公开(公告)号：US20240357138A1

公开(公告)日：2024-10-24

申请号：US18665022

申请日：2024-05-15

申请人： Intel Corporation

发明人： Ximin Zhang ,  Sang-Hee Lee ,  Keith Rowe

IPC分类号： H04N19/196 ,  H04N19/124 ,  H04N19/14 ,  H04N19/176 ,  H04N19/177

CPC分类号： H04N19/196 ,  H04N19/124 ,  H04N19/14 ,  H04N19/176 ,  H04N19/177

摘要： An example apparatus for encoding video frames includes a mask selector to select a subset of visual masks according to an actual target compression ratio and GOP configuration and a complexity estimator to estimate a picture level spatial/temporal complexity for a current frame. The example apparatus further includes a GOP adaptive visual mask selector to specify a visual mask from the subset of the visual masks corresponding to the estimated spatial and temporal complexity value a good enough picture QP deriver to derive a good enough picture QP value using the visual mask. The example apparatus also includes an adjustor to adjust the good enough picture QP value based on block level human visual system sensitivity and statistics of already encoded frames to obtain a final human visual system QP map.

公开(公告)号：US20240348808A1

公开(公告)日：2024-10-17

申请号：US18755515

申请日：2024-06-26

申请人： Snap Inc.

发明人： Liu Liu ,  Chao Pang ,  Rong Yan

IPC分类号： H04N19/40 ,  H04L65/70 ,  H04L65/75 ,  H04N5/77 ,  H04N5/926 ,  H04N9/804 ,  H04N19/137 ,  H04N19/14 ,  H04N19/146 ,  H04N19/162 ,  H04N19/179 ,  H04N21/2662 ,  H04N21/4223 ,  H04N21/433 ,  H04N21/4402 ,  H04W88/18

CPC分类号： H04N19/40 ,  H04L65/70 ,  H04L65/762 ,  H04N5/77 ,  H04N5/9261 ,  H04N9/8042 ,  H04N19/137 ,  H04N19/14 ,  H04N19/146 ,  H04N19/162 ,  H04N19/179 ,  H04N21/2662 ,  H04N21/4223 ,  H04N21/4334 ,  H04N21/4402 ,  H04W88/181

摘要： Among other things, embodiments of the present disclosure improve the functionality of electronic messaging and imaging software and systems by automating the client-side transcoding of video data based on content. For example, an appropriate transcoding configuration can be selected for video data having complex motion or textures. Accordingly, video quality can be improve when complex motions or textures are present.

公开(公告)号：US12120347B2

公开(公告)日：2024-10-15

申请号：US17906991

申请日：2021-03-15

申请人： Nokia Technologies Oy

发明人： Sebastian Schwarz ,  Ioan Tabus ,  Emre Can Kaya

IPC分类号： H04N19/597 ,  H04N19/14

CPC分类号： H04N19/597 ,  H04N19/14

摘要： Encoding a two depth images of points of a bounded volume (730); determining a first section across a second axis between the depth images to generate a feasible occupancy image and a list of pixels with unknown occupancy status (740); encoding a binary sequence according to a true occupancy image, wherein the binary sequence transmits the occupancy status for the list of pixels with unknown occupancy status (750); detecting anchoring points from the binary sequence, and encoding missing elements between the anchoring points (760); determining a first section across a third axis from the bounding volume reconstructed so far and create a list of pixels with unknown status (780); encoding a binary sequence according to the true occupancy image the sequence conveying the occupancy status of the list of pixels with unknown status (785); and detecting the anchor points from the sequence and corresponding list of pixels and encoding missing elements between the anchoring points (795).

公开(公告)号：US12108058B2

公开(公告)日：2024-10-01

申请号：US17805115

申请日：2022-06-02

申请人： ALIBABA GROUP HOLDING LIMITED

发明人： Ru-Ling Liao ,  Jie Chen ,  Yan Ye ,  Jiancong Luo

IPC分类号： H04N19/14 ,  H04N19/103 ,  H04N19/172 ,  H04N19/186

CPC分类号： H04N19/186 ,  H04N19/103 ,  H04N19/14 ,  H04N19/172

摘要： The present disclosure provides methods and apparatuses for processing chroma sampled pictures. An exemplary video processing method includes: determining whether a chroma component is included in a sequence of frames; and in response to a determination that the chroma component is included in the sequence, activating a sub-process for processing the sequence, wherein the sub-process comprises one or more of joint coding for chroma residues (JCCR), block differential pulse coded modulation (BDPCM), palette mode, or adaptive color transform (ACT).

公开(公告)号：US20240323391A1

公开(公告)日：2024-09-26

申请号：US18658610

申请日：2024-05-08

申请人： HUAWEI TECHNOLOGIES CO., LTD.

发明人： Semih ESENLIK ,  Biao WANG ,  Anand Meher KOTRA ,  Elena Alexandrovna ALSHINA

IPC分类号： H04N19/14 ,  H04N19/174 ,  H04N19/423

CPC分类号： H04N19/14 ,  H04N19/174 ,  H04N19/423

摘要： A method of coding performed by a decoding device and a decoder are disclosed. The method comprises: obtaining a bitstream for a current picture; obtaining a quantity of tiles in a tile row of the current picture; obtaining a value of an address of a current slice comprised in the current picture; obtaining a value of a horizontal coordinate according to the value of the address of the current slice; and when a difference value between the quantity of tiles in the tile row of the current picture and the value of the horizontal coordinate is not equal to a first threshold, parsing an indication value for a slice width from the bitstream for the current picture.

公开(公告)号：US20240291995A1

公开(公告)日：2024-08-29

申请号：US18652316

申请日：2024-05-01

申请人： TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED

发明人： Zhicheng LI

IPC分类号： H04N19/137 ,  H04N19/105 ,  H04N19/124 ,  H04N19/14 ,  H04N19/172 ,  H04N19/51 ,  H04N19/91

CPC分类号： H04N19/137 ,  H04N19/105 ,  H04N19/124 ,  H04N19/14 ,  H04N19/172 ,  H04N19/51 ,  H04N19/91

摘要： A video processing method includes: obtaining N video frame sequences of an input video, each video frame sequence comprising at least one video frame image, and N being an integer greater than 1; obtaining an ith video frame sequence and an adjacent (i−1)th video frame sequence from the N video frame sequences, i being an integer greater than 1; obtaining a first video frame image from the ith video frame sequence, and obtaining a second video frame image from the (i−1)th video frame sequence, the first video frame image corresponding to a first image attribute, and the second video frame image corresponding to a second image attribute; obtaining first computing power corresponding to encoding of the (i−1)th video frame sequence; and determining an encoding parameter of the ith video frame sequence according to at least one of the first computing power, the first image attribute, and the second image attribute.

公开(公告)号：US12075098B2

公开(公告)日：2024-08-27

申请号：US18596494

申请日：2024-03-05

申请人： Dolby Laboratories Licensing Corporation

发明人： Tao Chen ,  Peng Yin ,  Taoran Lu ,  Walter J. Husak

IPC分类号： H04N19/70 ,  H04N19/14 ,  H04N19/186 ,  H04N19/20

CPC分类号： H04N19/70 ,  H04N19/14 ,  H04N19/186 ,  H04N19/20

摘要： Methods are described to communicate source color volume information in a coded bitstream using SEI messaging. Such data include at least the minimum, maximum, and average luminance values in the source data plus optional data that may include the color volume x and y chromaticity coordinates for the input color primaries (e.g., red, green, and blue) of the source data, and the color x and y chromaticity coordinates for the color primaries corresponding to the minimum, average, and maximum luminance values in the source data. Messaging data signaling an active region in each picture may also be included.

公开(公告)号：US12075082B2

公开(公告)日：2024-08-27

申请号：US18057344

申请日：2022-11-21

申请人： GE VIDEO COMPRESSION, LLC

发明人： Philipp Merkle ,  Christian Bartnik ,  Haricharan Lakshman ,  Detlev Marpe ,  Karsten Mueller ,  Thomas Wiegand ,  Gerhard Tech

IPC分类号： H04N19/51 ,  H04N19/105 ,  H04N19/119 ,  H04N19/14 ,  H04N19/157 ,  H04N19/176 ,  H04N19/196 ,  H04N19/46 ,  H04N19/52 ,  H04N19/593 ,  H04N19/597 ,  H04N19/70 ,  H04N19/82 ,  H04N19/96

CPC分类号： H04N19/51 ,  H04N19/105 ,  H04N19/119 ,  H04N19/157 ,  H04N19/176 ,  H04N19/196 ,  H04N19/46 ,  H04N19/52 ,  H04N19/593 ,  H04N19/597 ,  H04N19/70 ,  H04N19/82 ,  H04N19/96 ,  H04N19/14

摘要： In accordance with a first aspect, the intra prediction direction of a neighboring, intra-predicted block is used in order to predict the extension direction of the wedgelet separation line of a current block, thereby reducing the side information rate necessitated in order to convey the partitioning information. In accordance with a second aspect, the idea is that previously reconstructed samples, i.e. reconstructed values of blocks preceding the current block in accordance with the coding/decoding order allow for at least a prediction of a correct placement of a starting point of the wedgelet separation line, namely by placing the starting point of the wedgelet separation line at a position of a maximum change between consecutive ones of a sequence of reconstructed values of samples of a line of samples extending adjacent to the current block along a circumference thereof. Both aspects may be used individually or in combination.

公开(公告)号：US12069271B2

公开(公告)日：2024-08-20

申请号：US18332244

申请日：2023-06-09

申请人： ALIBABA GROUP HOLDING LIMITED

发明人： Yan Ye ,  Jie Chen ,  Ru-Ling Liao

IPC分类号： H04N19/00 ,  H04N19/132 ,  H04N19/14 ,  H04N19/176 ,  H04N19/186

CPC分类号： H04N19/132 ,  H04N19/14 ,  H04N19/176 ,  H04N19/186

摘要： The present disclosure provides systems and methods for processing video content. The method can include: receiving data representing a first block and a second block in a picture, the data comprising a plurality of chroma samples associated with the first block and a plurality of luma samples associated with the second block; determining an average value of the plurality of luma samples associated with the second block; determining a chroma scaling factor for the first block based on the average value; and processing the plurality of chroma samples associated with the first block using the chroma scaling factor.

公开(公告)号：US20240267529A1

公开(公告)日：2024-08-08

申请号：US18107295

申请日：2023-02-08

申请人： NVIDIA Corporation

发明人： Jianjun Chen ,  Junan Chen ,  Yonghai Wu ,  Yongmao Tang ,  Xinan Lu

IPC分类号： H04N19/14 ,  H04N19/105 ,  H04N19/176 ,  H04N19/18

CPC分类号： H04N19/14 ,  H04N19/105 ,  H04N19/176 ,  H04N19/18

摘要： Disclosed are apparatuses, systems, and techniques for efficient real-time codec encoding of video files. In one embodiment, the techniques include generating a block of predicted pixels that approximates a block of source pixels of an image frame and representing a difference between the block of source pixels and the block of predicted pixels via a plurality of transformation coefficients (TCs). The techniques further include evaluating TCs using statistical data for neighborhoods of the TCs to select an action for a respective TC, including adjusting the respective TC or maintaining the respective TC.