Distance and height determination method and device based on multiple sensors

Abstract

The invention provides a distance and height determining method and device based on multiple sensors. The distance and height determining method and device are used for determining whether a detected object takes drugs or not based on pupil images. The method comprises the following steps: respectively measuring a first distance to a third distance between a measured object and a security check device by using a first sensor to a third sensor; measuring the first height to the third height of the measured object; respectively determining a size relationship between each of the first to third distances and a minimum distance threshold and a maximum distance threshold by using a first determination unit; determining the final distance between the detected object and the security check device and the final height of the detected object by using a second determination unit based on the size relationship between each of the determined first distance to the third distance and the minimum distance threshold and the maximum distance threshold; and according to the determined final distance and the final height, carrying out pixel-size conversion on the pupil image of the detected object so as to determine whether the detected object takes drugs or not.

Description

technical field [0001] The present disclosure relates to the field of security inspection, and more particularly relates to a method for determining distance and height based on multiple sensors, an electronic device, and a computer-readable storage medium. Background technique [0002] For a long time, in the drug investigation work, the routine testing methods for checking whether suspects have taken drugs include urine, blood or saliva testing. However, since the above inspection must go through many links such as sampling under supervision, it often takes a lot of time, manpower, and material resources, and the inspection results are also easily disturbed, resulting in false negatives and false positives. In addition, there are many kinds of drugs, and the need to use urine test strips one by one will increase the use of urine test strips and increase the cost, so it is not suitable for extensive screening. In addition, in recent years, some drug addicts have adopted sp...

AI Technical Summary

Problems solved by technology

[0005] At present, the long-distance pupil size estimation method based on video image processing is immature, especially the distance measurement is not accurate, especially when the height of the measured person (1.5 meters to 2.1 meters) fluctuates greatly

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