公开(公告)号：US20150161780A1

公开(公告)日：2015-06-11

申请号：US13166356

申请日：2011-06-22

申请人： Xiaqing WU ,  Lin Yang

发明人： Xiaqing WU ,  Lin Yang

IPC分类号： G06K9/00 ,  G06T7/00 ,  G06K9/62 ,  G06T7/40

CPC分类号： G06K9/00657 ,  G06K9/4642 ,  G06K9/6223

摘要： Embodiments determine the species of trees present in an aerial image. Tree crowns are detected in a received image, and represented as histograms of their color, texture and entropy features. Similar trees are clustered together. Using classification techniques, each cluster is assigned the closest species. The species information for each tree may be used in a rendering of the tree in geographical information systems.

摘要翻译： 实施例确定在空中图像中存在的树的种类。 在接收到的图像中检测到树冠，并将其表示为其颜色，纹理和熵特征的直方图。 类似的树被聚集在一起。 使用分类技术，每个簇被分配最接近的物种。 每棵树的物种信息可用于地理信息系统中树的呈现。

公开(公告)号：US20140125667A1

公开(公告)日：2014-05-08

申请号：US12944371

申请日：2010-11-11

申请人： Emil PRAUN ,  Stephen Charles HSU ,  Xiaqing WU

发明人： Emil PRAUN ,  Stephen Charles HSU ,  Xiaqing WU

IPC分类号： G06T17/20 ,  G06T15/50 ,  G06T15/00

CPC分类号： G06T17/05 ,  G06K9/00637

摘要： System, methods and computer program product embodiments for roof generation of 3D models from ground acquired data. An embodiment includes grouping a plurality of 3D model facades and aligning each group of facades with aerial imagery. The embodiment further comprises identifying if a space between the facades is located within or outside a 3D model, generating a roof that connects plurality of facades and texturing the generated roof with the aerial imagery. In this way, when 3D data is limited to 3D model facades and lacks roof (and vertical face) information, embodiments of the invention create complete 3D models by generating a roof that connects plurality of facades and texturing the generated roof with the aerial imagery. This greatly improves user experience as 3D models closely approximate their respective real world counterparts.

摘要翻译： 用于从地面获取的数据屋顶生成3D模型的系统，方法和计算机程序产品实施例。 一个实施例包括对多个3D模型立面进行分组，并将每组立面与空中图像对齐。 该实施例还包括确定外墙之间的空间是否位于3D模型内或外，产生连接多个立面的屋顶，并使所生成的屋顶与航空图像纹理化。 以这种方式，当3D数据被限制到3D模型立面并且没有屋顶（和垂直面）信息时，本发明的实施例通过产生连接多个立面并将所生成的屋顶纹理化为空中图像的屋顶来创建完整的3D模型。 这大大提高了用户体验，因为3D模型与其各自的现实世界同行密切相近。

公开(公告)号：US20120177305A1

公开(公告)日：2012-07-12

申请号：US13426284

申请日：2012-03-21

申请人： Xiaqing WU

发明人： Xiaqing WU

IPC分类号： G06K9/32

CPC分类号： G06K9/00651 ,  G06K9/4609

摘要： The present invention relates to methods for aligning raster and vector data.In an embodiment, a raster/vector aligner receives raster data and an approximate vector of a feature within the raster data. The raster/vector aligner generates an edge signal by edge filtering the raster data along a direction of the approximate vector and a smoothness signal by smoothness filtering the raster data along a direction of the approximate vector. The raster/vector aligner combines the edge signal and the smoothness signal into a combined signal which is used to generate a translation vector or a signal weight for the feature within the raster data.

摘要翻译： 本发明涉及用于对准光栅和矢量数据的方法。 在一个实施例中，光栅/矢量对准器接收光栅数据和光栅数据内的特征的近似向量。 栅格/矢量对准器通过沿着近似矢量的方向对光栅数据进行边缘滤波，并通过沿着近似矢量的方向对光栅数据进行平滑滤波来平滑地生成边缘信号。 光栅/矢量对准器将边缘信号和平滑度信号组合成用于生成光栅数据内的特征的平移矢量或信号权重的组合信号。