公开(公告)号：US11222465B2

公开(公告)日：2022-01-11

申请号：US17043580

申请日：2020-02-27

Applicant: SOUTHEAST UNIVERSITY

Inventor： Junyan Yang ,  Jun Cao ,  Qingyao Zhang ,  Beixiang Shi ,  Yi Shi

IPC: G06T17/05 ,  G06T7/40 ,  G06T7/60 ,  G06T19/20 ,  G06T17/00

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：US10423729B2

公开(公告)日：2019-09-24

申请号：US16086315

申请日：2016-05-04

Applicant: SOUTHEAST UNIVERSITY

Inventor： Junyan Yang ,  Jun Cao

IPC: G06F17/50 ,  G06T17/05

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.

公开(公告)号：US11302072B2

公开(公告)日：2022-04-12

申请号：US16629312

申请日：2018-06-06

Applicant: SOUTHEAST UNIVERSITY

Inventor： Junyan Yang ,  Beixiang Shi ,  Jun Cao ,  Tanhua Jin

IPC: G06G7/48 ,  G06T17/10 ,  G06T19/00 ,  G06F30/13 ,  G06F111/20

Abstract: A system for constructing an urban design digital sand table, the system includes the following modules. A sand table environment constructing module, configured to construct a digital environment of the urban design sand table. An element grading display module, configured to perform hierarchical management on urban design elements, and perform visual hierarchical display. A spatial indicator interpretation module, configured to articulate names, algorithms, and attributes for indicators in an indicator library of the urban design digital sand table. A spatial calculation tool module, configured to load a toolkit to calculate a selected range in the digital sand table. An offline data extraction module, configured to extract the data of the digital sand table so as to export two-dimensional or three-dimensional spatial data in an offline mode. A dynamic real-time editing module, configured to perform real-time editing operation on an urban digital design scheme loaded in the system.