Single-camera three-dimensional image measuring instrument

Abstract

The invention relates to a single-camera three-dimensional image measuring instrument which comprises the components of a transparent object carrying platform which is used for carrying a to-be-measured object; a camera device which is configured for photographing the image of the to-be-measured object; and an optical path turning device which comprises a plurality of lenses with reflecting function and / or transmitting function, thereby transmitting the bottom surface image and the side surface images of the to-be-measured object to the camera device through a first optical path and a second optical path. The single-camera three-dimensional image measuring instrument can realize three-dimensional image acquisition of the to-be-measured object and furthermore performs functions of reducing number of camera devices and saving a complicated motion mechanism, thereby simplifying structure of the single-camera three-dimensional image measuring instrument and greatly reducing cost. Furthermore because the camera device according to the single-camera three-dimensional image measuring instrument does not require large-range movement, image acquisition efficiency of the single-camera three-dimensional image measuring instrument is improved.

Description

technical field [0001] The invention relates to image acquisition and measurement technology, in particular to a single-camera three-dimensional image measuring instrument. Background technique [0002] Existing image measuring instruments generally can only do two-dimensional image size measurement, and the measurement technology for three-dimensional space size is still immature. At present, there are roughly three traditional methods that can realize 3D image measurement: the first method is to collect images of multiple sides of objects by setting multiple cameras correspondingly. The structure of this image measuring instrument is quite complicated, the volume is large, and the cost is high. The second way is to set up a single camera and move the camera to different positions to collect images of different sides of the object; or add a contact sensor to the ordinary two-dimensional image measuring instrument to achieve another dimension of measurement. The structure ...

AI Technical Summary

Problems solved by technology

However, prior to the present invention, various lens installation methods in the prior art could not well meet the higher shape and position accuracy requirements of the lenses in the image measuring instrument.

It can be said that providing an appropriate installation method for the lens in the image measuring instrument that can ensure its high shape and position accuracy is a technical problem that those skilled in the art have been eager to solve for a long time but have not been successfully solved.

[0004] In addition, bumps, vibrations, etc. during the transportation of the image measuring instrument may also adversely affect the shape and position accuracy of the lens, and may even cause the lens to break

Therefore, in the existing technology, the lens is usually installed on the image measuring instrument after the image measuring instrument is transported to the destination (such as the customer's site). Not only is the installation process complicated, the operation is difficult, but also the after-sales labor cost is high.

It can be said that providing an appropriate installation method for the lens in the image measuring instrument to avoid its deformation, displacement or cracking during transportation has always been a technical problem that those skilled in the art have been eager to solve for a long time but have not been successfully solved.

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