摘要
在压缩的多媒体数据上直接处理图像可以提高多媒体应用的整体性能和处理速度 给出 7种压缩域规则几何变换 ,通过编程实现了其中三种 ,其图像几何变换的生成时间比在空域的生成时间短 。
Image processing in compressed domain can enhance the overall performance and processing speed of multimedia application We worked out seven regular geometric transform algorithms in compressed domain and realized three of them by C programming, namely mirroring about vertical, horizontal and diagonal axis As verified by experiments, the processing speed of regular geometric transform in compressed domain is much faster than in spatial domain and the image quality is almost unaffected
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
2003年第7期893-897,共5页
Journal of Computer-Aided Design & Computer Graphics
关键词
几何变换
图像质量
图像编码
图像压缩
图像处理
compressed domain
image processing
JPEG
DCT transform domain
geometric transform
