不完全数据层析成像中的伪影--及其在光声层析成像和声纳中的应用
Artifacts in incomplete data tomography - with applications to photoacoustic tomography and sonar
摘要:
我们开发了一个范例,使用微局部分析,使人们能够在广泛的不完整的数据断层扫描问题的特征可见和添加的奇点。我们给出了精确的表征的照片和热声层析成像和声纳,并提供伪影减少策略。特别是,我们的定理表明,它是更好地安排声纳检测器,使检测器的集合的边界没有角落,是光滑的。为了说明我们的研究结果,我们提供了从合成球面平均数据以及从实验光声数据重建。
英文摘要:
We develop a paradigm using microlocal analysis that allows one to characterize the visible and added singularities in a broad range of incomplete data tomography problems. We give precise characterizations for photo- and thermoacoustic tomography and Sonar, and provide artifact reduction strategies. In particular, our theorems show that it is better to arrange Sonar detectors so that the boundary of the set of detectors does not have corners and is smooth. To illustrate our results, we provide reconstructions from synthetic spherical mean data as well as from experimental photoacoustic data.
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