AVS编码器中变换量化和扫描的FPGA设计  

The design and implementation of transform quantization and scan for AVS encoder on FPGA

作　　者：杨洪敏[1] 王祖强[1] 徐辉[1] 

机构地区：[1]山东大学信息科学与工程学院,山东济南250100

出　　处：《电子技术应用》2014年第3期41-44,共4页Application of Electronic Technique

摘　　要：提出了一种适用于AVS高清视频编码的变换、量化和扫描的优化设计方案。通过对整数DCT变换算法的优化和对传统Zig-Zag扫描方法的改进,节约了硬件资源和编码时间。根据各模块的运算关系合理地安排流水线结构,采用并行流水处理和复用技术,实现了高清视频编码变换、量化和扫描模块的设计。在FPGA上进行验证的结果表明,该设计满足高清视频实时编码要求。Optimized hardware architecture of transform,quantization and scan for AVS HD video encoding is proposed.Hardware resources are saved by optimizing the algorithm of integer DCT transform module.The improvement of the traditional Zig-Zag scan algorithm saves the time of scanning.According to the arithmetic relationship of each module,pipeline structure is reasonably arranged and parallel pipeline process is used to achieve the design of transform,quantization and scan module in HD video encoding.The validated results on FPGA show that the design meets the requirement of real-time encoding of HD video sequence.

关 键 词：AVS高清视频编码 变换 量化 Zig-Zag扫描 FPGA 

分 类 号：TN919.8[电子电信—通信与信息系统]