公开(公告)号：US20190191174A1

公开(公告)日：2019-06-20

申请号：US16284886

申请日：2019-02-25

Applicant: QUALCOMM Incorporated

Inventor： Adarsh Krishnan Ramasubramonian ,  Dmytro Rusanovskyy ,  Joel Sole Rojals ,  Sungwon Lee ,  Done Bugdayci Sansli ,  Marta Karczewicz

IPC: H04N19/44 ,  H04N19/184 ,  H04N19/46 ,  H04N19/80 ,  H04N19/36 ,  H04N19/132 ,  H04N19/85

CPC classification number: H04N19/44 ,  H04N19/117 ,  H04N19/132 ,  H04N19/154 ,  H04N19/184 ,  H04N19/187 ,  H04N19/36 ,  H04N19/46 ,  H04N19/80 ,  H04N19/85

Abstract: Processing high dynamic range and or wide color gamut video data using a fixed-point implementation. A method of processing video data may include receiving one or more supplemental enhancement information (SEI) messages that contain information specifying how to determine parameters for performing an inverse dynamic range adjustment process, receiving decoded video data, and performing the inverse dynamic range adjustment process on the decoded video data using fixed-point computing in accordance with the information in the one or more SEI messages.

公开(公告)号：US20190149819A1

公开(公告)日：2019-05-16

申请号：US15812247

申请日：2017-11-14

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： Chris Phillips ,  Kuheli Haldar ,  Anthony Richard Jones

IPC: H04N19/115 ,  H04N19/30 ,  H04L29/06

CPC classification number: H04N19/115 ,  H04L65/607 ,  H04L65/608 ,  H04N19/30 ,  H04N19/46 ,  H04N19/70 ,  H04N19/80 ,  H04N19/86 ,  H04N21/23439 ,  H04N21/6125 ,  H04N21/8456

Abstract: A system and method for mitigating motion artifacts in a media streaming network, wherein a scheme for facilitating adaptive post-decode (PD) filtering at a client device is provided. Extraction of still area grid information is effectuated at a source media processing node. Extracted still area grid information is multiplexed with audio/video components for appropriately signaling to downstream devices based on media containerization deployed for distribution. A client device is operative to select a suitable PD filter based on a plurality of selection criteria and apply the selected PD filter to the still area grids of the decoded image frames.

公开(公告)号：US20190075317A1

公开(公告)日：2019-03-07

申请号：US16177860

申请日：2018-11-01

Applicant: Microsoft Technology Licensing, LLC

Inventor： Pohsiang Hsu ,  Chih-Lung Lin ,  Ming-Chieh Lee ,  Thomas W. Holcomb ,  Sridhar Srinivasan

IPC: H04N19/523 ,  G06T7/00 ,  H04N19/105 ,  H04N19/895 ,  H04N19/86 ,  H04N19/82 ,  H04N19/80 ,  H04N19/70 ,  H04N19/63 ,  H04N19/625 ,  H04N19/61 ,  H04N19/593 ,  H04N19/59 ,  H04N19/57 ,  H04N19/547 ,  H04N19/533 ,  H04N19/527 ,  H04N19/52 ,  H04N19/513 ,  H04N19/50 ,  H04N19/46 ,  G06T3/40 ,  H04N19/18 ,  H04N19/176 ,  H04N19/172 ,  H04N19/154 ,  H04N19/15 ,  H04N19/147 ,  H04N19/146 ,  H04N19/137 ,  H04N19/136 ,  H04N19/132 ,  H04N19/129 ,  H04N19/124 ,  H04N19/122 ,  H04N19/119 ,  H04N19/117 ,  H04N19/115 ,  H04N19/182

CPC classification number: H04N19/523 ,  G06T3/40 ,  G06T7/0012 ,  H04N19/105 ,  H04N19/115 ,  H04N19/117 ,  H04N19/119 ,  H04N19/122 ,  H04N19/124 ,  H04N19/129 ,  H04N19/132 ,  H04N19/136 ,  H04N19/137 ,  H04N19/146 ,  H04N19/147 ,  H04N19/15 ,  H04N19/154 ,  H04N19/172 ,  H04N19/176 ,  H04N19/18 ,  H04N19/182 ,  H04N19/46 ,  H04N19/50 ,  H04N19/513 ,  H04N19/52 ,  H04N19/527 ,  H04N19/533 ,  H04N19/547 ,  H04N19/57 ,  H04N19/59 ,  H04N19/593 ,  H04N19/61 ,  H04N19/625 ,  H04N19/63 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/86 ,  H04N19/895

Abstract: Techniques and tools for video coding/decoding with motion resolution switching and sub-block transform coding/decoding are described. For example, a video encoder adaptively switches the resolution of motion estimation and compensation between quarter-pixel and half-pixel resolutions; a corresponding video decoder adaptively switches the resolution of motion compensation between quarter-pixel and half-pixel resolutions. For sub-block transform sizes, for example, a video encoder adaptively switches between 8×8, 8×4, and 4×8 DCTs when encoding 8×8 prediction residual blocks; a corresponding video decoder switches between 8×8, 8×4, and 4×8 inverse DCTs during decoding.

公开(公告)号：US20190052913A1

公开(公告)日：2019-02-14

申请号：US15672689

申请日：2017-08-09

Applicant: Vital Images, Inc.

Inventor： William D. Hachfeld

IPC: H04N19/93 ,  H04N19/172 ,  H04N19/91

CPC classification number: H04N19/93 ,  G16H30/20 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/59 ,  H04N19/593 ,  H04N19/80 ,  H04N19/90 ,  H04N19/91

Abstract: Techniques and configurations for compression of image data in a progressive, lossless manner are disclosed. In an example, three-dimensional medical images may be compressed and decompressed with high-speed operations, through a compression technique performed on a cube (chunk) of voxels that includes generating a subsampled or filtered cube of voxels, and generating and optimizing a delta data set between the cube of voxels and the subsampled cube of voxels. This optimized delta data set is operable with a decompression technique to losslessly recreate the cube of voxels. Further, the compression technique may be progressively performed with multiple iterations, to allow multiple lower resolution versions of the images prior to loading or receiving the entire compressed data that is reconstructable in a lossless form. Use of this technique may result in dramatically reduced time to first image when visualizing 3D images and performing image data transfers.

公开(公告)号：US20180288442A1

公开(公告)日：2018-10-04

申请号：US15996877

申请日：2018-06-04

Applicant: LG ELECTRONICS INC.

Inventor： Seungwook PARK ,  Jungsun KIM ,  Yongjoon JEON ,  Joonyoung PARK ,  Byeongmoon JEON ,  Jaehyun LIM

IPC: H04N19/80 ,  H04N19/44 ,  H04N19/13 ,  H04N19/82 ,  H04N19/70 ,  H04N19/61 ,  H04N19/50 ,  H04N19/117 ,  H04N19/186 ,  H04N19/132 ,  H04N19/126 ,  H04N19/98

CPC classification number: H04N19/80 ,  H04N19/117 ,  H04N19/126 ,  H04N19/13 ,  H04N19/132 ,  H04N19/186 ,  H04N19/44 ,  H04N19/50 ,  H04N19/61 ,  H04N19/70 ,  H04N19/82 ,  H04N19/98

Abstract: The present invention relates to a method for encoding and decoding image information and to an apparatus using same, and the method for encoding the image information, according to the present invention, comprises the steps of: generating a recovery block; applying a deblocking filter to the recovery block; applying a sample adaptive offset (SAO) to the recovery block to which the deblocking filter is applied; and transmitting the image information including information on the SAO which is applied, wherein in the step of transmitting, information for specifying bands that cover a scope of a pixel value, to which a band off set is applied, is transmitted when the band offset is applied during the step of applying the SAO.

公开(公告)号：US20180288441A1

公开(公告)日：2018-10-04

申请号：US15937687

申请日：2018-03-27

Applicant: QUALCOMM Incorporated

Inventor： Li Zhang ,  Wei-Jung Chien ,  Marta Karczewicz

IPC: H04N19/80 ,  H04N19/176 ,  H04N19/186 ,  H04N19/44 ,  H04N19/107 ,  H04N19/159

CPC classification number: H04N19/80 ,  H04N19/107 ,  H04N19/117 ,  H04N19/14 ,  H04N19/159 ,  H04N19/167 ,  H04N19/176 ,  H04N19/186 ,  H04N19/44 ,  H04N19/82

Abstract: A video decoder can be configured to determine first filter information for a first luma block unit of a current block; filter the first luma block unit based on the first filter information; determine second filter information for a second luma block unit of the current block; filter the second luma block unit based on the second filter information; and derive third filter information for a chroma block unit of the current block based on filter information determined for multiple luma block units, wherein the filter information determined for the multiple luma block units includes the first filter information for the first luma block unit and the second filter information for the second luma block unit; filter the chroma block unit based on the third filter information; and output a decoded version of the current block.

公开(公告)号：US20180249187A1

公开(公告)日：2018-08-30

申请号：US15969104

申请日：2018-05-02

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jung-hye MIN ,  Tammy LEE ,  Il-koo KIM

IPC: H04N19/86 ,  H04N19/139 ,  H04N19/593 ,  H04N19/122 ,  H04N19/30 ,  H04N19/52 ,  H04N19/82 ,  H04N19/157 ,  H04N19/117 ,  H04N19/96 ,  H04N19/61 ,  H04N19/119 ,  H04N19/50 ,  H04N19/80 ,  H04N19/182 ,  H04N19/159 ,  H04N19/105

CPC classification number: H04N19/86 ,  H04N19/105 ,  H04N19/117 ,  H04N19/119 ,  H04N19/122 ,  H04N19/139 ,  H04N19/157 ,  H04N19/159 ,  H04N19/182 ,  H04N19/395 ,  H04N19/50 ,  H04N19/52 ,  H04N19/593 ,  H04N19/61 ,  H04N19/80 ,  H04N19/82 ,  H04N19/96

Abstract: A method and apparatus for encoding video by using deblocking filtering, and a method and apparatus for decoding video by using deblocking filtering are provided. The method of encoding video includes: splitting a picture into a maximum coding unit; determining coding units of coded depths and encoding modes for the coding units of the maximum coding unit by prediction encoding the coding units of the maximum coding unit based on at least one prediction unit and transforming the coding units based on at least one transformation unit, wherein the maximum coding unit is hierarchically split into the coding units as a depth deepens, and the coded depths are depths where the maximum coding unit is encoded in the coding units; and performing deblocking filtering on video data being inversely transformed into a spatial domain in the coding units, in consideration of the encoding modes.

公开(公告)号：US20180249159A1

公开(公告)日：2018-08-30

申请号：US15966328

申请日：2018-04-30

Applicant: Sun Patent Trust

Inventor： Matthias NARROSCHKE ,  Hisao SASAI

IPC: H04N19/117 ,  H04N19/68 ,  H04N19/42 ,  H04N19/44 ,  H04N19/615 ,  H04N19/635 ,  H04N19/86 ,  H04N19/147 ,  H04N19/80 ,  H04N19/48 ,  H04N19/136 ,  H04N19/61 ,  H04N19/46 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/136 ,  H04N19/147 ,  H04N19/439 ,  H04N19/44 ,  H04N19/46 ,  H04N19/48 ,  H04N19/61 ,  H04N19/615 ,  H04N19/635 ,  H04N19/68 ,  H04N19/80 ,  H04N19/82 ,  H04N19/86

Abstract: The present invention relates to a method for encoding and decoding an image signal and to corresponding apparatuses therefor. In particular, during the encoding and/or decoding of an image signal filtering with at least two filters is performed. The sequence of the filter application and possibly the filters are selected and the filtering is applied in the selected filtering order and with the selected filters. The determination of the sequence of applying the filters may be performed either separately in the same way at the encoder and at the decoder, or, it may be determined at the encoder and signaled to the decoder.

公开(公告)号：US20180234695A1

公开(公告)日：2018-08-16

申请号：US15950422

申请日：2018-04-11

Applicant: Sun Patent Trust

Inventor： Steffen WITTMANN ,  Virginie DRUGEON ,  Matthias NARROSCHKE ,  Thomas WEDI

IPC: H04N19/50 ,  H04N19/82 ,  H04N19/176 ,  H04N19/117

CPC classification number: H04N19/50 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/593 ,  H04N19/80 ,  H04N19/82

Abstract: The present invention relates to intra prediction which may be performed during encoding and/or decoding of an image signal. In particular, the present invention relates to intra prediction of a current block, during which filtering is applied to the prediction signal and/or to signal used for the prediction. The filtering is applied in accordance with a decision based on characteristics of image signal included in block(s) spatially adjacent to the current block.

公开(公告)号：US20180227598A1

公开(公告)日：2018-08-09

申请号：US15948832

申请日：2018-04-09

Applicant: Texas Instruments Incorporated

Inventor： Mangesh Devidas Sadafale

IPC: H04N19/86 ,  H04N19/117 ,  H04N19/80 ,  H04N19/159 ,  H04N19/176 ,  H04N19/14

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/14 ,  H04N19/159 ,  H04N19/176 ,  H04N19/80

Abstract: Several methods and systems for reducing blocking artifacts are disclosed. In an embodiment, the method includes receiving a pair of adjacent blocks having an edge being positioned between the adjacent blocks. The pair of adjacent blocks is associated with one or more coding blocks. The one or more coding blocks comprise one or more coding information associated with the coding of the pair of adjacent blocks. The method also includes conducting a determination of whether the pair of adjacent blocks is coded in a skip-mode based on the one or more coding information. The edge is filtered based on the determination. Filtering the edge comprises disabling a de-blocking filtering of the edge based on a determination that the pair of adjacent blocks is coded in the skip-mode; and enabling the de-blocking filtering of the edge based on determination that the pair of adjacent blocks is not associated with the skip-mode.