Method and system for building digital twins

Abstract

The present application provides a method and system for constructing a building digital twin, the method comprising: obtaining image frames to be processed frame by frame from the monitoring video stream of the first building scene; performing 3D object detection on the image frames to be processed to obtain a 3D pose Detection result; between the pixel coordinate system and the virtual space world coordinate system, use the camera intrinsic parameter matrix and camera extrinsic parameters of the first shooting device to perform coordinate transformation processing on the image position coordinates of each entity object in the three-dimensional pose detection result , to obtain the entity position coordinates of each entity object in the 3D pose detection result; and update the first virtual scene model according to the display difference between each entity object in the 3D pose detection result and the first virtual scene model. In this way, the building information model mapped in the virtual space of the target physical building can be linked and updated, so as to maintain the virtual-real consistency between the physical building and the virtual model, and improve the maintenance efficiency of the user for the target physical building.

Description

technical field [0001] This application relates to the technical field of architectural digital twins, in particular, to a construction method and system for architectural digital twins. Background technique [0002] Digital twin refers to making full use of data such as physical models, sensor updates, and operation history, integrating multi-disciplinary, multi-physical quantities, multi-scale, and multi-probability simulation processes, and completing the mapping in the virtual space to reflect the entire life of the corresponding physical equipment. cycle process. [0003] Specifically, architectural digital twins mean that in the application scenarios of engineering construction, in order to display the spatial layout structure of the target physical building more intuitively and clearly, engineering construction personnel usually construct a model that can reflect the target physical building after the target physical building is completed. The building information mo...

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Problems solved by technology

[0004] Based on this, during the building digital twin construction process, since the model information in the digital twin model is determined based on the initial construction information of the target physical building, some real scenes in the target physical building change (such as interior decoration design changes, room layout changes, personnel flow, etc.), it will lead to distortion of the model information in the digital twin model, which in turn will reduce the user's maintenance and management efficiency of the target physical building

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