Visibility detecting method based on monitoring video of traffic condition

Abstract

The invention discloses a visibility detecting method based on road condition monitoring video, which utilizes a camera at the outfield road of highway to carry out video collecting of multiple angles and positions; 10 to 30 frames of images are continuously captured when collecting video images; automatic calibration of the images observing from a target object and pretreatment: the collected video images are carried out automatic switching from an image plane to a world coordinate, 4 to 8 groups of pseudo-range information targets are extracted and separated, and whether the images satisfy features is judged; the visibility detecting method based on road condition monitoring video is adopted to carry out visibility detection on the road condition images by analyzing road condition; the visibility of obtained 15 to 30 frames of images is carried out visibility distance equalization treatment so as to obtain the current visibility value; and a mapping relation from an image coordinate to a road coordinate is established, the image distance information is transformed into road distance information, and then the visibility detection and analysis conforming to human eyes are carried out so as to obtain the visibility value.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation, and designs a monitoring video-based atmospheric visibility detection method and system, which are mainly used for real-time detection and monitoring of road visibility and driving conditions in a traffic monitoring environment. Background technique [0002] With the gradual completion and improvement of national expressways as the main framework network planning, the role of highways in the transportation system and the development of the national economy is becoming more and more important. The modern highway transportation system pursues fast, efficient and safe. The expressway provides good conditions for the high-speed passage of vehicles. However, the atmospheric visibility caused by bad weather such as dense fog, sandstorms, and smog pollution poses a threat to the safe operation and safety of the expressway. Economic benefits have had a greater impact. Highway accident...

AI Technical Summary

Problems solved by technology

However, in the above two patents, the researchers are artificially manufacturing the corresponding markers (targets), using fixed cameras to analyze and detect the strong contrast formed by black and white on the targets, which cannot be detected in multiple positions. Perform a visibility test

At present, the pan-tilt remote control camera is used, and the above systems are difficult to be compatible with the existing platform.

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