论文标题
通过投影域可分离建模进行动态断层扫描重建
Dynamic Tomography Reconstruction by Projection-Domain Separable Modeling
论文作者
论文摘要
在动态断层扫描中，当对象序列地获取投影时，对象发生变化。结果不一致的投影集不能直接用于重建与时间瞬间相对应的对象。相反，目的是重建对象的时空表示，可以显示为电影。我们分析了这个不适合的逆问题的独特且稳定的解决方案的条件，并提出了一种恢复算法，并通过实验验证了它。我们根据最近提出的GMLR变化对视频的Deep for Video进行了比较，这证明了所提出的方法的优势。
In dynamic tomography the object undergoes changes while projections are being acquired sequentially in time. The resulting inconsistent set of projections cannot be used directly to reconstruct an object corresponding to a time instant. Instead, the objective is to reconstruct a spatio-temporal representation of the object, which can be displayed as a movie. We analyze conditions for unique and stable solution of this ill-posed inverse problem, and present a recovery algorithm, validating it experimentally. We compare our approach to one based on the recently proposed GMLR variation on deep prior for video, demonstrating the advantages of the proposed approach.
