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In thermal infrared images, although the image quality is poor, and the body shape and gait of the human body are different, resulting in relatively large changes in human body contours, compared with non-human objects such as cars, roads, animals, and trees, they still have certain common characteristics. It provides a basis for realizing human body recognition by using contour features.


Human body contours can generally be described using shape and shape features (such as boundary length, curvature, Fourier descriptor, shape internal area, etc.). The thermal infrared human body based on the contour shape feature of the human body is described below. Target recognition method.