摘要： FPGA越来越多地应用于各种数字信号处理系统中。针对空域精细可扩展编码算法，提出一种基于FPGA的预处理器设计方案，该编码预处理器占用较少的外部存储空间缓存帧数据，充分利用数据操作之间的并行性和流水性，生成视频数据的多描述码流。FPGA实现结果表明，该预处理器能满足应用空域精细可扩展编码算法的视频压缩传输系统的功能要求和实时性要求。

关键词: FPGA, 精细可扩展编码, 预处理器

Abstract: FPGA is more and more used in many kinds digital signal processing systems. A preprocessor for S-FGS based on FPGA is presented which can produce five description coding streams of video images. The preprocessor does not use very large RAM to store frame data, and can fully apply the parallel and pipeline of data operation. Experimental results show the design can meet the function and real-time requirement of S-FGS.

Key words: FPGA, Fine granularity scalable coding, Preprocessor