Height measurement method and measurement device thereof

Abstract

The embodiment of the invention discloses a body height measuring method and a measuring device thereof, wherein, the method comprises the following steps: the position of a human body is detected, the judgment of whether the position of the human body enters a preset range or not is carried out; if yes, a human body video image is collected; a human face image is detected from the human body video image, the best human face image is obtained; and the body height is determined according to the best human face image. The implementation of the embodiment of the invention carries out the measurement of the body height based on the video human face image, a certain range is preset against people groups with the specific body height in an entrance channel under the situation of not changing the prior fixed facilities of the entrance channel, thereby facilitating the accurate calculation of the body height.

Description

technical field [0001] The invention relates to the field of human body height measurement, in particular to a screening method and implementation device for people with specific heights on a fare collection system. Background technique [0002] Rail transit is increasingly becoming an important part of urban passenger transport. Automatic Fare Collection (AFC) is one of the core systems of rail transit, and gates are an important module to realize automatic fare collection. The shortcoming of the current automatic ticket checking system is that there is no good measurement method for the height of free-ticket and half-ticket children, and the regulations on the height of free-ticket and half-ticket children are not the same in different cities. Most of the existing turnstiles use transmission-type photocell sensors to detect the height of pedestrians. This method of detecting height has the following three constraints: [0003] (1) Considering factors such as the cost of t...

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Problems solved by technology

[0004] (2) Even if the installation height of the photoelectric cell can exceed 1.1 meters, its position is fixed, but the average height of children will increase with the improvement of the quality of life, and the regulations on the height of children's tickets will also change with local regulations. Use photoelectric cells Height detection needs to change the shape design of the equipment to meet various requirements, and if the actual height of the gate is too high, it will make people feel depressed in the gate passage

[0005] (3) The installation density of photoelectric cells determines the measurement accuracy. If you want to improve the height measurement accuracy, the cost will increase accordingly

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