A parking space identification method and device using a laser light knife as an auxiliary light source

Abstract

A parking space recognition method and device using a laser light knife as an auxiliary light source. The device is composed of a laser light knife, a camera, a computer and a display device. When detection is required, the computer first issues a control command and uses the laser light knife to emit a fan-shaped beam. The beam is projected on A straight line light beam across the entire row of parking spaces is formed on the entire row of parking spaces to be tested; the beam image formed by the laser light knife in each parking space is collected by the camera, if the formed image is a straight line, the parking space is empty; if the formed image is An arc above the straight line indicates that there is a car in the parking space. A set of equipment in the present invention can detect a row of parking spaces. The image processing algorithm is simple and reliable, and at the same time reduces the requirement for lighting conditions. Even in a completely dark underground parking lot, it can be detected normally. .

Description

technical field [0001] The invention belongs to the technical field of position recognition, and in particular relates to a parking space recognition method and device using a laser light knife as an auxiliary light source. Background technique [0002] The automatic identification of empty parking spaces in the parking lot can improve the efficiency of parking lot management. At present, a variety of empty parking space identification methods have been applied. The commonly used methods are ultrasonic distance measurement and image recognition. The ultrasonic distance measuring method is to install an ultrasonic ranging probe above each parking space, and judge whether there is a vehicle parked under the probe by measuring the distance. The image recognition method uses a camera to capture an image and judges whether it is an empty parking space through digital image processing. This method can identify multiple parking spaces through a camera. The disadvantage is that the ...

AI Technical Summary

Problems solved by technology

The ultrasonic ranging method is to install an ultrasonic ranging probe above each parking space, and judge whether there is a vehicle parked under the probe by measuring the distance. This method is simple and reliable. The disadvantage is that an ultrasonic probe is required to be installed above each parking space.

The image recognition method uses a camera to capture an image and judges whether it is an empty parking space through digital image processing. This method can identify multiple parking spaces through a camera. The disadvantage is that the image processing algorithm is relatively complicated, and it also needs to meet certain lighting conditions.

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