讨论了消除欠采样噪声的途径。

The way to reduce aliasing noise is discussed.

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基于信息理论评价系统，优化系统设计，控制欠采样噪声。

System assessment, system optimizing designs and aliasing noise control all can be done based on information rate.

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受传输带宽限制，网络视频采集系统的采样率低，欠采样噪声严重。

Signal sampling system of video communication over network usually has a low sampling rate suffering from the limited bandwidth, so aliasing noise is big problem.

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