Accurate and efficient image intensifier distortion correction algorithm for volume tomographic angiography

Xiaohui Wang; Ruola Ning

doi:10.1117/1.601930

1 March 1998 Accurate and efficient image intensifier distortion correction algorithm for volume tomographic angiography

Xiaohui Wang, Ruola Ning

Author Affiliations +

Optical Engineering, Vol. 37, Issue 3, (March 1998). https://doi.org/10.1117/1.601930

The recent advance in image intensifier based volume tomographic angiography has stirred a significant interest in the development of accurate and efficient algorithms to correct image intensifier distortions. An algorithm and its calibration protocol are developed to correct the distortion caused by the image intensifier–CCD camera imaging chain in a single step regardless of distortion sources. This algorithm first partitions a distorted image into small quadrilateral regions, then maps each region individually to the corrected image using the corresponding bilinear functions. The general applicable parameters of these bilinear functions can be obtained using a specially designed grid phantom. The algorithm and the calibration protocol are tested using this grid phantom on a newly built image intensifier based volume tomographic angiography imaging system. The maximum distortion error is reduced from 5.96 mm before correction to 0.05 mm after correction. Further validation of the proposed algorithm is performed through three-dimensional tomographic reconstructions of a vascular phantom and animal studies. The reconstruction results indicate that the accuracy of the algorithm and the calibration protocol is acceptable for volume tomographic angiography. This algorithm can also be applied to radiation therapy and stereosurgical treatment planning where image intensifier distortions must be corrected.

Citation Download Citation

Xiaohui Wang and Ruola Ning "Accurate and efficient image intensifier distortion correction algorithm for volume tomographic angiography," Optical Engineering 37(3), (1 March 1998). https://doi.org/10.1117/1.601930

Published: 1 March 1998

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available