Method and system for recognizing nights pedestrian based on thermal infrared gait

Abstract

The invention discloses a night pedestrian identification method and a system thereof based on thermal infrared gait. The steps of the method comprise detecting and dividing the pedestrian from infrared video images to obtain image sequences of the thermal infrared gait, employing an average gray image to describe videos of the thermal infrared gait to obtain features of the thermal infrared gait and identifying the thermal infrared gait of the pedestrian in the thermal infrared video images, based on a nearest neighbor classifier and taking the average gray image as the description of identity. The system comprises an acquisition module of the thermal infrared video images and an analysis processing module for the infrared images. Experiments on a CASIA night infrared gait data bank and an NLPR day visible light modal gait data bank prove that the invention has effectiveness for identification of the night pedestrian and strong identification ability of gait representation mode. The invention is applied to security monitoring of special occasions.

Description

technical field [0001] The invention belongs to the application field of pattern recognition, and relates to digital image processing, computer vision and pattern recognition technology for biological characteristics of gait. Background technique [0002] Gait means the way a person walks. In a broad sense, gait contains both dynamic information during pedestrian movement and static information of human body shape. Early psychophysical and medical gait analysis results proved that gait contains rich individual characteristics and is unique to an individual, so it can be used for identification. [0003] After the September 11 terrorist attacks in the United States, the governments and people of various countries have a stronger demand for security than ever before. Traditional human-intensive surveillance systems have some limitations: [0004] ① requires the staff to maintain a high degree of concentration for a long time; [0005] ②Monitoring of a large amount of real-...

AI Technical Summary

Problems solved by technology

[0028] The existing technology is aimed at the identification of pedestrians in the daytime under the visible light mode. The gait recognition algorithm has high computational complexity and low computational efficiency, and cannot be used in occasions with high real-time requirements. In order to solve the problems of the existing technology, the purpose of the present invention It is a night pedestrian recognition method and system based on thermal infrared gait, which provides gait recognition algorithm with simple calculation, high calculation efficiency, and can be used in occasions with high real-time requirements.

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