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Hardware Implementation on the Weight Calculation of Iterative Algorithm for CT Image Reconstruction
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  • Hardware Implementation on the Weight Calculation of Iterative Algorithm for CT Image Reconstruction
  • Hardware Implementation on the Weight Calculation of Iterative Algorithm for CT Image Reconstruction
저자명
Cao. Xixin,Ma. Kaisheng,Lian. Renchun,Zhang. Qihui
간행물명
ETRI journal
권/호정보
2013년|35권 5호|pp.931-934 (4 pages)
발행정보
한국전자통신연구원
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

The weight calculation in an iterative algorithm is the most computationally costly task in computed tomography image reconstruction. In this letter, a fast algorithm to speed up the weight calculation is proposed. The classic square pixel rotation approximate calculation method for computing the weights in the iterative algorithm is first analyzed and then improved by replacing the square pixel model with a circular pixel model and the square rotation approximation with a segmentation method of a circular area. Software simulation and hardware implementation results show that our proposed scheme can not only improve the definition of the reconstructed image but also accelerate the reconstruction.