公开(公告)号：EP3467784A1

公开(公告)日：2019-04-10

申请号：EP17306347.0

申请日：2017-10-06

申请人： Thomson Licensing

发明人： CAI, Kangying ,  GUEDE, Céline ,  LLACH PINSACH, Joan ,  LASSERRE, Sébastien

IPC分类号： G06T17/00

摘要： This method for up-sampling a point cloud representing a 3D object, comprises:
- detecting (2) points belonging to at least one under-sampled region of the point cloud on the basis of at least one desirable sampling rate (K);
- obtaining (12), for each detected point, an associated tangent plane;
- inserting (14) in the point cloud at least one neighboring point of each detected point if a distance between the neighboring point and the tangent plane associated with the detected point is less than a first threshold.

公开(公告)号：EP3418976A1

公开(公告)日：2018-12-26

申请号：EP17305770.4

申请日：2017-06-22

申请人： Thomson Licensing

发明人： LASSERRE, Sébastien ,  CAI, Kangying

IPC分类号： G06T9/40 ,  G06T9/00 ,  H04N19/593

CPC分类号： G06T9/40 ,  G06T9/00 ,  H04N19/593 ,  H04N19/96

摘要： This method for encoding a point cloud comprises:
- segmenting (2) the point cloud into first plane-like patches;
- projecting (10) the first plane-like patches to projected planes using inverse projection parameters;
- encoding (12) the projected planes;
- determining (18) sparse points in the point cloud; and
- encoding (20) the sparse points using an octree-decomposition.

公开(公告)号：EP3154265B1

公开(公告)日：2018-12-05

申请号：EP16192180.4

申请日：2016-10-04

申请人： Thomson Licensing

发明人： SERRÉ, Catherine ,  STAUDER, Jurgen ,  LASSERRE, Sébastien

IPC分类号： H04N19/00

CPC分类号： H04N9/64 ,  G06T2207/10016 ,  G06T2207/10024 ,  G06T2207/20008

摘要： According to this method, upon reception of a color transform (T 2 ) associated with a main sequence (S 2 ), a transition sequence (ST 1-2 ) is generated from successive images of this main sequence such that the first image of this transition sequence is an image received after reception of this color transform (T 2 ), transition color transforms associated with images of said transition sequence (ST 1-2 ) are generated by blending a color transform (T 1 ) associated with a previous main sequence (S 1 ) or no color transform (U) with the second color transform (T 2 ), and each image of this transition sequence (ST 1-2 ) is processed using the transition color transform associated with said image.

公开(公告)号：EP3261348A1

公开(公告)日：2017-12-27

申请号：EP17176402.0

申请日：2017-06-16

申请人： Thomson Licensing

发明人： KERBIRIOU, Paul ,  DOYEN, Didier ,  LASSERRE, Sébastien

IPC分类号： H04N19/597 ,  H04N19/593 ,  H04N19/463 ,  H04N19/59

CPC分类号： H04N19/70 ,  G06T9/20 ,  H04N19/132 ,  H04N19/167 ,  H04N19/186 ,  H04N19/44 ,  H04N19/463 ,  H04N19/59 ,  H04N19/593 ,  H04N19/597

摘要： The present invention relates to the transmission of sets of data and metadata and more particularly to the transmission of light-field contents. Light-field data take up large amounts of storage space which makes storage cumbersome and processing less efficient. In addition light-field acquisition devices are extremely heterogeneous and each camera has its own proprietary file format. Since acquired light-field data from different cameras have a diversity of formats a complex processing is induced on the receiver side. To this end, it is proposed a method for encoding a signal representative of a light-field content in which the parameters representing the rays of light sensed by the different pixels of the sensor are mapped on the sensor. A second set of encoded parameters are used to reconstruct the light-field content from the parameters representing the rays of light sensed by the different pixels of the sensor.

摘要翻译： 本发明涉及数据和元数据集的传输，更具体地涉及光场内容的传输。 光场数据占用大量存储空间，这使得存储繁琐且处理效率降低。 此外，光场采集设备极其异构，每台相机都有自己的专有文件格式。 由于来自不同摄像机的采集的光场数据具有多种格式，所以在接收机侧引起复杂的处理。 为此，提出了一种用于对表示光场内容的信号进行编码的方法，其中表示由传感器的不同像素感测到的光线的参数映射在传感器上。 使用第二组编码参数来从表示由传感器的不同像素感测到的光线的参数重建光场内容。

公开(公告)号：EP3249930A1

公开(公告)日：2017-11-29

申请号：EP17171783.8

申请日：2017-05-18

申请人： Thomson Licensing

发明人： LASSERRE, Sébastien ,  GALPIN, Franck ,  ANDRIVON, Pierre

IPC分类号： H04N21/2343 ,  G06T3/00 ,  H04N19/70

摘要： The present disclosure relates to methods, apparatus or systems for generating, transmitting and decoding a backward compatible immersive video stream. The stream is carrying data representative of an immersive video, composed of a frame organized according to a layout comprising a first area encoded according to a rectangle mapping, a second area encoded according to a mapping transitory from the rectangular mapping to an immersive mapping and a third area encoded according to the immersive mapping. In order to be backward compatible, the stream further comprises a first information representative of the size and the location of the first area within the video frame, and a second information comprising at least the type of the selected layout, the field of view of first part, of the size of said second area within the video frame and a reference direction.

摘要翻译： 本公开涉及用于生成，发送和解码后向兼容拟真视频流的方法，装置或系统。 该流携带表示由根据布局组织的帧的数据表示的沉浸式视频的数据，所述布局包括根据矩形映射编码的第一区域，根据从矩形映射暂时映射到沉浸映射的映射编码的第二区域以及 根据沉浸式映射编码的第三区域。 为了向后兼容，该流还包括表示视频帧内的第一区域的大小和位置的第一信息，以及至少包括所选择的布局的类型，第一视野 部分视频帧内的所述第二区域的大小和参考方向。

公开(公告)号：EP3493158A1

公开(公告)日：2019-06-05

申请号：EP17306698.6

申请日：2017-12-04

申请人： THOMSON LICENSING

发明人： LASSERRE, Sébastien ,  RICARD, Julien ,  GUEDE, Céline

IPC分类号： G06T9/40 ,  H04N19/597 ,  H04N19/147 ,  H04N19/96 ,  H04N19/593 ,  H04N19/11 ,  H04N19/107 ,  H04N19/19 ,  H04N19/54

摘要： A method for encoding the geometry of a point cloud (IPC) representing a 3D object comprising:
a) determining (120) if a local octree-based structure (O k ) is associated with an encompassing cube including at least one point of the point cloud (IPC);
b) encoding (130) a first leaf node information data (FLID) indicating if a local octree-based structure (O k ) has been determined for said encompassing cube (C);
c) if said first leaf node information data (FLID) indicates that a local octree-based structure (O k ) has been determined for said encompassing cube (C),
d) encoding (140) an octree information data (SOID) representative of said determined local octree-based structure (Ok); and
e) encoding a (150) local coding model information data (IND) representing a local coding model defining a set of points resulting from a processing of a part of the point cloud.

公开(公告)号：EP3373583A1

公开(公告)日：2018-09-12

申请号：EP17305237.4

申请日：2017-03-07

申请人： Thomson Licensing

发明人： LASSERRE, Sébastien ,  CAI, Kangying

IPC分类号： H04N19/154

CPC分类号： H04N19/154 ,  H04N19/597

摘要： Method for measuring a quality of a result of a processing (10) of a first point cloud (PC1) comprising a plurality of points, in which each point is defined by its spatial location and by at least one attribute, in which the processing (10) transforms the first point cloud (PC1) into a second point cloud (PC2), wherein the method includes:
- analyzing the first point cloud (PC1) to determine a shape of said first point cloud (PC1);
- selecting a number N of viewpoints distributed over a set of surfaces centered on the first point cloud (PC1);
- evaluating N first images corresponding to projection views of the first point cloud (PC1) using the N viewpoints and N second images corresponding to projection views of the second point cloud (PC2) using the N viewpoints; and
- comparing the N first images and the N second images.

公开(公告)号：EP3341918A1

公开(公告)日：2018-07-04

申请号：EP16753355.3

申请日：2016-08-16

申请人： Thomson Licensing

发明人： LELEANNEC, Fabrice ,  GALPIN, Franck ,  LASSERRE, Sébastien

IPC分类号： G06T9/00

CPC分类号： H04N19/44 ,  G06T9/00 ,  H04N19/154 ,  H04N19/186 ,  H04N19/70

摘要： A decoding method is disclosed that comprises: —decoding at least one luma component and two chroma components from a bitstream; —decoding color metadata, said metadata comprising at least one of: a syntax element representative of a color conversion type, a syntax element representative of an inverse transfer type and a syntax element representative of a color conversion matrix; —color converting the luma and/or chroma components responsive to said syntax element representative of a color conversion type; —applying an inverse transfer operation on the color converted luma and/or chroma to obtain a first, a second and a third component responsive to syntax element representative of an inverse transfer type; and —applying a color conversion matrix responsive to said syntax element representative of a color conversion matrix to obtain and RGB high dynamic range picture.

公开(公告)号：EP3261347A1

公开(公告)日：2017-12-27

申请号：EP16305757.3

申请日：2016-06-22

申请人： Thomson Licensing

发明人： KERBIRIOU, Paul ,  DOYEN, Didier ,  LASSERRE, Sébastien

IPC分类号： H04N19/597 ,  H04N19/593 ,  H04N19/463 ,  H04N19/59

CPC分类号： H04N19/70 ,  G06T9/20 ,  H04N19/132 ,  H04N19/167 ,  H04N19/186 ,  H04N19/44 ,  H04N19/463 ,  H04N19/59 ,  H04N19/593 ,  H04N19/597

摘要： The present invention relates to the transmission of sets of data and metadata and more particularly to the transmission of light-field contents. Light-field data take up large amounts of storage space which makes storage cumbersome and processing less efficient. In addition light-field acquisition devices are extremely heterogeneous and each camera has its own proprietary file format. Since acquired light-field data from different cameras have a diversity of formats a complex processing is induced on the receiver side. To this end, it is proposed a method for encoding a signal representative of a light-field content in which the parameters representing the rays of light sensed by the different pixels of the sensor are mapped on the sensor. A second set of encoded parameters are used to reconstruct the light-field content from the parameters representing the rays of light sensed by the different pixels of the sensor.

公开(公告)号：EP3154265A1

公开(公告)日：2017-04-12

申请号：EP16192180.4

申请日：2016-10-04

申请人： Thomson Licensing

发明人： SERRÉ, Catherine ,  STAUDER, Jurgen ,  LASSERRE, Sébastien

IPC分类号： H04N19/00

CPC分类号： H04N9/64 ,  G06T2207/10016 ,  G06T2207/10024 ,  G06T2207/20008

摘要： According to this method, upon reception of a color transform (T 2 ) associated with a main sequence (S 2 ), a transition sequence (ST 1-2 ) is generated from successive images of this main sequence such that the first image of this transition sequence is an image received after reception of this color transform (T 2 ), transition color transforms associated with images of said transition sequence (ST 1-2 ) are generated by blending a color transform (T 1 ) associated with a previous main sequence (S 1 ) or no color transform (U) with the second color transform (T 2 ), and each image of this transition sequence (ST 1-2 ) is processed using the transition color transform associated with said image.

摘要翻译： 与主序列（S 2），过渡序列（ST 1-2）相关联。根据该方法，在一个颜色的接收变换（T 2）是从检查这个主序列中的连续图像生成确实的这个第一图像 转变序列是这种颜色的接收之后接收变换（T 2）通过共混颜色变换，过渡颜色变换与所述过渡序列的图像（ST 1-2）相关联的所生成的图像（T 1）与先前的主序列相关联 （S 1）或无的ColorTransform（U）与所述第二的ColorTransform（T 2），并且该转变序列（ST 1-2）中的每个图像是利用与所述图像相关联的过渡的ColorTransform处理。