浓度场测量的差分吸收光谱CT技术 |
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引用本文: | 陈韶华. 浓度场测量的差分吸收光谱CT技术[J]. 光学技术, 2003, 29(2): 223-225 |
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作者姓名: | 陈韶华 |
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作者单位: | 湖北大学,物理学与电子技术学院,湖北,武汉,430062 |
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基金项目: | 国家自然科学基金资助项目(69878007),湖北省自然科学基金资助项目(98J078),图像信息处理与智能控制教育部重点实验室开放研究基金资助项目(TKLJ0112),湖北省教育厅重点科研计划资助项目(2001A01014) |
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摘 要: | 提出了一种新的用于浓度场测量的差分吸收光谱CT技术。利用差分吸收原理进行浓度场多方位积分测量,采用少数投影最大熵重建算法进行层析图像重建。数值模拟结果表明,在0°~180°视场范围内,在4个不同的投影视角方向获取投影数据的条件下,能有效地重建出待测场分布。该技术具有较高的重建精度和良好的抗噪声性能。
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关 键 词: | 差分吸收 浓度场 光学层析 数值模拟 |
文章编号: | 1002-1582(2003)02-0223-03 |
修稿时间: | 2002-04-10 |
Computer tomography technique of differential absorption spectrum for the measurement of concentration field |
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Abstract: | A new computer tomography technique of differential absorption spectrum for the measurement of concentration field is presented. The principle of differential absorption is used for the multidirectional integral measurement of concentration field, and tomographic images are reconstructed using the algorithm of image reconstruction from fewer views by a maximum entropy approach. The results of numerical simulation show that this technique has fairly high accuracy and good stability against noise. |
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Keywords: | differential absorption concentration field optical tomography numerical simulation |
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