公开(公告)号：US12126832B2

公开(公告)日：2024-10-22

申请号：US18147082

申请日：2022-12-28

申请人： V-NOVA INTERNATIONAL LIMITED

发明人： Guido Meardi

IPC分类号： H04N19/00 ,  H04N19/105 ,  H04N19/122 ,  H04N19/124 ,  H04N19/136 ,  H04N19/33 ,  H04N19/36 ,  H04N19/44 ,  H04N19/46 ,  H04N19/60 ,  H04N19/61 ,  H04N19/70 ,  H04N19/91 ,  H04N19/93

CPC分类号： H04N19/61 ,  H04N19/105 ,  H04N19/122 ,  H04N19/124 ,  H04N19/136 ,  H04N19/33 ,  H04N19/36 ,  H04N19/44 ,  H04N19/46 ,  H04N19/60 ,  H04N19/70 ,  H04N19/91 ,  H04N19/93

摘要： There is disclosed a method of encoding an input signal, the method comprising: receiving a base encoded signal, the base encoded signal being generated by feeding an encoder with a down-sampled version of an input signal; producing a first residual signal by: decoding the base encoded signal to produce a first decoded signal; and using a difference between the base decoded signal and the down-sampled version of the input signal to produce the first residual signal; producing a second residual signal by: correcting the base decoded signal using the residual signal to create a corrected decoded version; up-sampling the corrected decoded version; and using a difference between the up-sampled corrected decoded signal and the input signal to produce the second residual signal; wherein the up-sampling is one of bilinear or bicubic up-sampling. A corresponding decoding method is also disclosed.

公开(公告)号：US12120305B2

公开(公告)日：2024-10-15

申请号：US18057086

申请日：2022-11-18

申请人： V-NOVA INTERNATIONAL LIMITED

发明人： Simone Ferrara ,  Guido Meardi

IPC分类号： H04N19/132 ,  H04N19/172 ,  H04N19/184 ,  H04N19/186 ,  H04N19/30 ,  H04N19/33 ,  H04N19/46 ,  H04N19/98

CPC分类号： H04N19/132 ,  H04N19/172 ,  H04N19/184 ,  H04N19/186 ,  H04N19/30 ,  H04N19/33 ,  H04N19/46 ,  H04N19/98

摘要： There is provided a method for processing an input signal (700). The input signal (700) is processed at least by converting the input signal (700) from a first colour space to a second colour space, to produce a first processed signal. The processed signal is encoded by a first encoding module (703) to generate a first encoded signal (710). A decoded signal is generated by decoding the first encoded signal (710). The decoded signal is processed at least by converting the decoded signal from the second colour space to the first colour space to produce a second processed signal. The second processed signal and the input signal (700) are processed by a second encoding module (707) to generate a second encoded signal (720).

公开(公告)号：US20240314341A1

公开(公告)日：2024-09-19

申请号：US18666025

申请日：2024-05-16

申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

发明人： Robert SKUPIN ,  Yago SÁNCHEZ DE LA FUENTE ,  Thomas SCHIERL ,  Cornelius HELLGE ,  Karsten GRUENEBERG ,  Thomas WIEGAND

IPC分类号： H04N19/33 ,  H04N19/119 ,  H04N19/132 ,  H04N19/146 ,  H04N19/167 ,  H04N19/174 ,  H04N19/34 ,  H04N19/46 ,  H04N19/70 ,  H04N19/88

CPC分类号： H04N19/33 ,  H04N19/119 ,  H04N19/132 ,  H04N19/146 ,  H04N19/167 ,  H04N19/174 ,  H04N19/34 ,  H04N19/46 ,  H04N19/70 ,  H04N19/88

摘要： A video data stream is rendered reducible in a manner so that the reduction leads to a restriction of pictures of the reduced video data stream to merely a predetermined subarea of the pictures of the original video data stream and in a manner so that transcoding, such as re-quantization, may be avoided and a conformance of the reduced video data stream relative to the codec underlying the original video data stream be maintained. This is achieved by providing the video data stream with information including an indication of the predetermined subarea and replacement indices for redirecting the indices included by the payload portion so as to refer to, and/or replacement parameters for adjusting the first set of coding parameter settings so as to result in, a second set of coding parameter settings.

公开(公告)号：US20240305813A1

公开(公告)日：2024-09-12

申请号：US18666189

申请日：2024-05-16

申请人： VID SCALE, INC.

发明人： Yong He ,  Ralph Neff ,  Yuwen He

IPC分类号： H04N19/59 ,  H04N19/172 ,  H04N19/33 ,  H04N19/70

CPC分类号： H04N19/59 ,  H04N19/172 ,  H04N19/33 ,  H04N19/70

摘要： Methods and apparatus relate to picture and video coding in communication systems are provided. Included therein is a method comprising determining one or more layers associated with a parameter set, generating a syntax element including an indication indicating whether the one or more layers associated with the parameter set are independently coded, and generating a message including the syntax element.

公开(公告)号：US20240305798A1

公开(公告)日：2024-09-12

申请号：US18665493

申请日：2024-05-15

申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

发明人： Robert SKUPIN ,  Yago SÁNCHEZ DE LA FUENTE ,  Thomas SCHIERL ,  Cornelius HELLGE ,  Karsten GRUENEBERG ,  Thomas WIEGAND

IPC分类号： H04N19/33 ,  H04N19/119 ,  H04N19/132 ,  H04N19/146 ,  H04N19/167 ,  H04N19/174 ,  H04N19/34 ,  H04N19/46 ,  H04N19/70 ,  H04N19/88

CPC分类号： H04N19/33 ,  H04N19/119 ,  H04N19/132 ,  H04N19/146 ,  H04N19/167 ,  H04N19/174 ,  H04N19/34 ,  H04N19/46 ,  H04N19/70 ,  H04N19/88

摘要： A video data stream is rendered reducible in a manner so that the reduction leads to a restriction of pictures of the reduced video data stream to merely a predetermined subarea of the pictures of the original video data stream and in a manner so that transcoding, such as re-quantization, may be avoided and a conformance of the reduced video data stream relative to the codec underlying the original video data stream be maintained. This is achieved by providing the video data stream with information including an indication of the predetermined subarea and replacement indices for redirecting the indices included by the payload portion so as to refer to, and/or replacement parameters for adjusting the first set of coding parameter settings so as to result in, a second set of coding parameter settings.

公开(公告)号：US20240298017A1

公开(公告)日：2024-09-05

申请号：US18636060

申请日：2024-04-15

申请人： NOKIA TECHNOLOGIES OY

发明人： Miska Matias HANNUKSELA

IPC分类号： H04N19/33 ,  H04N19/105 ,  H04N19/136 ,  H04N19/172 ,  H04N19/46 ,  H04N19/70

CPC分类号： H04N19/33 ,  H04N19/105 ,  H04N19/136 ,  H04N19/172 ,  H04N19/46 ,  H04N19/70

摘要： There is provided methods, apparatuses and computer program products for video coding and decoding. A first part of a first coded video representation is decoded, and information on decoding a second coded video representation is received and parsed. The coded second representation differs from the first coded video representation in chroma format, sample bit depth, color gamut and/or spatial resolution, and the information indicates if the second coded video representation may be decoded using processed decoded pictures of the first coded video representation as reference pictures. If the information indicates that the second coded video representation may be decoded using processed decoded pictures of the first coded video representation as a prediction reference, decoded picture(s) of the first part is/are processed into processed decoded picture(s) by resampling and/or sample value scaling; and decoding a second part of a second video representation using said processed decoded picture(s) as reference pictures.

公开(公告)号：US12081735B2

公开(公告)日：2024-09-03

申请号：US17629385

申请日：2020-07-24

申请人： WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

发明人： Geonjung Ko ,  Dongcheol Kim ,  Juhyung Son ,  Jaehong Jung ,  Jinsam Kwak

IPC分类号： H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/167 ,  H04N19/176 ,  H04N19/186 ,  H04N19/33 ,  H04N19/593 ,  H04N19/139

CPC分类号： H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/167 ,  H04N19/176 ,  H04N19/186 ,  H04N19/33 ,  H04N19/593 ,  H04N19/139

摘要： A method for processing a video signal, of the present disclosure, comprising the steps of: parsing, from a bitstream, upper level merge with MVD (MMVD) activation information (sps_mmvd_enabled_flag) indicating whether the upper level MMVD including a current block is usable; parsing, from the bitstream, MMVD merge information (mmvd_merge_flag) indicating whether the MMVD is used in the current block, if the upper level MMVD activation information indicates the activation of the MMVD; parsing MMVD distance-related information (mmvd_distance_idx) and MMVD direction-related information (mmvd_direction_idx), if the MMVD merge information indicates that the MMVD is used in the current block; and obtaining MMVD information (mMvdLX) based on the MMVD distance-related information and the MMVD direction-related information, wherein the MMVD information is greater than or equal to −2{circumflex over ( )}17 and is less than or equal to 2{circumflex over ( )}17−1.

公开(公告)号：US20240276000A1

公开(公告)日：2024-08-15

申请号：US18632251

申请日：2024-04-10

申请人： TENCENT AMERICA LLC

发明人： Guichun LI ,  Xiaozhong XU ,  Xiang LI ,  Shan LIU

IPC分类号： H04N19/44 ,  H04N19/105 ,  H04N19/132 ,  H04N19/139 ,  H04N19/176 ,  H04N19/33

CPC分类号： H04N19/44 ,  H04N19/105 ,  H04N19/132 ,  H04N19/139 ,  H04N19/176 ,  H04N19/33

摘要： A method for video encoding includes determining a corresponding motion vector for each of multiple control points of a base predictor. The method further includes determining a corresponding motion vector difference for each of the multiple control points of the base predictor based on the determined motion vector for each respective control point. The method further includes generating prediction information of the current block to be included in a coded video bitstream. The prediction information includes (i) a usage flag indicative of the affine merge mode with offset, (ii) offset parameters defining the determined corresponding motion vector difference for each of the one or more of the control points, and (iii) a zero motion vector difference flag for the multiple control points of the base predictor. The zero motion vector difference flag indicates whether offset parameters for the respective control point are provided in the prediction information.

公开(公告)号：US20240236344A9

公开(公告)日：2024-07-11

申请号：US18386574

申请日：2023-11-02

申请人： ARRIS Enterprises LLC

发明人： Koohyar MINOO ,  David M. BAYLON ,  Ajay LUTHRA

IPC分类号： H04N19/36 ,  H04N19/105 ,  H04N19/167 ,  H04N19/186 ,  H04N19/187 ,  H04N19/33 ,  H04N19/503 ,  H04N19/70

CPC分类号： H04N19/36 ,  H04N19/105 ,  H04N19/167 ,  H04N19/186 ,  H04N19/187 ,  H04N19/33 ,  H04N19/503 ,  H04N19/70 ,  H04N19/59

摘要： A process for determining the selection of filters and input samples is provided for scalable video coding. The process provides for re-sampling using video data obtained from an encoder or decoder process of a base layer (BL) in a multi-layer system to improve quality in Scalable High Efficiency Video Coding (SHVC). In order to provide better alignment between layers, it is proposed that reference layer offset adjustment parameters be signaled.

公开(公告)号：US12034948B2

公开(公告)日：2024-07-09

申请号：US18314641

申请日：2023-05-09

申请人： HUAWEI TECHNOLOGIES CO., LTD.

发明人： Takeshi Tsukuba ,  Tomohiro Ikai ,  Tomoyuki Yamamoto

IPC分类号： H04N19/33 ,  H04N19/17 ,  H04N19/176 ,  H04N19/31 ,  H04N19/36 ,  H04N19/44 ,  H04N19/70

CPC分类号： H04N19/31 ,  H04N19/17 ,  H04N19/33 ,  H04N19/36 ,  H04N19/44 ,  H04N19/70

摘要： In a conventional art, an output layer set having no output layer is sometimes defined. Consequently, even if the decoder decodes a bit stream to obtain each layer in the output layer set without the output layer, there is no picture to be outputted. There is a possibility that such coded data causes the decoder expecting an output to operate unexpectedly. Output layer sets having the same configuration may be defined. Consequently, the amount of code pertaining to the output layer sets defined in an overlapping manner is redundant. According to an aspect of the present disclosure, a specification of a bit stream conformance pertaining to the output layer set prevents occurrence of an output layer set without an output layer and a redundant output layer set.