Monocular real-time distance measurement method based on target pixel area and aspect ratio

Abstract

The invention relates to a monocular real-time distance measurement method based on a target pixel area and an aspect ratio. The method comprises the following four parts: an ssd model is adopted to realize detection processing of a target, and accurate framing is realized; performing parameter calibration on the camera, obtaining internal parameters and image resolution of the camera, and based on the width and height of target detection, solving a pixel area and width-height ratio of a target object; monocular distance measurement at multiple angles and different distances is realized through the relationship between the pixel area and the distance of target detection and the characteristic of the aspect ratio of a specific target pixel; due to instability of target detection, Kalman filtering is introduced in the real-time distance measurement process, and the stability of real-time distance measurement is improved. Aiming at different imaging at different angles and instability ofreal-time target detection, the distance measurement method based on the target pixel area and the aspect ratio is provided, and the the Kalman filtering method is introduced so that the applicabilityof multi-angle distance measurement is improved, and the stability of real-time moving target distance measurement is improved.

Description

technical field [0001] The invention relates to the field of image processing and ranging, in particular to a monocular real-time ranging method based on target pixel area and aspect ratio. Background technique [0002] In places where manpower cannot directly work, such as dangerous places such as high temperature and high radiation operations, and remote places such as space and the universe, the use of image acquisition equipment for long-distance, non-contact ranging systems can monitor these complex environments and make decisions. corresponding work instructions. Establish a connection between the research object and the relevant environment through computer technology, and provide corresponding reference for the user's work. At present, the applications of visual ranging are mainly in the fields of robot arm grasping, positioning, industrial robot detection, aerial surveying and mapping, intelligent traffic monitoring, reverse engineering, target recognition, militar...

AI Technical Summary

Problems solved by technology

The monocular vision measurement method is to use only one visual imaging device to collect images, and measure the geometric size of the target, the position of the target in space, the posture and other information. However, due to the incomplete acquisition of monocular vision information, the angle of the target is More changes in actual exercise

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