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    投影数对ART算法重建质量的影响

    The Influence of Projection Number on Reconstruction Quality of Algebraic Reconstruction Technique

    • 摘要: 针对不完全投影数据的重建问题,提出了利用代数重构技术(ART)算法进行图像重建。分析了投影数对重建线性方程组解的影响,在此基础上通过仿真试验具体研究了不同投影角数和不同射线数对重建质量的影响。试验结果表明,增加每个角度下的射线数可有效提高重建质量,在射线数保持不变时,选择合适的投影角数能够获得较好的重建质量。

       

      Abstract: The algebraic reconstruction technique(ART) was proposed to reconstructing image from incomplete projection data. The influence of projection number on the solution of reconstruction linear equations was analyzed, then, the influence of number of projection views and rays on reconstruction quality were studied by simulation experiments. The result showed that increasing the number of rays for every projection view can improve the reconstruction quality effectively and choosing suit number of projection views can get better image if the number of rays remains unchanged.

       

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