Real-time three-dimensional point cloud reconstruction method and system based on multiple cameras

Abstract

The invention provides a real-time three-dimensional point cloud reconstruction method based on multiple cameras. The method is characterized in comprising the following steps that: constructing a multi-camera synchronous collection system, carrying out multi-camera system calibration, establishing a projection lookup table and carrying out image collection, object contour segmentation and three-dimensional reconstruction. The invention also provides a real-time three-dimensional point cloud reconstruction system based on multiple cameras. The system comprises a sealed three-dimensional space, a plurality of cameras, a plurality of lamp sources and a computer, wherein the plurality of cameras and the plurality of lamp sources are fixedly installed around the three-dimensional space; the cameras are connected with the computer; and the computer comprises a camera calibration module, a projection lookup table calculation module, an object outline segmentation module and a three-dimensional reconstruction module. The three-dimensional reconstruction disclosed by the invention has the advantages of being higher in accuracy, higher in efficiency, universally applicable and simpler in calculation.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional information, and in particular relates to a multi-camera-based real-time three-dimensional point cloud reconstruction method and system. technical background [0002] 3D reconstruction is a common problem in computer vision, computer graphics and other fields. The so-called three-dimensional object reconstruction refers to obtaining the 2D image or 2.5D depth data of the three-dimensional object in space through the sensing device, and recovering the three-dimensional structure of the object from it. Sensing types may include optically imageable, laser scanning, thermal imaging, etc. 3D reconstruction has many applications in computer-aided design, 3D animation / games, scientific computing and virtual reality, industrial measurement, etc. [0003] Currently, there are three commonly used 3D reconstruction devices or methods on the market. The first is a method based on laser scanning, ...

AI Technical Summary

Problems solved by technology

The disadvantage of this type of method is that it requires additional auxiliary equipment, and it will encounter difficulties in scenes with fast moving objects

Moreover, there are some 3D reconstruction methods, the segmentation of object contour is not clean, the acquisition of object contour and object appearance color information is not accurate, the amount of calculation is large, and the steps are complicated

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