Interdigital Vc Holdings, Inc.

Thomson Licensing

Interdigital Ce Patent Holdings, Sas

Joan Llach Pinsach

Celine Guede

Kangying Cai

Julien Ricard

Yannick Olivier

Pierre Andrivon

Sebastien Lasserre

David Touze

Philippe Robert

Jean-Claude Chevet

Mary-Luc Champel

Matthieu Fradet

Marie-Jean Colaitis

Loic Fontaine

David Gendron

Franck Aumont

Alexandre Deceneux

Céline Guede

At least one embodiment relates to a method comprising encoding a projection mode associated with an image region of a first depth image, said projection mode indicating if said image region stores either the minimum or the maximum depth value of at least one orthogonally projected 3D point of the point cloud along a same projection direction; and encoding said depth minimum and maximum depth values as a function of said projection mode.

Method for encoding depth values of a set of 3D points once orthogonally projected into at least one image region of a projection plane

At least one embodiment relates to a method for padding a first depth image representative of depth values of nearer points of a point cloud frame and a second depth image representative of depth values of farther points of a point cloud frame. The method also comprises encoding a video stream including a time-interleaving of said encoded first and second images. There is also provided a method comprising decoding a video stream to provide a first depth image representative of depth values of nearer points of a point cloud frame and a second depth image representative of depth values of farther points of a point cloud frame; and filtering pixel values of the second depth image by using pixel values of the first depth image.

Processing a point cloud

At least one embodiment relates to a method for adding at least one 3D sample to a point cloud frame and for assigning a color-coding mode to said at least one 3D sample, said color-coding mode indicating if color information associated with said at least one 3D sample is explicitly encoded in a bitstream or if said color information is implicit.

This method comprises: —orthogonally projecting at least one point of a point cloud along projection lines; and —for at least two points of a same projection line, signaling in a bitstream whether a position of said projection line between a nearer and a farther points of said projection line is occupied or not.

Method and apparatus for encoding/decoding a point cloud representing a 3D object

The present principles relate to a method and device method for encoding depth values of orthogonally projected points of a point cloud onto a projection plane. The present principles also relate to a method and device for decoding a point cloud, a computer readable program and a video signal.

Method and device for encoding the geometry of a point cloud

Described are methods and devices for applying a color gamut mapping process on a first image to generate a second image, where the content of the first and second images is similar but the respective color spaces of the first and second images are different. The color gamut mapping process may be controlled using a color gamut mapping mode obtained from a bitstream where the color gamut mapping mode belongs to a set comprising at least two preset modes and an explicit parameters mode. If the obtained color gamut mapping mode is the explicit parameters mode and the color gamut mapping process is not enabled for the explicit parameters mode, the color gamut mapping process may be controlled by a substitute color gamut mapping mode determined from additional data.

Method and device for generating a second image from a first image

This method for hole filling of a point cloud having at least one hole comprises:&#x2014;detecting () boundary points of the point cloud;&#x2014;grouping () the detected boundary points in boundary regions based on their spatial adjacency;&#x2014;covering () each boundary region with at least one plane; and&#x2014;inserting () new points in the point cloud using the planes covering the boundary regions.

Method and device for hole filling of a point cloud

Method and device for coding the geometry of a point cloud

This method for up-sampling a point cloud representing a 3D object, comprises: &#x2014;detecting () points belonging to at least one under-sampled region of the point cloud on the basis of at least one desirable sampling rate (K); &#x2014;obtaining (), for each detected point, an associated tangent plane; &#x2014;inserting () 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.

Method and device for up-sampling a point cloud

In a staggercasting system, a receiver estimates a delivery time of a packet from a main stream and, if the packet from the main stream is not received at the estimated delivery time, the receiver substitutes a corresponding packet from the stagger stream. As a result, a loss can be detected quicker since the receiver does not have to wait until detection of a missing sequence number and, therefore, the receiver can accommodate the time of presentation such that the user does not suffer a loss in quality of service.

Method and apparatus for detecting packet loss in staggercasting

A method for processing a current image of an image sequence is disclosed. According to the invention, the method includes:

Method for processing a current image of an image sequence, and corresponding computer program and processing device

The invention concerns providing for each media package a plurality of spatial composition datasets defining the initial spatial rendering of the media entities of the media package and for each spatial composition datasets a plurality of temporal composition datasets. The invention may be applied to MMT data.

Growing community of inventors

Cesson-Sevigne, France

Joan Llach Pinsach