摘要
JPEG2000中的可逆小波变换利用整数到整数的小波变换技术。这种变换通过一维双通道完 全重构通用极大值滤波带实现,对图像块进行5/3滤波,获得的低通信号进行再滤波,得到的系数通过组合就成为JPEG2000文件数据。通过TMS320VC5402芯片实现这种滤波并优化汇编程序设计。该技术可实现对图像的有损和无损压缩,在其他图像处理领域也可以直接利用。
Reversible wavelet transform in JPEG2000 uses integer-to-integer wavelet transform technique. This transform is carried out through fully reconstructed general maximum filtering band with 1-D dual-channel. 5/3 filtering for image block is carried out and filtering for the obtained low-pass signal is performed again. The obtained coefficient will become JPEG2000 file data through assembling. Fast wavelet transform and the optimization of assembling program are carried out with TMS320VC5402 chip. The technology can be applied to both lossy and lossless image compression, and it can be also applied to other image processing fields.
出处
《光电工程》
EI
CAS
CSCD
北大核心
2004年第5期59-63,共5页
Opto-Electronic Engineering
基金
重庆市信息产业局科技攻关项目(200113013)
关键词
图像压缩
小波变换
数字信号处理器
Image compression
Wavelet transform
Digital-signal processors
