码流分配决策的VHDL实现及仿真

VHDL Implementation and Simulation of Code-stream Assignment Policy

为解决图像码流庞大带来的存储和传输困难,提出了一种针对多路图像译码的码流分配决策,并采用VHDL语言来实现。码流分配前,对图像头文件进行检测,采用两片外挂RAM对检测后的码流进行乒乓操作后,送入多路并行图像处理模块,处理后的码流采用同样的分配方式进行缓存。结果表明该决策真正实现了图像码流传输的实时性和准确性,而且其可移植性强,可以应用到图像处理的很多领域,成为提高码流缓存和传输速度的桥梁。

In order to resolve difficulties in storage and transmission produced by the huge image code-stream,a code-stream assignment policy for multi-channel image coding is proposed,and implemented with VHDL.Before assigning code-stream,the image header file is detected,the Ping-Pong operation on the detected code stream carried out by using 2 expanded RAM,then sent to the multi-channel parallel image processing module.The processed code-stream is also stored with the same way.The experiment results indicate that the policy could really achieve the real-time feature and accuracy of image code stream transmission,and for its portability,could serve as a bridge to enhance the speed of code-stream transmission and cache.,and thus is applicable to successive image processing in various areas.