Hang X, Greenberg N L, Qin J, Thomas J D
Ohio State University, USA.
Comput Cardiol. 2001;28:425-7.
An efficient compression strategy is indispensable for digital echocardiography. Previous work has suggested improved results utilizing wavelet transforms in the compression of 2D echocardiographic images. Set partitioning in hierarchical trees (SPIHT) was modified to compress echocardiographic scanline data based on the wavelet packet transform. A compression ratio of at least 94:1 resulted in preserved image quality.
一种高效的压缩策略对于数字超声心动图来说必不可少。先前的工作表明，在二维超声心动图图像压缩中利用小波变换可取得更好的效果。基于小波包变换对分层树状集合分割算法（SPIHT）进行了改进，以压缩超声心动图扫描线数据。至少94:1的压缩比可保证图像质量。
