| 图象重建中的最优化方法 |
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| 引用本文： | 孙晓安,陈淑珍,吴志斌,柴亚萍.图象重建中的最优化方法[J].中国图象图形学报,1999,4(2):105-109. |
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| 作者姓名： | 孙晓安 陈淑珍 吴志斌 柴亚萍 |
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| 作者单位： | 武汉大学电子信息学院 |
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| 摘 要： | 首先讨论了投影数据零空间对重建结果的结果，分析了代数重建算法（ＡＲＴ）的收敛过程以及对不投影数据ＡＲＴ方法的重建结果，针对投景数据不完备约束的问题，将统计物理学中的模拟退火的ＡＲＴ的迭代过程中，根据对图象像素间连续性的假设，最平稳解的约束，并利用模拟退火方法得到最优。
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| 关 键 词： | 零空间 图象重建 代数重建算法 最优化 |
Opeimal Method in Image Reconstruction |
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| Sun Xiaoan,Chen Shuzhen,Wu Zhibin and Chai Yaping.Opeimal Method in Image Reconstruction[J].Journal of Image and Graphics,1999,4(2):105-109. |
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| Authors: | Sun Xiaoan Chen Shuzhen Wu Zhibin and Chai Yaping |
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| Abstract: | The effect of null space of projecting data on reconstruction result is discussed. Then the convergence procedure of Algebra Reconstruction Technique (ART) and its reconstruction result for incomplete projecting data are analyzed. Simulated Annealing(SA) method in statistic physics is introduced into the iteration of ART method to deal with the problem of incomplete constraint. Based on the assumption of continuity among image pixels, constraint of most stable solution is added to get the optimal solution by means of Simulated Annealing method. |
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| Keywords: | Null space image reconstruction Algebra reconstruction technique Simulated annealing |
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