一种多核实时图像处理模块设计与实现

Design and Implementation of Multi-core Real-time Image Processing Module

实时图像处理能力是嵌入式系统中影响系统性能的核心因素。为充分挖掘多核DSP性能,从计算机系统结构的角度出发,开展对多核DSP实时图像处理体系结构的研究,设计了一种基于TMS320C6678的实时图像处理模块。采用FPGA进行实时图像的采集和缓存,利用四线Rapid IO高速接口完成FPGA与DSP之间的数据传输,并设计了四级图像缓冲流水处理结构,实现了图像采集、缓存、处理和发送的并行进行。设计了一套基于数据块共享的实时图像处理多核协同处理机制,可以充分利用C6678八个核的优势,实现对图像的实时处理。

Real - time image processing ability is the key factor for visual applications, especially embed-ded systems. To fully exploit the performance of multicore DSP,this paper studies the architecture of real -time image processing in the light of computer architecture and designs a real - time image processing module based on TMS320C6678. Real- time image data stream is acquired and buffered by FPGA. Com-munication between DSP and FPGA is achieved by using four lane RapidIO interface. The hardware scheme of the processing in FPGA possesses a linear four - level pipeline architecture, which makes the operation of image acquisition,buffering,processing and transferring can be completed almost at the same time. A kind of shared memory interconnection method is proposed to solve the rapid inter-core communi-cation problems among C66xx cores and the system achieves up to real - time image processing speed fi-nally.