重点分析了利用经典的卷积反投影算法重建康普顿背散射扫描图像过程中的数据修正问题。
The paper primarily analyses the data correction in reconstructing the image of CBS in the manner of classical filtered back-project.
本文分析FDK算法在中大锥角时重建产生伪影的主要原因是投影数据不完全，被扫描物体雷当空间数据缺失。
The main reason is the radon space data of scanned object is not complete, which will result in the image artifacts when using FDK algorithm to reconstruct with moderate or large cone angles.
行移文本水印算法，强鲁棒性，边界扫描采用投影法。
Line shift text watermarking algorithm, strong robustness, use of boundary.
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