| 条纹激光扫描水下成像系统中像面照度特性的研究 |
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| 引用本文： | 杨柳,杨克成,夏珉,雷选华,葛卫龙,饶炯辉.条纹激光扫描水下成像系统中像面照度特性的研究[J].光学与光电技术,2007,5(5):78-81. |
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| 作者姓名： | 杨柳 杨克成 夏珉 雷选华 葛卫龙 饶炯辉 |
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| 作者单位： | 1. 华中科技大学光电子科学与工程学院,武汉,430074
2. 海军工程大学光信息科学与技术教研室,武汉,430033 |
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| 摘 要： | 条纹激光扫描成像方法能够同时满足水下激光成像系统对增大视场和减小后向散射光影响的要求.对条纹激光扫描成像系统中的像面照度特性进行了理论和实验研究,推导出了目标反射光照度和后向散射光照度的计算式,分析了图像对比度与成像距离间的关系,并进行了极限成像距离的水下实验.实验结果表明该套成像系统的极限成像距离均为2个衰减长度.
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| 关 键 词： | 水下成像 条纹激光扫描 图像对比度 柱透镜 |
| 文章编号： | 1672-3392（2007）05-0078-04 |
| 收稿时间： | 2006/10/13 |
| 修稿时间： | 2006-10-13 |
Image-Plane Irradiance Characteristics of Underwater Imaging System by Using Laser Stripe Scanning |
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| YANG Liu,YANG Ke-cheng,XIA Min,LEI Xuan-hua,GE Wei-long,RAO Jiong-hui.Image-Plane Irradiance Characteristics of Underwater Imaging System by Using Laser Stripe Scanning[J].optics&optoelectronic technology,2007,5(5):78-81. |
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| Authors: | YANG Liu YANG Ke-cheng XIA Min LEI Xuan-hua GE Wei-long RAO Jiong-hui |
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| Institution: | 1 School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology; Wuhan 430074, China; 2 Teaching and Research Section of Optical-Information Science and Technology, Naval University of Engineering; Wuhan 430073, China |
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| Abstract: | The laser stripe scanning technique can be used in underwater imaging system to increase field of view and reduce backscatter. Some theoretical and experimental researches are carried out on the image-plane irradiance characteristics of a laser stripe scanning system. Irradiances reflected from object and backscattered from intervening water are calculated re- spectively, and the relationship between image contrast and imaging distance is analyzed based on previous computation ex- pressions. Finally, the imaging limit is tested through a series of underwater experiments. The resules show that the imaging limit distance is two attenuation length. |
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| Keywords: | underwater imaging laser stripe scanning image contrast cylindrical lens |
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