Indoor positioning system and method based on CAD drawing to generate three-dimensional model

Abstract

The invention provides an indoor positioning system and method based on CAD drawing to generate a three-dimensional model. The method includes obtaining the position information of the indoor person through the wifi positioning technology, converting the position information into three-dimensional coordinates and uploading the coordinates; analyzing the file data by accessing the composition structure of the CAD file, and generating the three-dimensional data through the generated data and the existing three-dimensional graphics library; converting the position coordinate information into a three-dimensional model through matrix transformation, and finally rendering the three-dimensional model in real time; displaying the position information and the motion track in the personnel room intothe three-dimensional model; The indoor positioning system and method based on CAD drawing to generate a three-dimensional model are simple in operation, high in automation, and the effects are relatively real. The indoor positioning system based on WIFI can accurately obtain the position information of the person in the room, and display the position information in the three-dimensional model, and the visibility effect is better.

Description

technical field [0001] The invention belongs to the field of indoor positioning, in particular to an indoor positioning system and method for generating a three-dimensional model based on a CAD drawing. Background technique [0002] The traditional method in the existing image-based modeling technology is to implement modeling through some modeling software, such as 3ds Max, Maya and other modeling software, and use a 3D scanner to scan objects to obtain a 3D model. This traditional method Although the modeling effect is good, it has high operability, high complexity and low automation. At the same time, the 3D reconstruction technology is more popular now, but it also has many shortcomings. The 3D reconstruction technology based on images needs several images based on the real perception of real 3D objects or scenes. The images in the scene are all 2D information, and it is difficult for users to Obtain important information in acquiring 2D images. In short, the existing ...

AI Technical Summary

Problems solved by technology

[0002]The traditional method in the existing image-based modeling technology is to implement modeling through some modeling software, such as 3ds Max, Maya and other modeling software, and use The 3D scanner scans the object to obtain a 3D model. Although this traditional method has a good modeling effect, it has high operability, high complexity and low automation.

At the same time, the 3D reconstruction technology is more popular now, but it also has many shortcomings. The 3D reconstruction technology based on images needs several images based on the real perception of real 3D objects or scenes. The images in the scene are all 2D information, and it is difficult for users to Obtain important information in two-dimensional images

In short, the existing image-based modeling techniques have more or less certain shortcomings

[0003]At the same time, the current positioning system generally displays the positioning information on a two-dimensional map, which has poor visibility and insufficient sense of reality. Satellite positioning technology cannot accurately locate the specific indoor location

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