Forward intersection measurement method and system based on visual system structure parameters

Abstract

The invention provides a forward intersection measurement method and system based on visual system structure parameters. The method comprises the following steps: expressing a main target point vector when a vector is located at an actual position in a world coordinate system; determining a fitting function between the focal length and the focal tangent distance; expressing each to-be-measured image point after the three-dimensional field error correction in the world coordinate system; and performing forward intersection measurement on the to-be-measured point to obtain a coordinate value of the to-be-measured point in the world coordinate system. According to the forward intersection measurement method and system based on the visual system structure parameters, the world coordinate system is established according to the visual system structure parameters without a forward control point, forward intersection measurement is carried out on the to-be-measured point, on the basis of linear space analysis, the method for measuring the forward intersection space point based on the visual system structure parameters is innovated, and more accurate photogrammetry of the to-be-measured point is achieved.

Description

Technical field [0001] The present invention relates to the field of digital photogrammetry technology, particularly to a method and system for measuring front intersection based vision system configuration parameters. Background technique [0002] With the expansion of applications of machine vision technology and sophisticated AI technology in the agricultural sector, in agriculture and other sectors of automation intelligence operations, high precision, no control point measurement of demand higher and higher. [0003] Based front intersection photogrammetry monocular camera or mesh control points typically require auxiliary sensors, or other measure. However, on the one hand in agriculture or other real-life scenarios condition is not usually provided over the target, on the other hand not only aid other sensors using high cost equipment, environmental conditions, and also limits the application scene scene vision systems and measurement accuracy. In summary, the position of ...

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

Images