Abstract
Starting from the distortion characteristics, correction precision and real time correction requirements for XRS-152/153 image intensifier DR/CT system, a cubic polynomial curve-fitting algorithm was proposed. Meanwhile, in order to solve its calculation complexity problem, graphic processing unit (GPU) was applied to make use of its high parallel and fast floating-point calculation abilities. In the implementation, the image was mapped to the GPU's texture and multi-thread parallel calculation was adopted. The experimental results show that the correction algorithm could effectively restore the original information of the image. In addition, the acceleration with GPU could realize the real-time distortion correction without the loss of image information.
| Original language | English |
|---|---|
| Pages (from-to) | 1440-1444 |
| Number of pages | 5 |
| Journal | Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics |
| Volume | 38 |
| Issue number | 11 |
| State | Published - Nov 2012 |
Keywords
- Digital radiography
- Graphic processing unit
- Image distortion
- Image intensifier
- Polynomial fitting
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