强散射体产生的像面散斑对比度与随机表面及成像系统关系的研究
文献类型：期刊论文
| ; | |
| 作者 | 宋洪胜 ; 程传福 ; 张宁玉 ; 任晓荣 ; 滕树云 ; 徐至展 |
| 刊名 | 物理学报
 |
| 出版日期 | 2005 |
| 卷号 | 54期号:2页码:669 |
| ISSN号 | 1000-3290 |
| 关键词 | random surface image speckle contrast |
| 其他题名 | Study on the dependence of the contrast of image speckles produced by strong scattering-object on random surface and imaging system |
| 中文摘要 | We study the statistical properties of the image speckles produced by strong-scattering objects in the 4f optical imaging system. Using the generic expression of the complex amplitude of speckles and the approximation of the double-exponential function, we first obtain the ensemble average of the speckle intensity. Then we derive the variance of the speckle intensity based on the rotational transformation of the real and imaginary parts of the complex amplitude of speckles. We finally obtain the expression for the contrast of the. speckles, which is explicitly related to the statistical parameters of random surface and to the parameters of the imaging system. Our results are an obvious improvement compared with those reported in the literature, where the relations including such implicit quantities as the average size of the scattering grains of the random surface and the number of scattering grains are usually used. The results of this paper would be helpful for the characterization of random surface by speckle contrast. |
| 学科主题 | 激光技术;激光物理与基本理论 |
| 收录类别 | ei |
| 语种 | 中文 |
| 公开日期 | 2009-09-18 ; 2010-10-12 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/332]  |
| 专题 | 上海光学精密机械研究所_强场激光物理国家重点实验室 |
| 推荐引用方式 GB/T 7714 | 宋洪胜,程传福,张宁玉,等. 强散射体产生的像面散斑对比度与随机表面及成像系统关系的研究, Study on the dependence of the contrast of image speckles produced by strong scattering-object on random surface and imaging system[J]. 物理学报,2005,54(2):669, 676. |
| APA | 宋洪胜,程传福,张宁玉,任晓荣,滕树云,&徐至展.(2005).强散射体产生的像面散斑对比度与随机表面及成像系统关系的研究.物理学报,54(2),669. |
| MLA | 宋洪胜,et al."强散射体产生的像面散斑对比度与随机表面及成像系统关系的研究".物理学报 54.2(2005):669. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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