed of image processing is evidently improved for more than 300% compared to host pro cessing, and high- precision real -time processing of 25 frame/sec is achieved.