Probabilistic color classification
    41.
    发明授权
    Probabilistic color classification 有权
    概率颜色分类

    公开(公告)号:US09563824B2

    公开(公告)日:2017-02-07

    申请号:US14739635

    申请日:2015-06-15

    Abstract: Methods, systems, computer-readable media, and apparatuses for assigning a color class of a defined finite set of colors to at least one sub-region within a test image are presented. A plurality of sub-regions are identified within a test image. A first sub-region color value is determined for a selected first sub-region of the test image. Using the first sub-region color value and a plurality of zero-order probability distributions, a first color class of the defined finite set of colors is determined as a hypothesis color for the first sub-region. A second sub-region color value is determined for a selected second sub-region of the test image. Using the second sub-region color value and a conditional probability distribution conditioned on the hypothesis color for the first sub-region, a second color class of the defined set of colors is determined. The second color class is assigned to the second sub-region.

    Abstract translation: 呈现用于将定义的有限颜色集合的颜色分类分配给测试图像内的至少一个子区域的方法,系统,计算机可读介质和装置。 在测试图像内识别多个子区域。 针对测试图像的所选择的第一子区域确定第一子区域颜色值。 使用第一子区域颜色值和多个零阶概率分布,将所定义的有限颜色集合的第一颜色类别确定为第一子区域的假设颜色。 对于测试图像的所选择的第二子区域确定第二子区域颜色值。 使用第二子区域颜色值和对第一子区域的假设颜色进行调节的条件概率分布,确定所定义的一组颜色的第二颜色类别。 第二个颜色类被分配给第二个子区域。

    Sensor-aided wide-area localization on mobile devices
    43.
    发明授权
    Sensor-aided wide-area localization on mobile devices 有权
    传感器辅助广域定位在移动设备上

    公开(公告)号:US09031283B2

    公开(公告)日:2015-05-12

    申请号:US13719012

    申请日:2012-12-18

    Abstract: A mobile device uses vision and orientation sensor data jointly for six degree of freedom localization, e.g., in wide-area environments. An image or video stream is captured while receiving geographic orientation data and may be used to generate a panoramic cylindrical map of an environment. A bin of model features stored in a database is accessed based on the geographic orientation data. The model features are from a pre-generated reconstruction of the environment produced from extracted features from a plurality of images of the environment. The reconstruction is registered to a global orientation and the model features are stored in bins based on similar geographic orientations. Features from the panoramic cylindrical map are matched to model features in the bin to produce a set of corresponding features, which are used to determine a position and an orientation of the camera.

    Abstract translation: 移动设备使用视觉和姿态传感器数据联合进行六自由度定位,例如在广域环境中。 捕获图像或视频流,同时接收地理取向数据,并且可以用于生成环境的全景圆柱图。 基于地理位置数据访问存储在数据库中的模型特征的一个bin。 模型特征来自从环境的多个图像的提取特征产生的环境的预先生成的重建。 重建被注册到全局方向,并且基于类似的地理位置将模型特征存储在箱中。 全景圆柱形地图的特征与仓中的模型特征相匹配,以产生一组相应的特征,用于确定相机的位置和方向。

    STRUCTURAL MODELING USING DEPTH SENSORS
    44.
    发明申请
    STRUCTURAL MODELING USING DEPTH SENSORS 有权
    使用深度传感器的结构建模

    公开(公告)号:US20150070387A1

    公开(公告)日:2015-03-12

    申请号:US14250544

    申请日:2014-04-11

    Abstract: Techniques are presented for constructing a digital representation of a physical environment. In some embodiments, a method includes obtaining image data indicative of the physical environment; receiving gesture input data from a user corresponding to at least one location in the physical environment, based on the obtained image data; detecting at least one discontinuity in the physical environment near the at least one location corresponding to the received gesture input data; and generating a digital surface corresponding to a surface in the physical environment, based on the received gesture input data and the at least one discontinuity.

    Abstract translation: 提出了构建物理环境的数字表示的技术。 在一些实施例中,一种方法包括获得指示物理环境的图像数据; 基于所获得的图像数据,从与所述物理环境中的至少一个位置对应的用户接收手势输入数据; 检测与所接收的手势输入数据相对应的至少一个位置附近的物理环境中的至少一个不连续性; 以及基于所接收的手势输入数据和所述至少一个不连续性,生成对应于所述物理环境中的表面的数字表面。

    SENSOR-AIDED WIDE-AREA LOCALIZATION ON MOBILE DEVICES
    45.
    发明申请
    SENSOR-AIDED WIDE-AREA LOCALIZATION ON MOBILE DEVICES 有权
    传感器辅助移动设备上的宽域定位

    公开(公告)号:US20140016821A1

    公开(公告)日:2014-01-16

    申请号:US13719012

    申请日:2012-12-18

    Abstract: A mobile device uses vision and orientation sensor data jointly for six degree of freedom localization, e.g., in wide-area environments. An image or video stream is captured while receiving geographic orientation data and may be used to generate a panoramic cylindrical map of an environment. A bin of model features stored in a database is accessed based on the geographic orientation data. The model features are from a pre-generated reconstruction of the environment produced from extracted features from a plurality of images of the environment. The reconstruction is registered to a global orientation and the model features are stored in bins based on similar geographic orientations. Features from the panoramic cylindrical map are matched to model features in the bin to produce a set of corresponding features, which are used to determine a position and an orientation of the camera.

    Abstract translation: 移动设备使用视觉和姿态传感器数据联合进行六自由度定位,例如在广域环境中。 捕获图像或视频流,同时接收地理取向数据,并且可以用于生成环境的全景圆柱图。 基于地理位置数据访问存储在数据库中的模型特征的一个bin。 模型特征来自从环境的多个图像的提取特征产生的环境的预先生成的重建。 重建被注册到全局方向,并且基于类似的地理位置将模型特征存储在箱中。 全景圆柱形地图的特征与仓中的模型特征相匹配,以产生一组相应的特征,用于确定相机的位置和方向。

    Keypoint detection and feature descriptor computation

    公开(公告)号:US12236631B2

    公开(公告)日:2025-02-25

    申请号:US17484601

    申请日:2021-09-24

    Abstract: Systems and techniques are described herein for processing frames. The systems and techniques can be implemented by various types of systems, such as by an extended reality (XR) system or device. In some cases, a process can include obtaining feature information associated with a feature in a current frame, wherein the feature information is based on one or more previous frames; determining an estimated pose of the apparatus associated with the current frame; obtaining a distance associated with the feature in the current frame; and determining an estimated scale of the feature in the current frame based on the feature information associated with the feature, the estimated pose, and the distance associated with the feature.

    Virtual private space for extended reality

    公开(公告)号:US11481931B2

    公开(公告)日:2022-10-25

    申请号:US16922945

    申请日:2020-07-07

    Abstract: Systems, methods, and non-transitory media are provided for generating virtual private spaces for extended reality (XR) experiences. An example method can include initiating a virtual session for presenting virtual content and identifying, for the virtual session, a portion of a physical space for use as a virtual private space for presenting at least a portion of the virtual content. The method can include outputting boundary information defining a boundary of the virtual private space, and generate at least the portion of the virtual content for the virtual private space. At least the portion of the virtual content is viewable in the virtual private space by one or more authorized users of the virtual session and is not viewable by one or more unauthorized users.

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