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阴影图域角上取样稀疏视图微CT与密集的残余等级变压器和注意力加权损失的角度上取样

Amogh Subbakrishna Adishesha1, Daniel J Vanselow2, Patrick La Riviere3

  • 1Pennsylvania State University, College of Information Sciences and Technology, University Park, 16802, PA, USA.

Computer methods and programs in biomedicine
|September 22, 2023
PubMed
概括

一个新的密集残留层次变压器 (DRHT) 网络从低样本微型CT扫描中恢复高质量的阴影图. 这种方法减少了噪音和文物,使得扫描速度更快,辐射暴露率更低.

关键词:
注意权重损失的注意力.微型CT技术的使用稀疏的视图可以看到.

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Upsampling01:22

Upsampling

Managing signal sampling rates is essential in digital signal processing to maintain signal integrity. A decimated signal, characterized by a reduced frequency range due to its lower sampling rate, can be upsampled by inserting zeros between each sample. This upsampling process expands the original spectrum and introduces repeated spectral replicas at intervals dictated by the new Nyquist frequency. To refine this zero-inserted sequence, it is passed through a lowpass filter with a cutoff...
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