sampling inspection variables 释义:计量取样检查 spatial sampling frequency 释义:空间取样频率 impinger 释义:撞击式测尘计,撞击取样器,撞击器,尘埃计(数器),空气采样器,尘埃测定器,冲击器,冲击式尘埃测定器 ..
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The traditional way is to obtain the sub-image by sampling the noised image in spatial or frequency domain, then calculate its variance to replace that of the original noise.
传统方法是通过空域或频域采样,得到该子噪声图像,然后直接对其估计方差,它对图像信息的分布有要求。
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