Constraint inflection point line highway visibility detection method

Abstract

The invention discloses a constraint inflection point line highway visibility detection method. The method comprises the steps of 1, obtaining a traffic image in a hazy weather; 2, constraining the traffic image obtained in the step 1, and removing a circle of surrounding pixel points; 3, setting an inflection point line filter for detecting three continuous inflection points; 4, inflection point line filtering is conducted on the constrained picture, and the coordinate value of the inflection point line is obtained; and 5, the haze visibility is obtained according to the obtained coordinates of the inflection point line. According to the invention, the constrained picture is adopted to carry out inflection point line detection, a more accurate inflection point line can be obtained, the problem that a traditional algorithm is easily influenced by surrounding traffic lights, greening and other pixels during inflection point line detection is improved, and a more accurate inflection point line detection result is obtained.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to a method for detecting the visibility of expressways with constrained inflection point lines. Background technique [0002] In the continuous smog weather in our country, visibility has become a common indicator. In smog weather, people often lose their vision due to heavy fog. Larger smog will block distant scenery and make people It is difficult to see hundreds of meters away, so it is easy to cause traffic accidents, so an indicator is needed to describe the loss of vision in foggy weather. Visibility is a description of foggy weather, which can be clearly observed by people's vision indicator of the distance. Nowadays, on the one hand, the smog weather in our country continues to wreak havoc, which brings great troubles to people's daily travel. There are more and more modes of transportation to choose, which makes people's travel more convenient, and t...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for detecting the visibility of highways with constrained inflection point lines to overcome the above-mentioned defects in the prior art. The present invention adopts the method of obtaining the inflection point line after constraining the surrounding pixel points, which improves the traditional visibility detection method. The method is vulnerable to interference from surrounding traffic lights, greening, etc., which improves the detection performance, makes the visibility detection results more accurate, and improves the detection accuracy

Images