发明名称 |
Video camera-based visibility measurement system |
摘要 |
A video camera based atmospheric visibility measurement system that is capable of providing automated measurements of atmospheric visibility during both the day and night. For daylight measurements, the system views an image that has contrasting portions. A representative contrast signal is generated for contrasting portions of the images. The representative contrast number is used to generate an exponential curve of contrast levels versus distance. Atmospheric visibility is determined by detecting where the exponential curve reaches a threshold of visibility.
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申请公布号 |
US6853453(B2) |
申请公布日期 |
2005.02.08 |
申请号 |
US20020330831 |
申请日期 |
2002.12.26 |
申请人 |
REGENTS OF THE UNIVERSITY OF MINNESOTA |
发明人 |
KWON TAEK MU |
分类号 |
G01N21/53;G01N21/59;(IPC1-7):G01N21/59 |
主分类号 |
G01N21/53 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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