公开(公告)号：US11044454B2

公开(公告)日：2021-06-22

申请号：US16169981

申请日：2018-10-24

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Athanasios Leontaris ,  Alexandras Tourapis ,  Peshala V. Pahalawatta ,  Kevin Stec ,  Walter Husak

IPC: H04N13/161 ,  H04N7/12 ,  H04N13/139 ,  H04N19/597 ,  H04N19/61 ,  H04N19/117 ,  H04N19/187 ,  H04N19/44 ,  H04N19/33 ,  H04N19/10 ,  H04N19/34

Abstract: Multi-layered frame-compatible video delivery is described. Multi-layered encoding and decoding methods, comprising a base layer and at least one enhancement layer with reference processing, are provided. In addition, multi-layered encoding and decoding methods with inter-layer dependencies are described. Encoding and decoding methods that are capable of frame-compatible 3D video delivery are also described.

公开(公告)号：US10798412B2

公开(公告)日：2020-10-06

申请号：US16011557

申请日：2018-06-18

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Alexandros Tourapis ,  Peshala V. Pahalawatta ,  Athanasios Leontaris ,  Kevin J. Stec ,  Walter J. Husak

IPC: H04N19/59 ,  H04N19/597 ,  H04N19/117 ,  H04N19/187 ,  H04N19/33 ,  H04N19/85 ,  H04N19/105 ,  H04N19/147 ,  H04N19/172 ,  H04N19/61 ,  H04N19/136 ,  H04N19/17 ,  H04N19/82 ,  H04N19/573

Abstract: Encoding and decoding architectures for 3D video delivery are described, such as 2D compatible 3D video delivery and frame compatible 3D video delivery. The architectures include pre-processing stages to pre-process the output of a base layer video encoder and/or decoder and input the pre-processed output into an enhancement layer video encoder and/or decoder of one or more enhancement layers. Multiplexing methods of how to combine the base and enhancement layer videos are also described.

公开(公告)号：US20190364260A1

公开(公告)日：2019-11-28

申请号：US16534716

申请日：2019-08-07

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Walter J. Husak ,  David Ruhoff ,  Alexandros Tourapis ,  Athanasios Leontaris

IPC: H04N13/161 ,  H04N19/00 ,  H04N19/59 ,  H04N19/60 ,  H04N13/194 ,  H04N19/597 ,  H04N13/15 ,  H04N13/139 ,  H04N19/61

Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.

公开(公告)号：US20190342558A1

公开(公告)日：2019-11-07

申请号：US16517382

申请日：2019-07-19

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Alexandros Tourapis ,  Athanasios Leontaris

IPC: H04N19/139 ,  H04N19/152 ,  H04N19/597 ,  H04N19/159 ,  H04N19/105 ,  H04N19/577 ,  H04N19/182 ,  H04N19/513 ,  H04N19/573 ,  H04N19/583 ,  H04N19/103 ,  H04N19/61 ,  H04N19/30 ,  H04N19/46 ,  H04N19/176

Abstract: Overlapped block disparity estimation and compensation is described. Compensating for images with overlapped block disparity compensation (OBDC) involves determining if OBDC is enabled in a video bit stream, and determining if OBDC is enabled for one or more macroblocks that neighbor a first macroblock within the video bit stream. The neighboring macroblocks may be transform coded. If OBDC is enabled in the video bit stream and for the one or more neighboring macroblocks, predictions may be made for a region of the first macroblock that has an edge adjacent with the neighboring macroblocks. OBDC can be causally applied. Disparity compensation parameters or modes may be shared amongst views or layers. A variety of predictions may be used with causally-applied OBDC.

公开(公告)号：US10419739B2

公开(公告)日：2019-09-17

申请号：US16285007

申请日：2019-02-25

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Walter J. Husak ,  David Ruhoff ,  Alexandros Tourapis ,  Athanasios Leontaris

IPC: H04N13/00 ,  H04N13/161 ,  H04N13/139 ,  H04N13/15 ,  H04N13/194 ,  H04N19/597 ,  H04N19/61 ,  H04N19/60 ,  H04N19/59 ,  H04N19/00

Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.

公开(公告)号：US10194172B2

公开(公告)日：2019-01-29

申请号：US15678982

申请日：2017-08-16

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Alexandros Tourapis ,  Athanasios Leontaris ,  Peshala V. Pahalawatta ,  Kevin J. Stec

IPC: H04N19/17 ,  H04N19/40 ,  H04N19/44 ,  H04N19/70 ,  H04N19/80 ,  H04N13/161 ,  H04N13/172 ,  H04N13/178 ,  H04N13/218 ,  H04N19/172 ,  H04N19/423 ,  H04N19/587 ,  H04N19/597 ,  H04N19/895 ,  H04N13/10 ,  H04N19/85 ,  H04N19/86 ,  H04N19/89 ,  H04N19/154

Abstract: An encoding device evaluates a plurality of processing and/or post-processing algorithms and/or methods to be applied to a video stream, and signals a selected method, algorithm, class or category of methods/algorithms either in an encoded bitstream or as side information related to the encoded bitstream. A decoding device or post-processor utilizes the signaled algorithm or selects an algorithm/method based on the signaled method or algorithm. The selection is based, for example, on availability of the algorithm/method at the decoder/post-processor and/or cost of implementation. The video stream may comprise, for example, downsampled multiplexed stereoscopic images and the selected algorithm may include any of upconversion and/or error correction techniques that contribute to a restoration of the downsampled images.

公开(公告)号：US09912931B1

公开(公告)日：2018-03-06

申请号：US15808675

申请日：2017-11-09

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Walter J. Husak ,  David Ruhoff ,  Alexandros Tourapis ,  Athanasios Leontaris

IPC: H04N13/00 ,  H04N19/61 ,  H04N19/59 ,  H04N19/60 ,  H04N19/00 ,  H04N19/597

CPC classification number: H04N13/161 ,  H04N13/139 ,  H04N13/15 ,  H04N13/194 ,  H04N19/00 ,  H04N19/59 ,  H04N19/597 ,  H04N19/60 ,  H04N19/61

Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.

公开(公告)号：US09843807B2

公开(公告)日：2017-12-12

申请号：US15496795

申请日：2017-04-25

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Alexandros Tourapis ,  Athanasios Leontaris

IPC: H04N19/577 ,  H04N19/139 ,  H04N19/61 ,  H04N19/30 ,  H04N19/152 ,  H04N19/159 ,  H04N19/105 ,  H04N19/573 ,  H04N19/103 ,  H04N19/176 ,  H04N19/184

CPC classification number: H04N19/139 ,  H04N19/103 ,  H04N19/105 ,  H04N19/152 ,  H04N19/159 ,  H04N19/176 ,  H04N19/182 ,  H04N19/184 ,  H04N19/30 ,  H04N19/46 ,  H04N19/521 ,  H04N19/573 ,  H04N19/577 ,  H04N19/583 ,  H04N19/597 ,  H04N19/61

Abstract: Overlapped block disparity estimation and compensation is described. Compensating for images with overlapped block disparity compensation (OBDC) involves determining if OBDC is enabled in a video bit stream, and determining if OBDC is enabled for one or more macroblocks that neighbor a first macroblock within the video bit stream. The neighboring macroblocks may be transform coded. If OBDC is enabled in the video bit stream and for the one or more neighboring macroblocks, predictions may be made for a region of the first macroblock that has an edge adjacent with the neighboring macroblocks. OBDC can be causally applied. Disparity compensation parameters or modes may be shared amongst views or layers. A variety of predictions may be used with causally-applied OBDC.

公开(公告)号：US20170180735A1

公开(公告)日：2017-06-22

申请号：US15451689

申请日：2017-03-07

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Athanasios Leontaris ,  Alexandros Tourapis

IPC: H04N19/146 ,  H04N19/154

CPC classification number: H04N19/146 ,  H04N19/102 ,  H04N19/115 ,  H04N19/14 ,  H04N19/154 ,  H04N19/177 ,  H04N19/192 ,  H04N19/436

Abstract: Rate control techniques are provided for encoding an input video sequence into a compressed coded bitstream with multiple coding passes. The final coding pass may comprise final splices with non-overlapping frames that do not extend into neighboring final splices. A final splice in the final coding pass may correspond to at least one non-final splice in a non-final coding pass. A non-final splice may have overlapping frames that extend into neighboring final splices in the final coding pass. The overlapping frames in the non-final splice may be used to derive complexity information about the neighboring final splices. The complexity information about the neighboring final splices, as derived from the overlapping frames, may be used to allocate or improve rate control related budgets in encoding the final splice into the compressed coded bitstream in the final coding pass.

公开(公告)号：US09667964B2

公开(公告)日：2017-05-30

申请号：US14342523

申请日：2012-09-27

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Alexandros Tourapis ,  Athanasios Leontaris

IPC: H04N19/139 ,  H04N19/51 ,  H04N19/80 ,  H04N19/159 ,  H04N19/172 ,  H04N19/61 ,  H04N19/132 ,  H04N19/137 ,  H04N19/192 ,  H04N19/436 ,  H04N19/53 ,  H04N19/557 ,  H04N19/587 ,  H04N19/86 ,  H04N19/87

CPC classification number: H04N19/80 ,  H04N19/132 ,  H04N19/137 ,  H04N19/139 ,  H04N19/159 ,  H04N19/172 ,  H04N19/192 ,  H04N19/436 ,  H04N19/51 ,  H04N19/53 ,  H04N19/557 ,  H04N19/587 ,  H04N19/61 ,  H04N19/86 ,  H04N19/87

Abstract: A method and system for reduced complexity motion compensated temporal processing for pre-analysis purposes. The processing complexity is reduced by reducing the number of pictures processed for analysis, reducing the number of references used for analysis, and/or spatially subsampling input pictures.