但是，由于在图像压缩、微处理器和无线数据带宽等技术上的进步，智能手机对于忙碌的医生来说很有可能成为像呼机一样必不可少的工具。
But thanks to advancements in image compression, microprocessors and wireless-data bandwidth, the smartphone may prove to be, like beepers, an essential tool for on-the-go doctors.
为了更加有效的利用带宽和节约存储空间，往往需要对图像和视频进行有损压缩。
For sake of using bandwidth more effectively and saving the storage media, it is necessary to make lossy compression on image and video.
由于空间图像数据量巨大，传输信道带宽资源有限，所以空间图像压缩算法成为近年来研究的热点。
The space image data is in large quantities, and the channel bandwidth resources are limited, therefore the space image data compression algorithm has become hot recently.
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