Height measurement method and apparatus

Abstract

The invention discloses a height measurement method and apparatus. The height measurement method is realized based on a depth camera, and in particular, the depth camera is adopted to acquire the multi-frames of background depth pictures that are converted into multi-frames of background point cloud images, by means of the multi-frames of background point cloud images, and through the background model extraction, the foreground image extraction, the foreground image edge information extraction, the default template matching and the calculation of the world coordinates and the height to be measured, the height of the object to be measured in each frame of image can be obtained, so that the aim of non-contact height measurement is realized; and moreover, the height measurement method has good generalization and good robustness, can realize the all-weather height measurement, and does not need the calibration process before and after the application of the depth camera, and has no risk of personal information leakage.

Description

Technical field [0001] This application relates to the field of computer vision technology, and more specifically, to a height measurement method and device. Background technique [0002] In production and life, height measurement is very common. For example, when a child grows up, height is an important parameter to measure whether a child’s growth and development is normal; for example, in various interviews and physical examinations, height is used as a measure of a person’s body Important parameters. [0003] The traditional measurement method of height and other height is still contact measurement, such as height measurement using calipers or ultrasound; contact measurement requires the cooperation of the measured object, and can only measure a single measured object at the same time; patented in China CN104173054A discloses a human body height measurement method based on binocular vision, which can realize non-contact measurement of multiple persons, but the human body heigh...

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Problems solved by technology

[0003] The traditional method of measuring height such as height is still contact measurement, such as using calipers or ultrasonic waves for height measurement; contact measurement requires the cooperation of the measured object, and only a single measured object can be measured at the same time; patented in China CN104173054A discloses a method for measuring human body height based on binocular vision, which can realize non-contact measurement of multiple people, but the method for measuring human body height disclosed in this patent requires complex parameter calibration and calibration of two cameras. input, which greatly reduces the user-friendliness and generalizability of the scheme; in addition, the scheme relies on visible light and binocular vision, and is very sensitive to light and distance changes. When the light and distance change, the measurement results will also change greatly. changes, making the scheme less robust

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