Traffic video visibility detecting method based on road surface brightness and least square approach
A technology of least square method and detection method, which is applied in measuring devices, material analysis through optical means, image data processing, etc., and can solve problems such as poor timeliness, low precision, and high price
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[0066] In conjunction with accompanying drawing, the traffic video visibility detection method based on road surface apparent brightness and least square method of the present embodiment is characterized in that read the apparent brightness value of road surface in the road traffic video and combine least square method to establish objective function and calculate visibility value V met , including the following steps:
[0067] 1) Road traffic video image collection: Use the PTZ camera for road test on the highway to collect video images in foggy weather. When the visibility is lower than 20 meters, the highway will be closed; when the visibility exceeds 200 meters, the vision is good and no monitoring is required, so it is generally concerned The visibility distance is between 20 and 200 meters. Therefore, the collected video images must meet the requirements that the distance from the camera to the bottom row of pixel areas of the image is not more than 20 meters, and the top...
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