Structured light 3D scanning measurement device and method

Abstract

The invention discloses a structured light 3D scanning measurement device and method. The device comprises an optical projector arranged on a projection frame, a reflection mirror, a projection frame, and a measurement target. The optical projector can output projection light. The light out direction of the optical projector just faces the reflection surface of the reflection mirror. The light out direction of the optical projector is fixed. The reflection mirror is arranged on the projection frame and comprises a reflection surface. The projection light of the optical projector is skewed to the reflection surface of the reflection mirror. The reflection surface of the reflection mirror reflects the projection light of the optical projector to the surface of the measurement target. The projection frame is arranged far from the measurement target and is fixedly connected to the optical projector and the reflection mirror. The distance from the projection frame to the measurement target is known. The measurement target receives the projection light reflected by the reflection mirror and carries out diffuse reflection.

Description

Technical field [0001] The invention relates to optical measurement technology, in particular to a structured light three-dimensional scanning measurement device and method. Background technique [0002] The structured light three-dimensional vision measurement technology in the prior art refers to the use of an optical projector to replace one of the cameras in the binocular stereo vision measurement, and the optical projector generates certain light patterns, such as light planes, cross light planes, and nets. Lattice beams, etc., constrain the spatial position of the scene object, so that the three-dimensional coordinates of the selected point on the scene object are obtained. [0003] Conventional structured lights, such as grid lattices, gratings, projection lines, etc., cannot be effectively adjusted according to changes in imaging distance and range, making structured lights difficult to effectively apply to long-distance indoor or outdoor environments. The general projecti...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the length of the projection line cannot be continuously adjusted and the projected energy is ineffectively lost in the prior art, the purpose of the present invention is to propose a structured light three-dimensional scanning measurement device and method, which can continuously adjust the length of the projection line according to the needs of the scene without requiring many Replace the filter at one time; at the same time, the projection energy is no longer lost when adjusting the length of the projection line, which enhances the imaging capability

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