Computer system and method for generating a 3D geometric model
    3.
    发明授权
    Computer system and method for generating a 3D geometric model 有权
    用于生成3D几何模型的计算机系统和方法

    公开(公告)号:US08970579B2

    公开(公告)日:2015-03-03

    申请号:US12671014

    申请日:2008-07-22

    IPC分类号: G06T17/00 G06K9/46 G06T17/10

    摘要: For generating a 3D geometric model (44) and/or a definition of the 3D geometric model from a single digital image of a building facade (4), a facade structure is detected from the digital image by dividing the facade (4) along horizontal lines into horizontal layers representative of floors (41), and by dividing the horizontal layers along vertical lines into tiles (42). The tiles (42) are further subdivided into a hierarchy of rectangular image regions (43). 3D architectural objects (45) corresponding to the image regions (43) are determined in an architectural element library. The 3D geometric model (44) or the definition of the 3D geometric model is generated based on the facade structure, the hierarchy and the 3D architectural objects (45). The library-based generation of the 3D geometric model makes it possible to enhance simple textured building models constructed from aerial images and/or ground-based photographs.

    摘要翻译: 为了从建筑立面(4)的单个数字图像生成3D几何模型(44)和/或3D几何模型的定义,通过将立面(4)沿水平方向分割,从数字图像检测立面结构 将水平层划分成代表层(41)的水平层,并且通过沿着垂直线将水平层划分成瓦片(42)。 瓦片(42)进一步细分为矩形图像区域(43)的层级。 在建筑元素库中确定对应于图像区域(43)的3D建筑物体(45)。 基于立面结构,层次结构和3D建筑对象(45)生成3D几何模型(44)或3D几何模型的定义。 基于图书馆的3D几何模型可以增强由空中图像和/或地面照片构成的简单纹理建筑模型。