公开(公告)号：US11956473B2

公开(公告)日：2024-04-09

申请号：US17992159

申请日：2022-11-22

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Edouard Francois ,  Pierre Andrivon ,  Franck Galpin ,  Fabrice Leleannec ,  Michel Kerdranvat

IPC: H04N19/70 ,  H04N19/103 ,  H04N19/157 ,  H04N19/176 ,  H04N19/503

CPC classification number: H04N19/70 ,  H04N19/103 ,  H04N19/157 ,  H04N19/176 ,  H04N19/503

Abstract: Video coding tools can be controlled by including syntax in a video bitstream that makes better use of video decoding resources. An encoder inserts syntax into a video bitstream to enable a decoder to parse the bitstream and easily control which tools combinations are enabled, which combinations are not permitted, and which tools are activated for various components in a multiple component bitstream, leading to potential parallelization of bitstream decoding.

公开(公告)号：US11947116B2

公开(公告)日：2024-04-02

申请号：US17440911

申请日：2020-03-18

Applicant: InterDigital VC Holdings, Inc.

Inventor： Pierre Andrivon ,  Franck Galpin ,  Fabrice Urban

IPC: G02B27/01

CPC classification number: G02B27/0172 ,  G02B2027/011 ,  G02B2027/0123 ,  G02B2027/014

Abstract: A method and an apparatus are defined for displaying images on a flexible display in a head-mountable device (HMD). One or more flexible display devices may be inserted in the HMD. The one or more flexible display devices may be constrained by the HMD to take a particular curved form and wrap the field of view (FOV) of images displayed on the one or more flexible display devices for an improved user experience. The display surface of the one or more flexible displays may be divided in display areas, the display areas corresponding to a focus area and a peripheral FOV. Image processing may be differentiated according to display area.

公开(公告)号：US11722704B2

公开(公告)日：2023-08-08

申请号：US17415959

申请日：2019-12-17

Applicant: InterDigital VC Holdings, Inc.

Inventor： Pierre Andrivon ,  Marie-Jean Colaitis ,  David Touze

IPC: H04N19/98 ,  H04N19/85

CPC classification number: H04N19/98 ,  H04N19/85

Abstract: A method for decoding an image enables to preserve artistic intent at the final rendering stage by adjusting the image to luminance characteristics of the content and of the presentation display that will display the image. Values representative of luminance of both the image and the display device are obtained. Parameters of a display adaptation function are adjusted according to these values and the adjusted display adaptation function is used to decode the image. In at least one embodiment, the adjusted display adaptation function relates to a tone mapping function. Corresponding apparatus implementing the method is also described.

公开(公告)号：US11575944B2

公开(公告)日：2023-02-07

申请号：US17259884

申请日：2019-07-02

Applicant: InterDigital VC Holdings, Inc.

Inventor： Pierre Andrivon ,  Marie-Jean Colaitis ,  David Touze

IPC: H04N19/00 ,  H04N19/85 ,  H04N19/14 ,  H04N19/182 ,  H04N19/186

Abstract: The present embodiments obtain chroma components representative of the chroma components of an output image from color components representative of an input image, and if a value of a pixel in at least one of said chroma components exceeds a given value, modify the value of said pixel in at least one of said color components in such a way that the value of said pixel in said at least one of said chroma components is lower than or equals to said given value.

公开(公告)号：US11558629B2

公开(公告)日：2023-01-17

申请号：US14768929

申请日：2014-02-17

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Philippe Bordes ,  Franck Hiron ,  Pierre Andrivon ,  Patrick Lopez ,  Philippe Salmon

IPC: H04N19/44 ,  H04N21/438 ,  H04N21/235 ,  H04N19/573 ,  H04N19/30 ,  H04N19/176 ,  H04N19/50

Abstract: A method for decoding a picture block is disclosed. The decoding method comprises: reconstructing reference picture from another reference picture of a decoder picture buffer of a first layer of a multi-layered stream and from data decoded from a second layer of said multi-layered stream and storing said reference picture in a decoder picture buffer of said second layer, wherein said reference picture is indicated as not to be displayed; decoding a flag indicating that a subsequently decoded picture of the second layer is not using any inter-layer prediction; and reconstructing a picture block of said subsequently decoded picture at least from said reference picture.

公开(公告)号：US20220368954A1

公开(公告)日：2022-11-17

申请号：US17860752

申请日：2022-07-08

Applicant: InterDigital VC Holdings, Inc.

Inventor： Pierre Andrivon ,  Patrick Lopez ,  Marie-Jean Colaitis ,  David Touze

IPC: H04N19/98 ,  H04N19/70

Abstract: Different implementations are described, particularly implementations for processing a medium dynamic range video signal are presented. In a method for processing such a video signal a medium dynamic range video signal and associated metadata are received, wherein the metadata include data representative of a peak luminance value of the medium dynamic range video signal. In addition, data representative of a peak luminance value of a presentation display are received. It is determined whether the peak luminance value of the medium dynamic range video signal is greater or lower than the peak luminance value of the presentation display. A processor is configured based on the determination, wherein the processor has a first mode to reconstruct a high dynamic range video signal based on a received standard dynamic range video signal and associated metadata, and a second mode to optimize a received high dynamic range video signal for the rendering device. The medium dynamic range video signal is processed by the processor in the first mode if the peak luminance value of the medium dynamic range video signal is smaller than the peak luminance value of the presentation display and in the second mode if the peak luminance value of the medium dynamic range video signal is greater than the peak luminance value of the presentation display.

公开(公告)号：US11423522B2

公开(公告)日：2022-08-23

申请号：US16766387

申请日：2018-07-18

Applicant: InterDigital VC Holdings, Inc.

Inventor： Pierre Andrivon ,  Marie-Jean Colaitis ,  David Touze

IPC: G06T5/00 ,  G06F17/16 ,  G06T5/50

Abstract: The present embodiments relate to a method and apparatus comprising: —deriving chroma components (I) of a third image by correcting chroma components (II) of a second image according to a luma component of said second image and a reconstructed component obtained by applying a mapping function to said luma component (III) of said second image, said chroma components (II) of the second image being obtained by applying a conversion matrix to components (IV) of a first image; and —adapting coefficients of the conversion matrix which are relative to a chroma component of said third image independently of coefficients of the conversion matrix which are relative to another chroma component of said third image to ensure that there is no clipping on chroma components of the third image.

公开(公告)号：US11412275B2

公开(公告)日：2022-08-09

申请号：US17255468

申请日：2019-05-21

Applicant: InterDigital VC Holdings, Inc.

Inventor： Pierre Andrivon ,  Edouard Francois ,  Patrick Perez

IPC: H04N21/235 ,  H04N9/77 ,  H04N21/2343 ,  H04N21/236

Abstract: A method provides translation of metadata related to enhancement of a video signal according to a first high dynamic range video distribution type into metadata related to enhancement of a video signal according to a second high dynamic range video distribution type. Translation is done between a value of a first metadata set corresponding to a first type of high dynamic range video and a value of a second metadata set corresponding to a second type of high dynamic range video and uses an association that may be stored in a lookup table that is determined according to differences between a test image reconstructed using the metadata of first type and the same image reconstructed using the metadata of second type. A receiver apparatus and a transmitter apparatus comprising the translation method are also disclosed.

公开(公告)号：US11310532B2

公开(公告)日：2022-04-19

申请号：US15868111

申请日：2018-01-11

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Pierre Andrivon ,  David Touze ,  Nicolas Caramelli

IPC: H04N19/65 ,  H04N19/44 ,  H04N19/70

Abstract: A method or device for reconstructing image data representative of original image data from decoded image data and parameters obtained from a bitstream is described. The parameters having been processed from the original image data. The method includes checking if parameters are lost, corrupted or not aligned with the decoded image data whose graphics or overlay is added to, when at least one of the parameters is lost, corrupted or not aligned with the decoded image data whose graphics or overlay is added to; selecting a recovery mode according to an information data indicating how the parameters have been processed; and recovering the at least one lost, corrupted or not aligned parameter by applying the selected recovery mode, the reconstruction of image data then taking also into account the recovered parameters.

公开(公告)号：US11257195B2

公开(公告)日：2022-02-22

申请号：US16488581

申请日：2018-02-19

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Pierre Andrivon ,  Edouard Francois ,  Yannick Olivier ,  David Touze

IPC: G06T7/00 ,  G06T5/00 ,  H04N19/184 ,  H04N19/186 ,  H04N19/46 ,  H04N19/98 ,  G06T5/50 ,  G06T9/00

Abstract: The present principles relates to a method and device for reconstructing an HDR image by applying a reconstruction process on a SDR image whose the content is similar to the content of the HDR image but the dynamic range of the luminance values of said SDR image is lower than the dynamic range of the luminance values of said HDR image, said reconstruction process requiring parameters obtained from a bitstream. The method is characterized in that the method further comprises determining whether all the required parameters are available from the bitstream and recovering the lost or corrupted parameters from additional data, said reconstruction process further taking into account said recovered parameters.