摘要
针对基于分块的医学图像DCT变换压缩中恢复图像的方块效应,提出了一种自适应DCT变换域修正方法。通过模拟实验表明,该方法能在消除方块效应的同时保留图像的高频部分信息,并且不需要复杂的计算,在满足适合实时性的应用需求下,可以很好消除恢复图像中的方块效应,给医生良好的视觉效果。
In this paper, an adaptive approach by modifying little DCT coefficients is proposed to remove the blocking effects in block-based DCT medical compressed images.Simulation results show that the proposed method can significantly reduce the blocking effects with preserving high frequencies of the original images.Furthermore, it requires no complex computation, so it is suitable for real-time applications.
出处
《微机发展》
2005年第4期60-62,65,共4页
Microcomputer Development
基金
镇江市社会发展基金资助项目(SH2003014)
关键词
方块效应
离散余弦变换
医学图像
blocking effects
discrete cosine transform
medical image
