A 3D acquisition device for close-range objects

Abstract

The present invention provides a short-distance target object 3D acquisition device, an acquisition area moving device, which is used to drive the acquisition area of ​​the image acquisition device to generate relative motion with the target object; the image acquisition device is used to acquire a set of target objects through the relative movement Image; the collection position of the image collection device meets the preset conditions. For the first time, a 3D acquisition and synthesis method for tiny objects is proposed. By setting the background plate to rotate together, it is guaranteed that the synthesis speed and synthesis accuracy can be improved at the same time.

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. For example, the Digital Emily project of the University of Southern California uses a spherical bracket, and hundreds of cameras are fixed at different positions and angles on the bracket, so as to realize 3D acquisition and modeling of the human body. But even with such a device, it can only collect 3D information of human...

AI Technical Summary

Problems solved by technology

For small-sized targets, measuring the size of the target itself is a difficult task. If the target needs to be measured before each 3D acquisition and synthesis, it will bring additional burden and the accuracy is difficult to guarantee.

At the same time, in practical applications, it is found that unless there is an accurate angle measuring device, the user is not sensitive to the angle, and it is difficult to determine the angle accurately; the size of the target is difficult to determine accurately, especially in some applications where the target needs to be replaced frequently, and every measurement Brings a lot of extra work and requires specialized equipment 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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