Research on ART of Image Reconstruction Method for ICT
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摘要: 工业CT是一种先进的无损检测手段。传统的滤波反投影算法（FBP）要求完备的投影数据，而实际检测中往往由于客观原因无法获得完全的投影数据。针对不完全投影的数据重建问题，提出了利用代数重建法（ART）进行图像重建。分析了影响ART算法的重建速度和重建质量的因素，通过仿真实验对两种算法的重建质量进行了比较。结果表明，在投影数据不完备时，ART算法的重建质量要优于FBP算法。Abstract: Industrial computed tomography(ICT) is an advanced means for nondestructive testing. Traditional filtered backprojection(FBP) method required complete projection data, which were often difficult or even impossible to acquire for objective reasons. The algebraic reconstruction technique(ART) was proposed to reconstruct image from incomplete projection data. The factors influencing reconstruction speed and quality of ART were analyzed, the reconstruction quality of the two methods was compared by simulation experiments. The results showed that the reconstruction quality of ART was better than FBP when the projection data were incomplete.
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