Computer-vision-based system and method for detecting number of pedestrians waiting to cross crosswalk

Abstract

The invention relates to a computer-vision-based system and method for detecting the number of pedestrians waiting to cross a crosswalk. The system comprises two charge coupled device (CCD) cameras and a computer image processing system, wherein the computer image processing system is connected with the cameras through interfaces; the two CCD cameras are arranged at two ends of the crosswalk; and field angles of the two CCD cameras cover an opposite pedestrian waiting region and a diagonally opposite vehicle region. The method comprises the following steps of: acquiring an image from a video image; preprocessing the pedestrian waiting region; acquiring a foreground image by using a Gaussian mixed background model method; acquiring a vertical integral projection graph; and processing the vertical integral projection graph, and performing information statistics to obtain the number of the pedestrians waiting to cross the crosswalk. Compared with a conventional pedestrian number detection method, the method has the advantages of simplicity and high efficiency, and can be applied to a complicated situation.

Description

technical field [0001] The invention relates to the technical field of computer vision, in particular to a method for detecting the number of pedestrians waiting to pass in a crosswalk based on computer vision. Background technique [0002] At present, in the field of intelligent transportation and computer vision, the detection and analysis of pedestrians is an important part. Pedestrian detection and analysis technology has been studied for more than ten years, but there is still no standard, accurate, high-performance, and real-time pedestrian detection and analysis algorithm. Due to some inherent characteristics of pedestrians, the complexity of application scenarios, and the interaction between people or people and the environment, the detection and analysis of pedestrians is the most difficult challenge in the field of computer vision research. [0003] In the past ten years, many existing detection methods have been produced when pedestrian detection technology has r...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the existing head detection method is not suitable for pedestrian detection in a complex environment, the present invention provides a detection method for the number of pedestrians waiting to cross a crosswalk, which can not only detect the number of pedestrians more accurately, but also is simple and effective , can be applied to more complex environments

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