Real-time automatic 3D modeling method based on photographing

Abstract

The invention discloses a real-time automatic 3D modeling method based on photographing. The method comprises the following steps: S1) fixing a mobile device and a camera on the same photographing bracket; s2) acquiring images of a plurality of cameras or mobile equipment in the process of moving the bracket, acquiring the position and orientation of each shooting point, and forming a route map using a unified coordinate system; s3) performing 3D modeling on the camera picture of each shooting point on the mobile device in real time; s4) uniformly placing the 3D model of each shooting point inthe same three-dimensional coordinate system according to the position and orientation obtained in the S2), and splicing the joint parts of the 3D models of the plurality of shooting points to form an overall 3D model containing the plurality of shooting points; and S5) automatically generating a panoramic roaming effect on the mobile device. According to the method, various shooting devices canbe supported, the relative position of each shooting point and the lens orientation of the camera can be automatically and accurately recorded, and a 3D model and a 2D planar graph which can roam inside can be automatically generated.

Description

technical field [0001] The invention relates to a 3D modeling method, in particular to a photograph-based real-time automatic 3D modeling method. Background technique [0002] The technical problem to be solved by the present invention is a real-time modeling scheme of three-dimensional space based on photographing, which can be used for single-space or multi-space 3D modeling and 2D plan generation, including shooting hardware, shooting software, editing software and cloud Show a complete set of process system composed of software. [0003] Traditionally, there are two types of photo-based modeling methods, but both have obvious disadvantages: [0004] The traditional method a) uses a camera capable of recognizing depth information to directly generate a 3D model. This method relies on more complex hardware, resulting in higher equipment costs, and often requires professional photographers to operate, which is not conducive to popularization; [0005] Traditional method ...

AI Technical Summary

Problems solved by technology

[0006] Disadvantage 1: The amount of calculation is large, and it cannot be modeled in real time on mobile devices. It is usually uploaded to the server (cloud / PC) and uses stronger computing power to run the modeling algorithm;

[0007] Disadvantage 2: It is impossible to give a specification for how far to shoot at a specific interval. If it is too dense, it will be too troublesome to use and takes too long; if it is only visible by two or two, it may fail to model, and the user cannot be prompted when shooting

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