Parking lot parking space identification method based on image similar degree

Abstract

The invention belongs to the field of image processing, and particularly relates to a parking lot parking space identification method based on an image similar degree. The method puts forward a parking space state discrimination index Y, and an image perception Hash technology is organically combined with a structure similarity method to finish parking space state identification. The method specifically comprises the specific processes that: carrying out parking space image collection, image enhancement, image correction and target region division, carrying out Gabor filtering processing on animage, extracting the textural feature map of the image, carrying out Hash processing on the image to obtain a Hamming distance h, carrying out structure similarity operation on the image to obtain an image structure similarity p, calculating the parking space state discrimination index Y, and finally, comparing the discrimination index Y obtained by calculation with a set threshold value w so asto finish identifying the parking space state. By use of the method, an adverse effect of an external condition (illumination changes and snowfall weather) for a parking space state identification result in the prior art is solved, and the method has high objectivity and universality.

Description

technical field [0001] The invention belongs to the field of image processing, in particular to a parking space recognition method based on image similarity. Background technique [0002] At present, the detection methods of parking spaces in parking lots mainly include non-video detection and video detection. Non-video detection methods include induction coil detection, acoustic wave detection, infrared detection, and detection based on RFID (Radio Frequency Identification, radio frequency identification) technology. Since the installation of sensors requires changes to the surface of the parking lot, the installation is difficult and costly. , greatly increasing the difficulty of maintenance and repair. The method based on video detection is more widely used in daily life. From the perspective of vehicle and personnel safety management, almost all parking lots will be installed with cameras for monitoring. It can be seen that the method of video detection of parking space...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: for outdoor and open-air parking lots, when the lighting conditions change (there is a shadow on the parking space) and when it is snowing, a parking space recognition method based on image similarity is proposed, which can accurately Identify the status of parking spaces in the parking lot, which can solve the adverse effects of external conditions (light and snowfall) on the recognition results of parking spaces

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