桥梁挠度光电成像测量系统的光度学特性分析 |
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引用本文: | 陈伟民,鲁进,夏哲,朱永.桥梁挠度光电成像测量系统的光度学特性分析[J].光子学报,2005,34(1):129-133. |
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作者姓名: | 陈伟民 鲁进 夏哲 朱永 |
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作者单位: | 重庆大学光电工程学院,重庆,400044 |
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基金项目: | 国家科技攻关项目 (2 0 0 2BA10 5C),重庆市重大科技攻关专项(72 89) |
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摘 要: | 根据桥梁挠度光电成像测量系统的要求,分别对实际野外工作条件下,系统的像面照度、成像对比度等光度学特性进行了分析、计算,讨论了系统的发光靶标、背景光、光电数字摄像机等系统参数与环境之间的相互制约关系,并讨论了在强烈日光条件下,用高反射率材料代替发光靶标以提高成像对比度的可能性. 提出了桥梁挠度的光电成像测量系统设计中,系统参数选择的光度学设计准则.
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关 键 词: | 光度学特性 照度 对比度 成像 挠度 |
收稿时间: | 2003-11-10 |
修稿时间: | 2003年11月10 |
Analysis on the Photometric Characteristics of Imaging Deflection Measuring System for Bridge |
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Institution: | (Department of Optoelectronic Engineering, Chongqing University, Chongqing 400044) |
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Abstract: | The calculation of the photometric characteristics such as image plane′s illumination and contrast are presented according to the demand of photoelectric imaging deflection measurement system. The relationship between the source, background radiation, optical system and image sensor is analyzed. Illumination and contrast on the image plane of camera are also discussed when replacing the system′s source with high reflectivital material or using material with low reflectivity replacing background. The result contributes to putting forward the method of photometric design of photoelectric imaging deflection measurement system. |
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Keywords: | Photometric characteristics Illumination Contrast Imaging Deflection |
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