公开(公告)号：US11665369B2

公开(公告)日：2023-05-30

申请号：US15629951

申请日：2017-06-22

Applicant: INTERDIGITAL CE PATENT HOLDINGS, SAS

Inventor： Paul Kerbiriou ,  Didier Doyen ,  Sebastien Lasserre

IPC: H04N19/70 ,  H04N19/597 ,  H04N19/463 ,  H04N19/593 ,  H04N19/59 ,  H04N19/132 ,  H04N19/167 ,  H04N19/186 ,  H04N19/44 ,  G06T9/20

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

Abstract: The present disclosure 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：US11202052B2

公开(公告)日：2021-12-14

申请号：US16622269

申请日：2018-06-07

Applicant: InterDigital CE Patent Holdings, SAS

Inventor： Paul Kerbiriou ,  Valerie Allie ,  Tristan Langlois

IPC: H04N13/122 ,  H04N13/383 ,  G06T15/20

Abstract: The present disclosure concerns a method for displaying, on a 2D display device, a content derived from 4D light field data, based on a viewing position of a user. The 4D light field data corresponds to data acquired by either several cameras or by a plenoptic device. The method comprises: obtaining a volume in front of said 2D display device in which no disocclusions are present, said volume being defined according to optical and geometry parameters of an acquisition device that has acquired said 4D light field data, a size of a screen of said 2D display device, and an anchor plane in said content, said anchor plane being perceived as static in case of movement of a user relative to said 2D display device; determining a modified volume from said volume, comprising modifying a size of said volume, for modifying possible movements of a user positioned within the modified volume compared to movements of said user within said volume; providing means for guiding said user within said modified volume according to said viewing position of said user.

公开(公告)号：US11092820B2

公开(公告)日：2021-08-17

申请号：US16313418

申请日：2017-06-30

Applicant: INTERDIGITAL CE PATENT HOLDINGS

Inventor： Laurent Blonde ,  Arno Schubert ,  Guillaume Boisson ,  Didier Doyen ,  Paul Kerbiriou ,  Olivier Bureller ,  Valter Drazic

IPC: G02B30/50 ,  H04N13/243 ,  H04N13/106 ,  G02B30/27 ,  G06T15/50

Abstract: There are several types of plenoptic devices having their proprietary file format. At present there is no standard supporting the acquisition and transmission of multidimensional information for an exhaustive over-view of the different parameters upon which a light-field depends. As such acquired light-field data for different cameras have a diversity of formats. The notion of pixel beam, which represents a volume occupied by a set of rays of light in an object space of an optical system of a camera is thus introduced. The method according to the invention enables to provide data representative of a collection of pixel beams describing a first optical system that is agnostic since these data are obtained by imaging the collection of pixel beams through a second optical system. Such data representative of a collection of pixel beams enable the generation of parametrized output images from which post-processing.

公开(公告)号：US10455169B2

公开(公告)日：2019-10-22

申请号：US15379710

申请日：2016-12-15

Applicant: INTERDIGITAL CE PATENT HOLDINGS

Inventor： Mozhdeh Seifi ,  Valter Drazic ,  Paul Kerbiriou

IPC: G06T5/00 ,  H04N9/07 ,  H04N9/64 ,  G06T7/557 ,  H04N5/225 ,  H04N5/238 ,  H04N5/341 ,  H04N5/357

Abstract: The disclosure addresses the vignetting effect caused on an image captured by lightfield camera. A method to compensate for the vignetting effect for a lightfield camera comprising an image sensor array including plurality of photosites. The method includes the operations of obtaining luminance values from the each photosite; obtaining a set of weight values for compensating the vignetting effect for the each photosite being associated with a present setting of the lightfield camera; and changing the luminance values of the each photosite based on the obtained a set of the weight values.