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Probabilistic Evaluation of Three-Dimensional Reconstructions from X-Ray Images Spanning a Limited A...

Bibliographic Details
Authors and Corporations: Frost, Anja (Author), Renners, Eike (Author), Hötter, Michael (Author), Ostermann, Jörn (Other)
Title: Probabilistic Evaluation of Three-Dimensional Reconstructions from X-Ray Images Spanning a Limited Angle Anja Frost; Eike Renners; Michael Hötter; Jörn Ostermann
Media Type: E-Article
Language: English
published:
2012
Source: Verbunddaten SWB
Lizenzfreie Online-Ressourcen
Description
Abstract: An important part of computed tomography is the calculation of a three-dimensional reconstruction of an object from series of X-ray images. Unfortunately, some applications do not provide sufficient X-ray images. Then, the reconstructed objects no longer truly represent the original. Inside of the volumes, the accuracy seems to vary unpredictably. In this paper, we introduce a novel method to evaluate any reconstruction, voxel by voxel. The evaluation is based on a sophisticated probabilistic handling of the measured X-rays, as well as the inclusion of a priori knowledge about the materials that the object receiving the X-ray examination consists of. For each voxel, the proposed method outputs a numerical value that represents the probability of existence of a predefined material at the position of the voxel while doing X-ray. Such a probabilistic quality measure was lacking so far. In our experiment, false reconstructed areas get detected by their low probability. In exact reconstructed areas, a high probability predominates. Receiver Operating Characteristics not only confirm the reliability of our quality measure but also demonstrate that existing methods are less suitable for evaluating a reconstruction.
Physical Description: Online-Ressource