公开(公告)号：US11677982B2

公开(公告)日：2023-06-13

申请号：US17943808

申请日：2022-09-13

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

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

IPC: H04N19/597 ,  H04N19/80 ,  H04N19/17 ,  H04N13/161 ,  H04N13/172 ,  H04N13/178 ,  H04N13/218 ,  H04N19/154 ,  H04N19/85 ,  H04N19/44 ,  H04N19/895 ,  H04N19/70 ,  H04N19/86 ,  H04N7/01 ,  H04N21/434 ,  H04N19/176 ,  H04N19/587 ,  H04N19/172 ,  H04N19/423 ,  H04N13/10 ,  H04N19/89 ,  H04N19/40

CPC classification number: H04N19/597 ,  H04N7/0102 ,  H04N7/0117 ,  H04N7/0135 ,  H04N13/161 ,  H04N13/172 ,  H04N13/178 ,  H04N13/218 ,  H04N19/154 ,  H04N19/17 ,  H04N19/172 ,  H04N19/176 ,  H04N19/423 ,  H04N19/44 ,  H04N19/587 ,  H04N19/70 ,  H04N19/80 ,  H04N19/85 ,  H04N19/865 ,  H04N19/895 ,  H04N21/4347 ,  H04N13/10 ,  H04N19/40 ,  H04N19/86 ,  H04N19/89

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：US20200314405A1

公开(公告)日：2020-10-01

申请号：US16903189

申请日：2020-06-16

Applicant: Dolby Laboratories Licensing Corporation

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

IPC: 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：US20200186806A1

公开(公告)日：2020-06-11

申请号：US16790337

申请日：2020-02-13

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Alexandros Tourapis ,  Athanasios Leontaris

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

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：US10574994B2

公开(公告)日：2020-02-25

申请号：US16298051

申请日：2019-03-11

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Alexandros Tourapis ,  Athanasios Leontaris

IPC: H04N19/139 ,  H04N19/597 ,  H04N19/176 ,  H04N19/46 ,  H04N19/30 ,  H04N19/61 ,  H04N19/103 ,  H04N19/573 ,  H04N19/513 ,  H04N19/583 ,  H04N19/577 ,  H04N19/182 ,  H04N19/105 ,  H04N19/152 ,  H04N19/159 ,  H04N19/184

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：US20190373288A1

公开(公告)日：2019-12-05

申请号：US16431227

申请日：2019-06-04

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

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

IPC: H04N19/597 ,  H04N19/176 ,  H04N19/33 ,  H04N13/161 ,  H04N13/194 ,  H04N21/2365 ,  H04N21/2383 ,  H04N21/438 ,  H04N19/46 ,  H04N19/61 ,  H04N19/60 ,  H04N19/112 ,  H04N19/16 ,  H04N19/587 ,  H04N19/85 ,  H04N21/434

Abstract: Sampled data is packaged in checkerboard format for encoding and decoding. The sampled data may be quincunx sampled multi-image video data (e.g., 3D video or a multi-program stream), and the data may also be divided into sub-images of each image which are then multiplexed, or interleaved, in frames of a video stream to be encoded and then decoded using a standardized video encoder. A system for viewing may utilize a standard video decoder and a formatting device that de-interleaves the decoded sub-images of each frame reformats the images for a display device. A 3D video may be encoded using a most advantageous interleaving format such that a preferred quality and compression ratio is reached. In one embodiment, the invention includes a display device that accepts data in multiple formats.

公开(公告)号：US20190208213A1

公开(公告)日：2019-07-04

申请号：US16298051

申请日：2019-03-11

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：US10326996B2

公开(公告)日：2019-06-18

申请号：US15934906

申请日：2018-03-23

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Athanasios Leontaris ,  Alexandros Tourapis

IPC: H04N19/146 ,  H04N19/154 ,  H04N19/102 ,  H04N19/115 ,  H04N19/14 ,  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：US10038891B1

公开(公告)日：2018-07-31

申请号：US15969349

申请日：2018-05-02

Applicant: Dolby Laboratories Licensing Corporation

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

IPC: H04N13/00 ,  H04N13/161 ,  H04N19/61 ,  H04N19/59 ,  H04N19/60 ,  H04N13/139 ,  H04N19/00 ,  H04N13/15 ,  H04N13/194 ,  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：US20180146185A1

公开(公告)日：2018-05-24

申请号：US15876975

申请日：2018-01-22

Applicant: Dolby Laboratories Licensing Corporation

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

IPC: H04N13/00 ,  H04N19/00 ,  H04N19/59 ,  H04N19/61 ,  H04N19/60 ,  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：US09961357B2

公开(公告)日：2018-05-01

申请号：US14668851

申请日：2015-03-25

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

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

IPC: H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/44 ,  H04N19/597 ,  H04N19/33 ,  H04N13/00 ,  H04N19/172 ,  H04N19/13 ,  H04N19/61 ,  H04N19/136 ,  H04N19/82 ,  H04N19/105 ,  H04N19/86 ,  H04N19/91

CPC classification number: H04N19/45 ,  H04N13/128 ,  H04N13/139 ,  H04N13/161 ,  H04N19/105 ,  H04N19/13 ,  H04N19/136 ,  H04N19/172 ,  H04N19/33 ,  H04N19/597 ,  H04N19/61 ,  H04N19/82 ,  H04N19/86 ,  H04N19/91

Abstract: A video base layer can contain information pertaining to frame-compatible interlace representations of multiple data categories while video enhancement layers can contain interlace or progressive representations and/or frame-compatible representations of these data categories. Video data are encoded and decoded using layered approaches.