公开(公告)号：US20210248816A1

公开(公告)日：2021-08-12

申请号：US17043580

申请日：2020-02-27

Applicant: SOUTHEAST UNIVERSITY

Inventor： Junyan YANG ,  Jun CAO ,  Yang CHENG ,  Qingyao ZHANG ,  Zuhao ZHOU

IPC: G06T17/05 ,  G06T7/40 ,  G06T7/60 ,  G06T19/20

Abstract: The present invention discloses an embedded urban design scene emulation method and system. The method includes the following steps: constructing a status quo urban three-dimensional model scene according to collected oblique photography data; loading a three-dimensional model of urban design to a scene, and extracting geometric attributes for generation of buildings; unifying a space coordinate system of models and scenes, and automatically determining a space matching degree by taking buildings as a basic unit, and marking matched buildings with Y and mismatched buildings with N for distinction; for a region with the buildings marked with N, performing a local flattening operation in a three-dimensional model scene of oblique photography to flatten stereo data; for a region with the buildings marked with Y, performing real-time space editing in the three-dimensional model of urban design to hide the marked buildings; and opening two sets of processed space data to implement mosaic display. The present invention can conveniently embed a three-dimensional model of urban design into a status quo three-dimensional model of oblique photography for scene emulation, and provides technical and method supports for digital presentation and management of urban design achievements.

公开(公告)号：US20190087515A1

公开(公告)日：2019-03-21

申请号：US16086315

申请日：2016-05-04

Applicant: SOUTHEAST UNIVERSITY

Inventor： Junyan YANG ,  Jun CAO

IPC: G06F17/50 ,  G06T17/05

CPC classification number: G06F17/5004 ,  G06F17/50 ,  G06F2217/16 ,  G06T17/05 ,  G06T2200/04 ,  G06T2200/08

Abstract: The present invention is a method for optimal control of an open space surrounding building form based on sky view evaluation. The method includes the following steps: vectorizing an existing planning scheme, and establishing a 3D model; classifying open spaces in the model, 360°-scanning for mean elevations, calculating and simulating sky views of a whole region, generating a 3D contour plot, and rasterizing the 3D isogram, such that each grid has an open space classification attribute and a sky view value; performing optimal adjustment of the building form on an open space surrounding region having a sky view value that is inconsistent with a corresponding preset sky view index within the range of the whole region, and bringing an adjusted scheme into the model for calculation again, till the sky view value is consistent with the corresponding preset sky view index.