A rotating 3D information rapid collection device

Abstract

The invention provides a rotating 3D information rapid acquisition device, which includes an image acquisition device, a rotation device and a background plate, wherein the rotation device is used to drive the image acquisition device to rotate, and to drive the background plate to rotate; the background plate and the image acquisition device rotate The relative setting is kept in the process, so that the background plate becomes the background pattern of the image captured by the image acquisition device during acquisition; the projection length M of the background plate along the horizontal direction and the projection length N along the vertical direction satisfy the following relationship: 3.5*L*tanβ >M>0.9*L*tanβ; 3.5*L*tanβ>N>0.9*L*tanβ, where β is the half field angle of the image acquisition device, and L is the distance from the image acquisition device to the background plate. For the first time, it is proposed to increase the synthesis speed and synthesis accuracy by increasing the way that the background plate rotates with the camera.

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, it involves the problems of synthesis speed and synthesis accuracy. To some extent, the synthesis speed and synthesis accuracy are a pair of contradictions. The increase of the synthesis speed will lead to the decrease of the final 3D synthesis accuracy; to improve the 3D synthesis a...

AI Technical Summary

Problems solved by technology

And the field has always believed that the way to solve the above problems lies in the selection and update of the algorithm. Up to now, there is no method to improve the synthesis speed and synthesis accuracy from other angles.

However, the optimization of the algorithm has reached the bottleneck. Before the emergence of a better theory, it is impossible to improve the synthesis speed and synthesis accuracy.

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