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    • 4. 发明申请
    • A METHOD OF DETECTING OBJECTS WITHIN A 3D ENVIRONMENT
    • 一种在3D环境中检测物体的方法
    • WO2016170333A1
    • 2016-10-27
    • PCT/GB2016/051099
    • 2016-04-21
    • OXFORD UNIVERSITY INNOVATION LIMITED
    • POSNER, IngmarWANG, Zeng
    • G06K9/00G06K9/62
    • G06T7/73G06K9/00214G06K9/6203G06T2207/10028G06T2207/20081G06T2207/30252
    • A method and system for detecting objects within a three-dimensional (3D) environment, comprising obtaining a 3D point-cloud representation of the environment, the point-cloud comprising a set of point locations, and converting the point-cloud to a 3D feature grid, wherein converting the point-cloud to the 3D feature grid comprises discretising the 3D space into cells according to a grid size; determining which cells contain points from the 3D point-cloud; and mapping any that do to a feature vector; and mapping any that do not to a zero feature vector. The method further comprises generating a detection window sized to contain an integral number of the cells and having a set of positions which can be occupied; calculating a detection score for each of the positions by: casting a vote for each cell within the detection window into which at least one point falls, wherein each vote is calculated using the feature vector of the cell and a weighting vector; and summing the votes, and determining whether each position contains an object of interest based on the detection score, each detection window with a detection score greater than a threshold being classified as containing an object of interest.
    • 一种用于检测三维(3D)环境内的物体的方法和系统,包括获得所述环境的3D点云表示,所述点云包括一组点位置,以及将所述点云转换为3D特征 网格,其中将点云转换为3D特征网格包括根据网格尺寸将3D空间离散成单元格; 确定哪些单元格包含来自3D点云的点; 并将任何对映射到特征向量; 并将任何不为零特征向量映射。 该方法还包括生成检测窗口,其尺寸被设计成容纳整数个单元并且具有可被占用的一组位置; 通过以下方式计算每个位置的检测分数:对至少一个点落入的检测窗口内的每个单元进行投票,其中使用单元格的特征向量和加权向量来计算每个投票; 并且对所述投票进行求和,并且基于所述检测分数确定每个位置是否包含感兴趣对象,具有大于阈值的检测分数的每个检测窗口被分类为包含感兴趣对象。
    • 8. 发明申请
    • 3D OBJECT SEGMENTATION
    • 3D对象分段
    • WO2016111841A1
    • 2016-07-14
    • PCT/US2015/067133
    • 2015-12-21
    • QUALCOMM INCORPORATED
    • VRCELJ, BojanLEE, Young HoonREITMAYR, Gerhard
    • G06T7/00
    • H04N13/204G01B11/22G06K9/00214G06K9/34G06K9/6215G06T7/11G06T7/12G06T7/13G06T7/136G06T7/50G06T2207/10012G06T2207/10021G06T2207/10028G06T2207/30244H04N2013/0092
    • Disclosed are a system, apparatus, and method for 3D object segmentation within an environment. Image frames are obtained from one or more depth cameras or at different times and planar segments are extracted from data obtained from the image frames. Candidate segments that comprise a non-planar object surface are identified from the extracted planar segments. In one aspect, certain extracted planar segments are identified as comprising a non-planar object surface, and are referred to as candidate segments. Confidence of preexisting candidate segments are adjusted in response to determining correspondence with a candidate segment. In one aspect, one or more preexisting candidate segments are determined to comprise a surface of a preexisting non-planar object hypothesis. Confidence in the non-planar object hypothesis is updated in response to determining correspondence with a candidate segment.
    • 公开了一种用于环境内的3D对象分割的系统,装置和方法。 图像帧从一个或多个深度相机获得或在不同时间获得,并且从从图像帧获得的数据中提取平面片段。 从提取的平面段识别构成非平面物体表面的候选段。 在一个方面,某些提取的平面段被识别为包括非平面物体表面,并且被称为候选段。 响应于确定与候选片段的对应关系,调整预先存在的候选片段的置信度。 在一个方面,一个或多个预先存在的候选片段被确定为包括预先存在的非平面对象假设的表面。 响应于确定与候选片段的对应关系,更新非平面物体假设的置信度。