公开(公告)号：WO2022261605A2

公开(公告)日：2022-12-15

申请号：PCT/US2022/072707

申请日：2022-06-02

Applicant: TENCENT AMERICA LLC

Inventor： ZHANG, Xiang ,  GAO, Wen ,  LIU, Shan

IPC: G06K9/62 ,  G06T9/40 ,  G06T17/05 ,  G06T7/60 ,  G06T7/73 ,  G06T17/30 ,  H04N19/10 ,  H04N19/59 ,  H04N19/70 ,  G06F1/03 ,  G06F5/01 ,  G06F7/50 ,  G06F7/535 ,  G06T9/001

Abstract: Aspects of the disclosure provide methods and apparatuses for point cloud compression and decompression. In some examples, an apparatus for point cloud compression/decompression includes processing circuitry. The processing circuitry determines to use a prediction mode for coding (encoding/ decoding) information associated with a current point in a point cloud. In the prediction mode, the information associated with the current point is predicted based on one or more neighbor points of the current point. The processing circuitry calculates, using integer operations, a distance-based weighted average value based on distances of the one or more neighbor points to the current point, and determines the information associated with the current point based on the distance-based weighted average value.

公开(公告)号：WO2022158834A1

公开(公告)日：2022-07-28

申请号：PCT/KR2022/000951

申请日：2022-01-19

Applicant: 삼성전자 주식회사

Inventor： 페리크리스토퍼에이 ,  시옹인진 ,  관하이후이

IPC: G06T17/30 ,  G06T7/593 ,  G06T7/11 ,  G06T19/00

Abstract: 장면 데이터를 획득하는 단계, 상기 장면 데이터의 공간적으로 정의된 서브세트를 포함하는 제1 검출 영역을 정의하는 단계, 상기 제1 검출 영역 내의 포인트 클라우드의 포인트에 기초하여 평면 모델을 정의하는 단계, 상기 평면 모델을 기반으로 평면을 정의하는 단계, 상기 포인트 클라우드의 포인트들에 기초하여 상기 평면의 사용 가능한 크기의 적어도 하나의 값을 결정하는 단계, 디지털 객체의 특성 크기의 적어도 하나의 값을 상기 평면의 사용 가능한 크기의 상기 적어도 하나의 값과 비교하는 단계, 및 상기 평면 모델에 기초하여 상기 평면 상에 위치한 상기 디지털 객체를 포함하는 디스플레이를 생성하는 단계를 포함하는 타겟 평면 검출 및 공간 추정을 위한 방법 및 장치를 개시한다.

公开(公告)号：WO2022003513A1

公开(公告)日：2022-01-06

申请号：PCT/IB2021/055651

申请日：2021-06-25

Applicant: WACOM CO., LTD.

Inventor： SOSANYA, Oluwaseyi ,  PAREDES-FUENTES, Daniela ,  THOMAS, Daniel

IPC: G06F3/01 ,  G06F3/0346 ,  G02B27/017 ,  G06T15/005 ,  G06T17/20 ,  G06T17/30 ,  G06T19/006 ,  G06T2215/16

Abstract: A method and system for three-dimensional (3D) surface sketching are provided. A 3D scanner scans an outer surface of a physical object and outputs data representative of the outer surface. A processor generates, based on the received data, a 3D model of the object and outputs a 3D rendering of the object. A display displays the 3D rendering of the object. An input device physically traces over a portion of the outer surface of the object and a tracking device tracks a positioning of the input device as the input device physically traces over the portion of the outer surface of the object. The processor receives data representative of at least one spatial position of the input device, augments the 3D rendering of the object based at least in part on the data and outputs the augmented 3D rendering to the display.

公开(公告)号：WO2021114026A1

公开(公告)日：2021-06-17

申请号：PCT/CN2019/124037

申请日：2019-12-09

Applicant: 深圳大学

Inventor： 李东 ,  敖晟 ,  田劲东 ,  田勇

IPC: G06T17/00 ,  G06T17/30 ,  G06T7/00

Abstract: 一种基于局部参考坐标系的3D形状匹配方法及装置，其中方法包括：在获取3D点云及特征点之后，将特征点集投影至一平面，并利用3D点到特征点的距离、3D点到投影点的距离、3D点到其一环邻域点的平均距离中的至少一个因子来对投影点做特征变换以获得比投影点集具有更大方差方向的点分布，并基于进行特征变换后的点分布来确定局部参考坐标系；基于这种局部参考坐标系而建立的3D局部特征描述符可以更鲁棒的对3D局部表面信息进行编码，从而获得更好的3D形状匹配效果。

公开(公告)号：WO2021009515A1

公开(公告)日：2021-01-21

申请号：PCT/GB2020/051715

申请日：2020-07-17

Applicant: OXFORD UNIVERSITY INNOVATION LIMITED

Inventor： BARBA CANCHO, Daniel ,  MARTINEZ ALABORT, Enrique ,  REED, Roger Charles

IPC: A61F2/28 ,  A61L27/56 ,  G06T17/30

Abstract: A scaffold for bone ingrowth comprising: a monolithic structure; and at least a portion of the monolithic structure having a plurality of open cells including a plurality of first open cells intermixed with a plurality of second open cells throughout the portion; wherein the plurality of open cells in the monolithic structure have a bimodal cell size frequency distribution with one mode being associated with the plurality of first open cells and the other mode being associated with the plurality of second open cells.

公开(公告)号：WO2018183778A1

公开(公告)日：2018-10-04

申请号：PCT/US2018/025298

申请日：2018-03-29

Applicant: MAGIC LEAP, INC.

Inventor： BABU J D, Praveen

IPC: G06T7/60 ,  G06T17/05 ,  G06T17/30

Abstract: A method is disclosed, the method comprising the steps of receiving, from a first client application, first graphical data comprising a first node; receiving, from a second client application independent of the first client application, second graphical data comprising a second node; and generating a scenegraph, wherein the scenegraph describes a hierarchical relationship between the first node and the second node.

公开(公告)号：WO2017185730A1

公开(公告)日：2017-11-02

申请号：PCT/CN2016/107179

申请日：2016-11-25

Applicant: 浙江大学

Inventor： 黄劲 ,  鲍虎军 ,  许威威 ,  方贤忠

IPC: G06T17/30

Abstract: 一种基于闭形式Polycube的六面体网格生成方法。将表面三角形网格转换成四面体网格，将四面体网格用切割面分割成新模型，获取初始的三维标架场，根据表面法向约束生成内部无奇异线的光滑标架场，根据光滑标架场获取切割面上的转换关系，根据标架场在切割后的模型上泊松优化得到初始参数化结果，并为初值运用一范数优化得到最终闭形式Polycube，运用混合整数优化，得到最终参数化结果，抽取六面体网格。该方法能从三角形网格自动生成六面体网格，该方法与模型的初始位置无关，而且能更好地满足模型的特征约束，对于具有复杂拓扑结构的模型，能获得质量较高的六面体网格。

公开(公告)号：WO2016112019A1

公开(公告)日：2016-07-14

申请号：PCT/US2016/012197

申请日：2016-01-05

Applicant: OCULUS VR, LLC

Inventor： KANTOR, Niv ,  GROSSINGER, Nadav ,  ROMANO, Nitay

IPC: G06T17/10 ,  G06T17/20 ,  G06T17/30 ,  G06T15/50 ,  G06T15/10 ,  H04N13/04

CPC classification number: G06T7/0057 ,  G06K9/00201 ,  G06K9/00375 ,  G06K2209/40 ,  G06T5/005 ,  G06T7/13 ,  G06T7/521 ,  G06T2207/10028

Abstract: A method and system for estimating edge data in patterned light analysis are provided herein. The method may include: obtaining an original depth map of an object generated based on structured light analysis of a pattern comprising stripes; determining portions of the original depth map in which z-axis value is inaccurate given an edge of the object; detecting geometric feature of the object associated with the determined portion, based on neighboring portions of the depth map; and estimating the missing z-axis data along the edge of the object, based on the detecting geometric feature of the object.

Abstract translation: 本文提供了用于估计图案光分析中的边缘数据的方法和系统。 该方法可以包括：获得基于包括条纹的图案的结构光分析生成的对象的原始深度图; 确定在给定对象的边缘的情况下z轴值不准确的原始深度图的部分; 基于所述深度图的相邻部分来检测与所确定的部分相关联的对象的几何特征; 并且基于对象的检测几何特征来估计沿对象边缘的缺失的z轴数据。

公开(公告)号：WO2015131369A1

公开(公告)日：2015-09-11

申请号：PCT/CN2014/072987

申请日：2014-03-06

Applicant: NOKIA TECHNOLOGIES OY ,  NOKIA (CHINA) INVESTMENT CO., LTD.

Inventor： WANG, Kongqiao ,  LIU, Yingfei ,  WANG, Hao

IPC: G06T17/30 ,  G06T5/50 ,  G06K15/00

CPC classification number: G06T11/60 ,  G06T3/0087 ,  G06T19/20 ,  G06T2210/12 ,  G06T2219/2004 ,  G06T2219/2016

Abstract: A method, apparatus and computer program product are provided in order to construct a visual representation of a video including one or more segmented objects from the frames of the video. In the context of a method, an object that appears in a plurality of frames of a video is identified. The method also includes segmenting the object from one or more frames of the video to create one or more segmented objects. The method further includes constructing a three-dimensional visual representation of the video including a representation of at least one frame of the video that includes the object. The three-dimensional visual representation also includes the one or more segmented objects positioned in a time sequence relative to the at least one frame of the video.

Abstract translation: 提供了一种方法，装置和计算机程序产品，以便从视频的帧构建包括一个或多个分段对象的视频的视觉表示。 在方法的上下文中，识别出现在视频的多个帧中的对象。 该方法还包括从视频的一个或多个帧分割对象以创建一个或多个分段对象。 该方法还包括构建视频的三维视觉表示，其包括包括对象的至少一帧视频的表示。 三维视觉表示还包括相对于视频的至少一个帧以时间顺序定位的一个或多个分段对象。

公开(公告)号：WO2015074575A1

公开(公告)日：2015-05-28

申请号：PCT/CN2014/091704

申请日：2014-11-19

Applicant: 北京国双科技有限公司

Inventor： 黄佳嘉 ,  何鑫 ,  刘合翔

IPC: G06T17/30 ,  G06T7/00

CPC classification number: G06T11/206

Abstract: 一种获取立体热力图的方法及装置。其中，该方法包括：获取网页页面的平面热力图的数据，平面热力图的数据包括网页页面的点击数据；基于点击获取层建立三维坐标系，获取轴测图；将平面热力图的数据显示在轴测图上，获取立体热力图。能够实现可以直观显示大数据的数量级，并且能够增加良好的观测和使用体验。