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Proceedings Paper

Accurate distortion correction scheme for digital subtraction angiography
Author(s): Haiying Liu; Hsiang-Hsin Hsiung
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Paper Abstract

Robust geometric distortion characterization and correction methods have been developed and validated for DSA application. A compact as well as efficient numerical parameterization technique has been used for characterizing the 3D geometric image distortion of a clinical DNA system. To some extent, the 3rd order polynomial was found to be sufficient for the parameterization of global image distortion for all rotational angles. One of the advantages of the new technique is compact in the sense that it does not require a large distortion parameter look-up table. The new method promises a potential of using less regular distributed calibration points for a complete 3D image distortion characterization of DSA systems. Furthermore, two different schemes based on the pixel mapping for correcting image distortion have been successfully demonstrated yielding satisfactory results.

Paper Details

Date Published: 1 October 1998
PDF: 8 pages
Proc. SPIE 3460, Applications of Digital Image Processing XXI, (1 October 1998); doi: 10.1117/12.323229
Show Author Affiliations
Haiying Liu, Univ. of Minnesota (United States)
Hsiang-Hsin Hsiung, Univ. of Minnesota (United States)


Published in SPIE Proceedings Vol. 3460:
Applications of Digital Image Processing XXI
Andrew G. Tescher, Editor(s)

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