Motion pedestrian representation method, identification method and motion pedestrian identification device

Abstract

Provided are a motion pedestrian identification method and a device. A video camera shooting direction is taken as a z axis, a pedestrian height direction is taken as a y axis, a plane perpendicular to the ground is taken as an xy axis plane, and then an xyz rectangular coordinate system is established. The motion pedestrian identification method comprises obtaining a candidate pedestrian contour of a time sequence form a depth map of the time sequence, obtaining at least one of x-direction distance distribution, y-direction distance distribution and z-direction distance distribution of the candidate pedestrian contour of the time sequence on the basis of the candidate pedestrian contour of the time sequence, and judging whether a candidate pedestrian contour is belonged to a pedestrian on the basis of at least one of all directions of the candidate pedestrian contour of the time sequence. The distance distribution of a pedestrian contour in all the directions is basically only related to body characteristics and walking characteristic of a person, so the pedestrian contour is unlikely to be influenced by external environment and is suitable for pedestrian identification, the pedestrian can be identified rapidly, and the real-time requirement of many applications of, for example, a vehicle driving assistance system is fitted.

Description

technical field [0001] The present invention relates to depth image processing, and more particularly relates to a moving pedestrian representation method, a recognition method and a device thereof in computer vision technology. Background technique [0002] Pedestrian recognition is an essential and important function in driver assistance systems and vehicle automatic navigation systems. The detection and recognition of moving pedestrians plays an important role in reducing traffic accidents and driving safety. In many scenarios, such as when someone is crossing the road, or when pedestrians are walking toward or away from the vehicle, or suddenly appear in the driver's field of vision, the rapid detection and recognition of pedestrians is very important for the safety of pedestrians and drivers. is an important question. [0003] The current pedestrian recognition technology is mainly based on grayscale / color images for pedestrian feature extraction and classifier traini...

AI Technical Summary

Problems solved by technology

[0006] Generally, there are various poses of various pedestrians, and using grayscale / color images to model the various poses of pedestrians requires a large number of training samples and complex training, and in practical applications, the recognition rate may not meet the actual Application Requirements Questions

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