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    • 3. 发明授权
    • Method for automatic alignment of raster data with vector data in a geographic information system
    • 在地理信息系统中自动对齐栅格数据与矢量数据的方法
    • US07869667B1
    • 2011-01-11
    • US11655292
    • 2007-01-19
    • Xiaqing Wu
    • Xiaqing Wu
    • G06K9/54
    • G06K9/00651G06K9/4609
    • 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.
    • 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。
    • 5. 发明授权
    • Method for automatic alignment of raster data with vector data in a geographic information system
    • 在地理信息系统中自动对齐栅格数据与矢量数据的方法
    • US08805118B2
    • 2014-08-12
    • US13426284
    • 2012-03-21
    • Xiaqing Wu
    • Xiaqing Wu
    • G06K9/32
    • G06K9/00651G06K9/4609
    • 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.
    • 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。
    • 6. 发明授权
    • Method for automatic alignment of raster data with vector data in a geographic information system
    • 在地理信息系统中自动对齐栅格数据与矢量数据的方法
    • US08160397B1
    • 2012-04-17
    • US12888118
    • 2010-09-22
    • Xiaqing Wu
    • Xiaqing Wu
    • G06K9/32
    • G06K9/00651G06K9/4609
    • 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.
    • 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。
    • 7. 发明申请
    • Real-time interactive rubber sheeting using dynamic delaunay triangulation
    • 使用动态Delaunay三角测量的实时交互式橡胶片
    • US20070182762A1
    • 2007-08-09
    • US11346766
    • 2006-02-03
    • Xiaqing WuEugene LevinGeoffrey Wade
    • Xiaqing WuEugene LevinGeoffrey Wade
    • G09G5/00
    • G06T3/0093G06T17/20
    • A novel, easy to use, and computational efficient rubber sheeting algorithm is designed for interactive image registration in a web-based application environment. The algorithm has two steps, including a piece-wise linear interpolation step to interactively find a suitable set of control points and displacement vectors, and a following optional global radial basis wrap step to generate smoother result using the final control point set. A dynamic Delaunay triangulation method is designed to efficiently update the decomposition of the image. Natural and intuitive wrapping result will be dynamically generated in real-time while the user interactively insert, delete or drag a control point. The number of control points is not limited, and a large number of control points can be used if necessary without compromising the performance of the algorithm. With enough control points specified using the piece-wise rubber-sheeting step, the wrapping result can be further smoothed by using the optional, click-button poly-quadric global wrapping method in the second step. The algorithm is implemented as a Java Applet and able to run as a cross-platform web-based application.
    • 一种新颖,易于使用和计算有效的橡胶片算法被设计用于基于Web的应用环境中的交互式图像注册。 该算法具有两个步骤,包括分段线性插值步骤,以交互方式找到适当的一组控制点和位移矢量,以及随后的可选的全局径向基础包裹步骤,以使用最终控制点集合来产生更平滑的结果。 动态Delaunay三角测量方法旨在有效地更新图像的分解。 当用户以交互方式插入,删除或拖动控制点时,自动和直观的包装结果将被实时动态生成。 控制点的数量不受限制,如果需要,可以使用大量控制点,而不会影响算法的性能。 通过使用分段橡胶片步骤指定足够的控制点,可以通过在第二步中使用可选的单击按钮多二次方全局包装方法来进一步平滑包装结果。 该算法实现为Java Applet,并且能够作为跨平台的基于Web的应用程序运行。
    • 8. 发明授权
    • Tree detection form aerial imagery
    • 树检测形式航空影像
    • US08655070B1
    • 2014-02-18
    • US12836849
    • 2010-07-15
    • Lin YangXiaqing WuEmil Praun
    • Lin YangXiaqing WuEmil Praun
    • G06K9/00G06K9/34G06K9/62
    • G06K9/00657
    • 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.
    • 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。