Vehicle headlamp irradiation angle detection method, device and system based on vertical face
A technology of illumination angle and headlights, which is applied in the direction of testing the alignment of automobile headlights, testing optical performance, etc., can solve a lot of labor costs and other problems, and achieve the effects of saving detection costs, improving accuracy, and saving costs
Active Publication Date: 2014-07-30
NEUSOFT REACH AUTOMOTIVE TECH SHANGHAI CO LTD
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Problems solved by technology
[0005] In view of the rapid increase in the number of vehicles, the existing methods require a lot of labor costs, are limited to specific environments, and detection equipment, and are difficult to meet the increasing needs of vehicle headlight detection. Light irradiation angle detection method, device and system to reduce requirements on the environment and personnel in the detection process
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[0036] In order to make the above objects, features and advantages of the present invention more clearly understood, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.
[0037] The invention provides a method for detecting the illumination angle of vehicle headlights based on facade, which utilizes a vehicle-mounted front-view camera to automatically complete the detection of the headlights when the vehicle is parked. For the implementation steps of this method, see figure 1 ,Specifically:
[0038] 11. Obtain the illumination image of the vehicle headlamp on the facade, and the photographing direction of the illumination image is the same as the illumination direction of the vehicle headlamp;
[0039] 12. Using the image processing algorithm, detect the position of the headlamp beam feature in the illumination image, and obtain the detection result including the coordinates o...
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The invention discloses a vehicle headlamp irradiation angle detection method, device and system based on the vertical face. According to the vehicle headlamp irradiation angle detection method, device and system based on the vertical face, the irradiation image of a vehicle headlamp on the vertical face is obtained by means of a vehicle-mounted front visual angle camera, a detection result including the coordinates of the light beam features of the headlamp on the irradiation image is obtained by means of the image processing algorithm, the direction vector from the origin of the world coordinate system of the headlamp to the light spot formed after the light beam features of the headlamp irradiate on the vertical face is calculated according to the detection result, and headlamp irradiation angle detection is accomplished automatically according to the direction vector from the origin of the world coordinate system of the headlamp to the light spot formed after the light beam features of the headlamp irradiate on the vertical face. Compared with the prior art, the method has the advantage that the method is not limited to specific environment and equipment requirements of a vehicle detection station. Compared with the manual naked-eye adjustment method, the method has the advantage that the accuracy of vehicle headlamp irradiation angle detection is higher.
Description
[0001] The patent application of the present invention is a divisional application of a Chinese invention patent application with an application date of June 20, 2012, an application number of 201210206203.7, and the title of "Facade-based vehicle headlamp illumination angle detection method, device and system". technical field [0002] The invention relates to the field of vehicle headlamp detection, in particular to a method, device and system for realizing the detection of the illumination angle of vehicle headlamps. Background technique [0003] The function of vehicle headlamps is to provide illumination for vehicle drivers at night or other low visibility conditions, and to prevent headlamps from dazzling drivers and passersby. In order to meet the above requirements, the vehicle headlights are equipped with two working modes: low beam and high beam. When there is no oncoming vehicle in front or not following other vehicles, high beam lighting is used, and low beam ligh...
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Inventor 刘威于红绯袁淮
Owner NEUSOFT REACH AUTOMOTIVE TECH SHANGHAI CO LTD