Method for measuring attitude of target space with parallel line features

Abstract

The invention relates to a method for measuring the attitude of a target space with parallel line features. Existing measuring methods have the problems of arrangement of cooperative marking points ona straight line, complicated measuring steps, complex measuring instrument and expensive device. The method comprises the following steps: 1) establishing a measurement system; 2) calibrating a linelaser plane equation; 3) calculating the spatial direction vector of a straight line of the line laser irradiated onto the surface of an object to be measured; 4) calculating the expression of a target space of the parallel line features pointing in a camera coordinate system; and 5) solving the attitude angle and the azimuth angle by the rotation transformation of the coordinate system. The method can directly use the parallel line features of the surface of the measured target object without arranging the cooperative marking points on the target, and allows the three-dimensional attitude information of the measured target object in the space to be obtained without an expensive three-dimensional coordinate measuring instrument, so the method has the advantages of convenience in arranginga measuring system, low cost, and simple measuring steps.

Description

technical field [0001] The invention relates to the technical field of optical measurement, in particular to a method for measuring the spatial attitude of an object with parallel line characteristics. Background technique [0002] In the field of precision measurement, intelligent automatic assembly, and attitude angle measurement, it often involves the measurement of the spatial attitude of the object to be measured, such as the installation direction error measurement of steel beams in construction engineering, and the assembly error detection of strip structural parts in precision instrument assembly (such as motion guide rail), cube base attitude measurement, etc. For the attitude detection of this kind of target space with the characteristics of parallel straight lines, two mark points are usually set on the two parallel straight lines respectively, and space coordinate measuring instruments are used, such as binocular measurement system, three-coordinate measuring ins...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems that the existing measurement methods must set cooperative mark points on the straight line, the measurement steps are complicated, the measuring instruments are complicated, and the equipment is expensive, and to provide a method for measuring the spatial attitude of the target with the characteristics of parallel lines

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