Accurate and efficient image-intensifier distortion-correction algorithm and its application in volume tomographic angiography

Xiaohui Wang; Ruola Ning

doi:10.1117/12.274012

2 May 1997 Accurate and efficient image-intensifier distortion-correction algorithm and its application in volume tomographic angiography

Xiaohui Wang, Ruola Ning

Author Affiliations +

Proceedings Volume 3032, Medical Imaging 1997: Physics of Medical Imaging; (1997) https://doi.org/10.1117/12.274012
Event: Medical Imaging 1997, 1997, Newport Beach, CA, United States

Abstract

An algorithm has been developed to correct the image distortion introduced by the image intensifier - CCD camera chain in our volume tomographic angiography imaging system. First the distorted image is partitioned into small quadrilateral regions, then each partition is mapped individually to the corrected image by its corresponding bilinear functions. The parameters of these bilinear functions can be acquired by a special calibration procedure and stored as a lookup table. The maximum errors before and after the distortion correction were measured to be 5.96 mm and 0.03 mm. The method is further applied to the 3D image reconstruction of a simulated vascular phantom and live animal studies.

Citation Download Citation

Xiaohui Wang and Ruola Ning "Accurate and efficient image-intensifier distortion-correction algorithm and its application in volume tomographic angiography", Proc. SPIE 3032, Medical Imaging 1997: Physics of Medical Imaging, (2 May 1997); https://doi.org/10.1117/12.274012

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