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- W4296412021 abstract "The method of common lines is a well-established reconstruction technique in cryogenic electron microscopy (cryo-EM), which can be used to extract the relative orientations of an object given tomographic projection images from different directions. In this paper, we deal with an analogous problem in optical diffraction tomography. Based on the Fourier diffraction theorem, we show that rigid motions of the object, i.e., rotations and translations, can be determined by detecting common circles in the Fourier-transformed data. We introduce two methods to identify common circles. The first one is motivated by the common line approach for projection images and detects the relative orientation by parameterizing the common circles in the two images. The second one assumes a smooth motion over time and calculates the angular velocity of the rotational motion via an infinitesimal version of the common circle method. Interestingly, using the stereographic projection, both methods can be reformulated as common line methods, but these lines are, in contrast to those used in cryo-EM, not confined to pass through the origin and allow for a full reconstruction of the relative orientations. Numerical proof-of-the-concept examples demonstrate the performance of our reconstruction methods." @default.
- W4296412021 created "2022-09-20" @default.
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- W4296412021 date "2022-09-16" @default.
- W4296412021 modified "2023-09-24" @default.
- W4296412021 title "Motion Detection in Diffraction Tomography by Common Circle Methods" @default.
- W4296412021 doi "https://doi.org/10.48550/arxiv.2209.08086" @default.
- W4296412021 hasPublicationYear "2022" @default.
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