Miniature light guide 3D information acquisition device

Abstract

The invention provides a miniature light guide 3D information acquisition device, which comprises a shell, a plurality of optical structures and a light guide structure, the plurality of optical structures are distributed on the shell; the plurality of optical structures are respectively and optically connected with one ends of the plurality of light guide structures; the plurality of light guidestructures are arranged in the shell; at least part of the light guide structure is directly or indirectly in optical connection with the image acquisition device. Multi-angle acquisition is realizedthrough multiple light guides for the first time, so that the requirement of small space is met, and the special requirement of 3D acquisition can also be met. The optical structure is arranged at thehead of the light guide, so that the 3D acquisition quality is optimized, and the synthesis speed and the synthesis precision are improved.

Description

technical field [0001] The invention relates to the technical field of shape measurement, in particular to the technical field of 3D shape measurement. Background technique [0002] When performing 3D measurement, 3D information needs to be collected first. The currently commonly used methods include using machine vision to collect pictures of objects from different angles, and matching and splicing these pictures to form a 3D model. When collecting pictures from different angles, multiple cameras can be set at different angles of the object to be tested, and pictures can also be collected from different angles by rotating a single or multiple cameras. But no matter which of these two methods has a large volume, it is difficult to use them in occasions with small spaces, such as various small pipeline cavities. This is due to the impossibility of fitting a huge camera into the lumen of the pipe, and having to turn or move to take pictures. [0003] At present, there are a...

AI Technical Summary

Problems solved by technology

2D acquisition only needs to obtain a clear and complete image, while 3D acquisition has more unique requirements, which cannot be achieved with the optical fiber in the 2D acquisition device alone

However, in practical applications, it is found that unless there is an accurate angle measurement device, the user is not sensitive to the angle, and it is difficult to determine the angle accurately; the size of the target object is difficult to accurately determine, especially in some applications where the target object needs to be replaced frequently. A lot of extra work is required, and professional equipment is required to accurately measure irregular targets

Measurement errors lead to camera position setting errors, which will affect the speed and effect of acquisition and synthesis; the accuracy and speed need to be further improved

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