Tree detection form aerial imagery
    1.
    发明授权
    Tree detection form aerial imagery 有权
    树检测形式航空影像

    公开(公告)号:US08655070B1

    公开(公告)日:2014-02-18

    申请号:US12836849

    申请日:2010-07-15

    IPC分类号: G06K9/00 G06K9/34 G06K9/62

    CPC分类号: G06K9/00657

    摘要: Methods and systems for detecting trees in aerial imagery are provided. A method for detecting trees in aerial imagery may include training a pixel-level classifier to assign a tree or non-tree label to each pixel in an aerial image. The method may further include segmenting tree and non-tree regions of the labeled pixels. The method may also include locating individual tree crowns in the segmented tree regions using one or more tree templates. A system for detecting trees in aerial imagery may include a trainer, a segmenter and a tree locator.

    摘要翻译: 提供了用于检测航空图像中树木的方法和系统。 用于检测航空图像中的树木的方法可以包括训练像素级分类器以将空间图像中的每个像素分配树或非树标签。 该方法还可以包括分割标记像素的树和非树状区域。 该方法还可以包括使用一个或多个树模板将单个树冠定位在分段树状区域中。 用于检测航空图像中的树木的系统可以包括训练者,分割器和树定位器。

    Methods and systems for geometry compression
    2.
    发明授权
    Methods and systems for geometry compression 有权
    几何压缩的方法和系统

    公开(公告)号:US08493381B1

    公开(公告)日:2013-07-23

    申请号:US12421148

    申请日:2009-04-09

    IPC分类号: G06T15/10

    CPC分类号: G06T9/001

    摘要: Methods and systems for geometry compression. In an embodiment, the present invention compresses three dimensional geometry by (1) extracting at least one primitive from the three dimensional geometry, where each extracted primitive includes vertices and property indices that associate properties with the vertices; (2) quantizing, for each extracted primitive, the properties to a fixed grid; (3) converting, for each extracted primitive, the properties from a first data type to a second data type; and (4) encoding property indices, where the encoded property indices and quantized and converted properties are transmitted via a communication network in order to display the three dimensional geometry.

    摘要翻译: 几何压缩的方法和系统。 在一个实施例中,本发明通过(1)从三维几何提取至少一个原语来压缩三维几何,其中每个提取的基元包括将属性与顶点相关联的顶点和属性索引; (2)对于每个提取的原语,量化到固定网格的属性; (3)对于每个提取的原语将属性从第一数据类型转换为第二数据类型; 和(4)编码属性索引,其中通过通信网络发送编码的属性索引和量化和转换的属性,以便显示三维几何。

    Methods for efficiently querying multiple points in an indexed quadtree
    4.
    发明授权
    Methods for efficiently querying multiple points in an indexed quadtree 有权
    有效查询索引四叉树中多个点的方法

    公开(公告)号:US08639725B1

    公开(公告)日:2014-01-28

    申请号:US13018333

    申请日:2011-01-31

    IPC分类号: G06F7/00 G06F17/30

    摘要: A method for efficiently querying multiple points in an indexed quadtree is disclosed. The elevation along a path containing points covered by nodes in a quadtree is desired. Index nodes covering the nodes with elevation data are retrieved. Based on the data in the index nodes, the highest resolution data is retrieved while limiting database lookups below a specified limit.

    摘要翻译: 公开了一种用于有效查询索引四叉树中的多个点的方法。 期望沿着包含四叉树节点覆盖的点的路径的高程。 检索覆盖具有高程数据的节点的索引节点。 基于索引节点中的数据,检索最高分辨率数据,同时限制数据库查找低于指定限制。

    Rendering spherical space primitives in a cartesian coordinate system
    5.
    发明授权
    Rendering spherical space primitives in a cartesian coordinate system 有权
    在笛卡尔坐标系中渲染球形空间原语

    公开(公告)号:US08675013B1

    公开(公告)日:2014-03-18

    申请号:US13162237

    申请日:2011-06-16

    IPC分类号: G09G5/00

    摘要: Embodiments render polygonal data in a geographical information systems according to a viewing perspective of a geographical information systems user. The user may define a viewing perspective. A bounding box may be determined that includes the area being viewed in the viewing perspective. A spherical coordinate to Cartesian coordinate matrix may be determined to approximately convert spherical coordinates of the polygonal data to Cartesian coordinates to be rendered by a graphics processor. The graphics processor may then render the polygonal data and bias detail towards the viewing perspective of the user.

    摘要翻译: 实施例根据地理信息系统用户的观看透视图在地理信息系统中呈现多边形数据。 用户可以定义观看透视图。 可以确定包括在观看透视图中正在观看的区域的边界框。 可以确定对笛卡尔坐标矩阵的球面坐标以近似地将多边形数据的球面坐标转换为由图形处理器呈现的笛卡尔坐标。 然后,图形处理器可以渲染多边形数据,并向用户的观看视角偏置细节。

    Rendering terrain patches
    6.
    发明授权
    Rendering terrain patches 有权
    渲染地形补丁

    公开(公告)号:US08976169B1

    公开(公告)日:2015-03-10

    申请号:US13461537

    申请日:2012-05-01

    IPC分类号: G06T15/00

    CPC分类号: G06T15/04 G06T17/05 G06T17/20

    摘要: Systems, methods, and computer storage mediums are provided for blending custom terrain patches onto a terrain of a virtual three-dimensional environment. A method includes accessing terrain data that describes a mesh representing the surface of the terrain of the three-dimensional environment. The mesh is constructed of primitives that are defined by a terrain altitude at each vertex. A surface grid is determined from the primitives such that each point in the surface grid includes the terrain altitude where the point falls on the mesh. Custom terrain data is also accessed that includes a custom grid of terrain altitudes. A patch grid is determined from the custom grid such that each point in the patch grid includes a terrain altitude derived from the custom grid. The patch and surface grids are blended such that each terrain altitude in the patch grid modifies its corresponding terrain altitude in the surface grid.

    摘要翻译: 提供系统,方法和计算机存储介质,用于将自定义地形贴片混合到虚拟三维环境的地形上。 一种方法包括访问描述表示三维环境的地形表面的网格的地形数据。 网格由每个顶点的地形高度定义的图元构成。 从基元确定表面网格,使得表面网格中的每个点包括点落在网格上的地形高度。 还可以访问包括地形高度的自定义网格的自定义地形数据。 从自定义网格确定补丁网格,使得补丁网格中的每个点都包含从自定义网格导出的地形高度。 混合补片和表面网格,使得补丁网格中的每个地形高度修改其表面网格中相应的地形高度。

    Block Based Level of Detail Representation
    7.
    发明申请
    Block Based Level of Detail Representation 审中-公开
    基于块的级别的细节表示

    公开(公告)号:US20140354626A1

    公开(公告)日:2014-12-04

    申请号:US12778801

    申请日:2010-05-12

    IPC分类号: G06T15/00

    摘要: Systems and methods for block based level of detail representation are described herein. A method embodiment includes extracting one or more 3D models from 3D data, grouping the 3D models based on one or more attributes of the 3D models, distributing the grouped 3D models to a plurality of resolution levels of a geospatial data structure, and merging the grouped 3D models as a combined 3D model. A system embodiment includes a prepossessing system configured to extract one or more 3D models from 3D data and a block level of detail (LOD) creator configured to group the 3D models based on one or more attributes of the 3D models, and to render the grouped 3D models as a combined 3D model.

    摘要翻译: 本文描述了基于块的细节级别表示的系统和方法。 方法实施例包括从3D数据提取一个或多个3D模型,基于3D模型的一个或多个属性对3D模型进行分组,将分组的3D模型分配到地理空间数据结构的多个分辨率级别,以及将分组的 3D模型作为组合3D模型。 系统实施例包括被配置为从3D数据提取一个或多个3D模型的预收费系统和被配置为基于3D模型的一个或多个属性来对3D模型进行分组的块细节级别(LOD)创建器,并且将分组 3D模型作为组合3D模型。

    Methods and systems for encoding the maximum resolution data level for a quadtree
    8.
    发明授权
    Methods and systems for encoding the maximum resolution data level for a quadtree 有权
    用于编码四叉树的最大分辨率数据级别的方法和系统

    公开(公告)号:US08856184B1

    公开(公告)日:2014-10-07

    申请号:US13018336

    申请日:2011-01-31

    IPC分类号: G06F7/00 G06F17/30

    摘要: A method and system for searching for data covered by nodes in a quadtree are disclosed. Nodes at a selected level of the quadtree are encoded with an index. The index nodes store data related to the level of descendants and ancestors of each index node. To search for data covered by a particular desired node, the index node ancestor or descendant of the desired node is determined. Based on the data in the index node, the desired node can be located without a full traversal of the quadtree. The quadtree nodes store elevation data for points on the Earth.

    摘要翻译: 公开了一种用于搜索四叉树节点覆盖的数据的方法和系统。 四叉树的选定级别的节点用索引编码。 索引节点存储与每个索引节点的后代和祖先级别相关的数据。 为了搜索特定期望节点覆盖的数据,确定所需节点的索引节点祖先或后代。 基于索引节点中的数据,可以找到所需的节点,而不需要四叉树的完全遍历。 四叉树节点存储地球上的点的高程数据。