Forward Intersection Measurement Method and System Based on Vision System Structural Parameters

Abstract

The present invention provides a forward intersection measurement method and system based on visual system structural parameters. The method includes: expressing the vector of the main target point when the carrier is located in the actual position in the world coordinate system; Determine the fitting function between the focal length and the intersection distance; express each image point to be measured after the stereo field error correction in the world coordinate system; perform forward intersection measurement on the point to be measured, and obtain the position of the point to be measured in the world coordinate system coordinate value. The forward intersection measurement method and system based on the structural parameters of the visual system provided by the present invention establishes a world coordinate system according to the structural parameters of the visual system without the need for a forward control point, and performs forward intersection measurement on the points to be measured, on the basis of linear space analysis In terms of innovation, the method of measuring the forward intersection space point based on the structural parameters of the vision system was innovated to achieve more accurate photogrammetry of the point to be measured.

Description

technical field [0001] The invention relates to the technical field of digital photogrammetry, in particular to a method and system for intersection measurement based on visual system structural parameters. Background technique [0002] With the expansion of the application requirements of machine vision technology and AI technology in the field of precision agriculture, in the automation and intelligent operation of agriculture and other industries, the demand for high-precision, non-control point measurement is getting higher and higher. [0003] Forward intersection photogrammetry based on monocular or multi-eye cameras generally requires control points or other sensor-assisted measurements. However, on the one hand, there are usually no conditions for ideal target setting in agriculture or other real-life scenarios. On the other hand, the use of other sensors is not only expensive, but also the environmental conditions of the scene limit the application scenarios and mea...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a forward intersection measurement method and system based on the structural parameters of the visual system, which is used to solve the defect that it is difficult to accurately obtain the position of the point to be measured in the absence of a control point in the prior art, and realize the measurement without control. In the case of a point, the position of the point to be measured can be obtained more accurately based on the structural parameters of the vision system

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