Three-dimensional model-based Indoor and outdoor integrated construction method and system
A 3D model and construction method technology, applied in the field of geographic information, can solve the problems of unclear absolute coordinates of buildings, poor accuracy of indoor and outdoor integrated modeling, etc., and achieve high-precision results
Pending Publication Date: 2022-01-28
CHONGQING CYBERCITY SCI TECH
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Problems solved by technology
[0004] Aiming at the deficiencies of the above-mentioned prior art, the problem to be solved by the present invention is: how to provide a three-dimensional model indoor and outdoor integrated construction method to solve the problem of poor accuracy of indoor and outdoor integrated modeling in the prior art and the absolute coordinates inside the building unclear question
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[0043] The present invention will be further described in detail below in conjunction with specific embodiments.
[0044] It should be noted that these examples are only used to illustrate the present invention, rather than to limit the present invention, and the simple improvement of the method under the premise of the present invention all belongs to the protection scope of the present invention.
[0045] see figure 1 , is an indoor-outdoor integrated construction method of a 3D model, including obtaining outdoor point cloud data of a building, and establishing an outdoor model; screening the outdoor contour points of the building according to the outdoor point cloud data, determining the outdoor door and window contour points, and converting the outdoor door and window contour points to Among the points, the 4 corner points that are not coplanar are used as outdoor calibration points, and the distance between any two calibration points must be greater than the set threshold...
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The invention relates to the technical field of geographic information, in particular to a three-dimensional model indoor and outdoor integrated construction method and system, and the method comprises the steps of obtaining outdoor point cloud data; screening outdoor contour points of the building, and determining outdoor door and window contour points; taking four non-coplanar corner points in the outdoor door and window contour points as outdoor calibration points, wherein the distance between any two calibration points is greater than a set threshold value; then determining a central point through an outdoor calibration point; establishing a space rectangular coordinate system by taking the central point as an original point; the indoor calibration points being homonymy points of the outdoor calibration points in a room of the building, obtaining indoor point cloud data of the building through the indoor calibration points, and building an indoor high-precision model; rotating and translating the indoor calibration point to the outdoor calibration point through a least square algorithm, so that the indoor calibration point and the outdoor calibration point coincide, and an indoor and outdoor integrated three-dimensional model is formed; compared with a scanner, the invention has higher precision for indoor and outdoor integrated modeling.
Description
technical field [0001] The invention relates to the technical field of geographic information, in particular to a method and system for building an integrated indoor and outdoor three-dimensional model. Background technique [0002] The "digital city" system is a human-earth (geographical environment) relationship system, which embodies the interaction and relationship between people and people, land and land, and people and land. The system includes government, enterprises, citizens, and geographical environment, which are relatively independent. and closely related subsystems. Government management, business activities of enterprises, and the production and life of citizens all reflect this human-land relationship in the city. CUDI International Urban Development Research Institute believes that the informatization of cities is essentially the digitization of the urban man-land relationship system, which embodies the dominant position of "people". Regulate the relationsh...
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IPC IPC(8): G06T17/05G06T15/04G06T7/90G06T7/62G06T7/33G06T3/00G06V10/762G01B11/24
CPCG06T17/05G06T7/344G06T15/04G06T7/62G06T7/90G01B11/24G06T2207/10028G06F18/23G06T3/06
Inventor 向煜黄志黄辉朱勃罗斌李兵刘颖徐艇伟龚文辉吴传黄心颜春波赖恒钟敏韩烈兵
Owner CHONGQING CYBERCITY SCI TECH