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    • 55. 发明授权
    • Method and apparatus for shadow estimation and spreading
    • 阴影估计和扩散的方法和装置
    • US09530244B2
    • 2016-12-27
    • US14538276
    • 2014-11-11
    • Intergraph Corporation
    • Elaine S. Acree
    • G06T17/05G06T15/60G01C21/00G06T7/00
    • G06T15/60G01C21/00G06T15/04G06T17/05G06T2215/12
    • A computer-implemented method for creating an image that depicts shadowing for a specified light source even though the input data is not three-dimensional and is limited to elevation data that associates an elevation value with each of a plurality of spatial coordinates. Plumb line walls are generated between elevation points of neighboring grid cells for each elevation point meeting a specified delta elevation criterion. A shadow map is accumulated based on visibility of each pixel to the light source position, and then, in a subsequent pass through the coordinate pixels of the data, an image is created in a tangible medium with each pixel correspondingly visible or shadowed, either totally or partially. Values along one dimension may be spread over a Z-buffer range to optimally resolve visibility features.
    • 一种计算机实现的方法,用于创建描绘指定光源的阴影的图像,即使输入数据不是三维的,并且限于将高程值与多个空间坐标中的每一个相关联的高程数据。 在每个高程点的相邻网格单元的高程点之间产生符合规定的增量标准的铅垂线。 基于每个像素对光源位置的可视性而累积阴影图,然后在随后的数据的坐标像素中,在有形介质中创建图像,每个像素对应地可见或阴影 或部分。 沿着一个维度的值可以在Z缓冲区范围内扩展,以最佳地解析可见性特征。
    • 56. 发明授权
    • Image change detection
    • 图像变化检测
    • US09396552B1
    • 2016-07-19
    • US14738374
    • 2015-06-12
    • Intergraph Corporation
    • Brian R. Kloer
    • G06K9/00G06T7/40G06T7/00G06T11/60G06Q40/00
    • G06Q40/10G06K9/0063G06K9/6247G06T7/20G06T11/60G06T2207/10024G06T2207/30184
    • A system, method, and computer program product compare images of a physical activity or object. Pixel data from first and second registered color images defined in an N-dimensional color model are concatenated to form an image in a 2N-dimensional color model. Principal component analysis is performed on the composite image and those components representing a change rather than a correlation are identified. In the composite image, coordinates for each pixel are determined along the principal components representing change, and a normalized pixel change value is computed. Pixels in the composite image may be segmented according to their respective normalized pixel change values, where segments do not cross pre-defined geospatial parcel boundaries. Parcel change probabilities are calculated as a function of segment change probabilities, themselves functions of the normalized pixel change values. Finally, parcels are ranked by their change probabilities and highlighted in a graphical user interface.
    • 系统,方法和计算机程序产品比较身体活动或对象的图像。 在N维颜色模型中定义的来自第一和第二注册彩色图像的像素数据被连接以形成2N维颜色模型中的图像。 在组合图像上执行主成分分析,并且识别代表变化而不是相关性的那些成分。 在合成图像中,沿着表示变化的主成分确定每个像素的坐标,并且计算归一化的像素变化值。 合成图像中的像素可以根据其各自的归一化像素变化值进行分割,其中段不跨越预定义的地理空间包裹边界。 包裹变化概率是根据段变化概率,归一化像素变化值的本身函数计算的。 最后,包裹按照其变化概率进行排序,并在图形用户界面中突出显示。
    • 57. 发明申请
    • Method and Apparatus for Shadow Estimation and Spreading
    • 阴影估计和传播的方法和装置
    • US20160133048A1
    • 2016-05-12
    • US14538276
    • 2014-11-11
    • Intergraph Corporation
    • Elaine S. Acree
    • G06T15/60G06T15/06G06T7/00G06T15/50
    • G06T15/60G01C21/00G06T15/04G06T17/05G06T2215/12
    • A computer-implemented method for creating an image that depicts shadowing for a specified light source even though the input data is not three-dimensional and is limited to elevation data that associates an elevation value with each of a plurality of spatial coordinates. Plumb line walls are generated between elevation points of neighboring grid cells for each elevation point meeting a specified delta elevation criterion. A shadow map is accumulated based on visibility of each pixel to the light source position, and then, in a subsequent pass through the coordinate pixels of the data, an image is created in a tangible medium with each pixel correspondingly visible or shadowed, either totally or partially. Values along one dimension may be spread over a Z-buffer range to optimally resolve visibility features.
    • 一种计算机实现的方法,用于创建描绘指定光源的阴影的图像,即使输入数据不是三维的,并且限于将高程值与多个空间坐标中的每一个相关联的高程数据。 在每个高程点的相邻网格单元的高程点之间产生符合规定的增量标准的铅垂线。 基于每个像素对光源位置的可视性而累积阴影图,然后在随后的数据的坐标像素中,在有形介质中创建图像,每个像素对应地可见或阴影 或部分。 沿着一个维度的值可以在Z缓冲区范围内扩展,以最佳地解析可见性特征。