Body height measurement method and body height measurement device based on depth camera

Abstract

The invention discloses a body height measurement method and a body height measurement device based on a depth camera. The body height measurement method comprises the steps of acquiring a depth image of a scene through the depth camera; performing identification in the depth image according to preset human body characteristic parameters, and determining a human body target in the depth image; according to the position of the human body target in the depth image, determining a first image coordinate of an upper end point of the human body target in the depth image and a second image coordinate of a lower end point of the human body target in the depth image; calculating a first three-dimensional coordinate which corresponds with the first image coordinate and a second three-dimensional coordinate that corresponds with the second image coordinate according to the first image coordinate, the second image coordinate, depth-of-field information and a preset camera calibration parameter; and determining the height of the human body target according to the first three-dimensional coordinate and the second three-dimensional coordinate. The body height measurement method and the body height measurement device settle technical problems of complex mounting operation and low body height measurement precision caused by artificial calibration on a mounting height and a mounting angle in mounting the depth camera.

Description

technical field [0001] The present invention relates to the field of image processing, in particular to a height measurement method and device based on a depth camera. Background technique [0002] At present, height, as an important characteristic of the human body, can be seen everywhere in daily life, for example, height measurement in hospital physical examination, measurement of children's height during basic traffic ticket inspection, measurement of children's height at the ticket gate at the entrance of scenic spots, and verification of personal height information Wait. The traditional height measurement method is generally to measure the height one by one through scale tools or measuring equipment. In the case of dense crowds, measuring the height with the above method is slow and inefficient, and cannot meet the needs. Therefore, the height measurement method based on the video image is widely used. The above method can simultaneously measure the height of multipl...

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a height measurement method and device based on a depth camera, to at least solve the cumbersome installation operation and poor height measurement accuracy due to the need to manually calibrate the installation height and installation angle when installing the depth camera technical issues

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