Genetic algorithms applied to reconstructing coded imaging of neutrons and analysis of residual watermark
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Genetic algorithms applied to reconstructing coded imaging of neutrons and analysis of residual watermark
- 发表刊物：
- Review of Scientific Instruments(RSI)
- 摘要：
- Abstract
Monte-Carlo simulation of neutron coded imaging based on encoding aperture for Z-pinch of large field-of-view with 5 mm radius has been investigated, and then the coded image has been obtained. Reconstruction method of source image based on genetic algorithms (GA) has been established. 'Residual watermark,' which emerges unavoidably in reconstructed image, while the peak normalization is employed in GA fitness calculation because of its statistical fluctuation amplification, has been discovered and studied. Residual watermark is primarily related to the shape and other parameters of the encoding aperture cross section. The properties and essential causes of the residual watermark were analyzed, while the identification on equivalent radius of aperture was provided. By using the equivalent radius, the reconstruction can also be accomplished without knowing the point spread function (PSF) of actual aperture. The reconstruction result is close to that by using PSF of the actual aperture.
Zhang TK, Hu HS, Jia QG, et al. Genetic algorithms applied to reconstructing coded imaging of neutrons and analysis of residual watermark[J]. Review of Scientific Instruments,2012,83(11):113505-1-113505-9
- 合写作者：
- Zhang TK, Hu HS, Jia QG, et al.
- 卷号：
- 2012,83(11)
- 页面范围：
- 113505-1-113505-9
- 是否译文：
- 否
- 发表时间：
- 2012-11-15
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