Three-dimensional motion measurement system based on digital image measurement

Abstract

The invention relates to a three-dimensional motion measurement system based on digital image measurement. The system comprises a center control computer, a three-dimensional denoter, a first camera and a second camera. The three-dimensional denoter comprises a two-dimensional plane denoter and a single-sided mirror, wherein the two-dimensional plane denoter is used for being attached to the corresponding position of a target object, and the mirror surface of the single-sided mirror and the two-dimensional plane denoter are opposite and form an included angle of 45 degrees. The first camera measures motion of the two-dimensional plane denoter through the single-sided mirror, and the second camera measures the motion of imaging of the two-dimensional plane denoter in the single-sided mirror. The center control computer is in communication connection with the first camera and the second camera, and calculates three-dimensional motion of a target point according to the measurement results of the first camera and the second camera. The system simplifies installation and debugging process of the measurement site, and meanwhile, greatly improves measurement precision.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional motion measurement of targets, in particular to the technical field of three-dimensional dynamic measurement for engineering buildings (structures), and specifically relates to a three-dimensional motion measurement system based on digital image measurement. Background technique [0002] With the continuous development of science and technology, motion detection and measurement equipment used in fields such as agriculture, medical treatment, industry, transportation and military require higher and higher precision and intelligence. Three-dimensional motion measurement has been greatly developed in various fields, and has been widely used in three-dimensional motions such as building structures, machinery, electronics industry, traffic monitoring, sports, and virtual reality. [0003] With the continuous upgrading of digital equipment, the resolution of the camera used to collect images c...

AI Technical Summary

Problems solved by technology

However, since the motion of most objects in reality is in the three-dimensional state, if the three-dimensional motion of a point is simply represented by two orthogonal two-dimensional motions, the error is relatively large, which is due to the high The high-precision image measurement method can only measure in-plane motion. For three-dimensional measurement, an orthogonal plane needs to be added. The displacement measured by the two planes is not the displacement of the same point. The two are simply regarded as the three-dimensional motion of a point. It will bring errors, which greatly reduces the accuracy of digital image measurement

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