Virtual positioning method for optical multiple-parameter measurement

Abstract

The invention discloses a virtual positioning method in optical multi-dimensional parameter measurement, which is applied to an optical measurement system composed of a two-dimensional visual sensor and an area array CCD camera, using a hollow regular tetrahedron as the target of the visual sensor to realize The steps of virtual positioning are: after measurement and calculation, determine a standard triangle on the hollow regular tetrahedron and draw it on the screen, which represents the ideal position of the visual sensor relative to the measured edge; The triangle formed by the light strips on the three edges of the hollow regular tetrahedron represents the actual position of the visual sensor relative to the measured edge; adjust the orientation and coordinates of the visual sensor so that the triangle represented by the light strips represents the actual position and the triangle represents the ideal position At this time, the orientation and coordinates of the vision sensor are determined as its measurement location. Compared with the traditional digital adjustment method, the present invention is intuitive, convenient and has high precision.

Description

technical field [0001] The invention relates to a virtual positioning method in optical multi-dimensional parameter measurement. It belongs to the image positioning technology when the optical method is used to measure the shape of multi-dimensional parameters. Background technique [0002] The measurement of the overall error of the automobile body is an important research topic in the domestic and foreign automobile industries. In 1992, the U.S. government funded 5 million US dollars to jointly develop the project by the University of Michigan and Perceptron Corporation. Although the project has achieved important application results, due to the complex shape of the car body and many points, lines, and surfaces with six-dimensional parameter characteristics, how to detect the white car actually assembled in the production line without a standard car body as a comparison? The overall error of the body is a very big technical problem. [0003...

AI Technical Summary

Problems solved by technology

Although the project has achieved important application results, due to the complex shape of the car body and many points, lines, and surfaces with six-dimensional parameter characteristics, how to detect the white car actually assembled in the production line without a standard car body as a comparison? The overall error of the body is a big technical problem

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