Pedestrian group behavior recognition method and device

Abstract

The invention discloses a pedestrian group behavior recognition method and device, belonging to the field of computer vision. The method includes acquiring an image sequence to be identified; acquiring a motion trajectory of a pedestrian according to the image sequence; acquiring the gait cycle information of the pedestrian according to the motion trajectory, and the gait cycle information is that A collection of gait cycles in each segment of the trajectory; constructing a feature vector corresponding to the speed change information of the pedestrian according to the gait cycle information; identifying the group behavior of pedestrians in the image sequence according to the feature vector ; It solves the problem that the existing partial group behavior recognition method is difficult to accurately recognize complex pedestrian group behavior; it achieves the effect of improving the accuracy of pedestrian group behavior recognition.

Description

technical field [0001] Embodiments of the present invention relate to the field of computer vision, and in particular to a method and device for identifying group behaviors of pedestrians. Background technique [0002] Pedestrian group behavior recognition technology has a wide range of applications in intelligent video surveillance, human-computer interaction, abnormal event monitoring, etc. Pedestrian group behavior recognition mainly identifies The group behavior that the target is engaged in. [0003] In related technologies, the local group behavior recognition method is generally used when identifying the pedestrian group behavior among small-scale targets. The existing local group pedestrian recognition method extracts the complete foreground sequence of the individual target in the output image sequence , according to the complete foreground sequence of the extracted individual target, the group behavior of pedestrians is recognized. [0004] In the process of real...

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Problems solved by technology

[0004] In the process of realizing the present invention, the inventor found that the prior art has at least the following problems: the existing partial group behavior recognition method is difficult to accurately identify complex pedestrian group behavior, such as: the existing partial group behavior recognition method It can accurately identify simple pedestrian group behaviors such as "intersection" and "separation", but cannot accurately distinguish complex pedestrian group behaviors such as "walking intersection" and "walking and then running intersection"

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