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公开(公告)号：US20240323422A1
公开(公告)日：2024-09-26
申请号：US18680800
申请日：2024-05-31
Applicant: Intel Corporation
Inventor： Jill Boyce , Lidong Xu
IPC: H04N19/46 , H04N19/136 , H04N19/146 , H04N19/167 , H04N19/172 , H04N19/42
CPC classification number: H04N19/46 , H04N19/136 , H04N19/146 , H04N19/167 , H04N19/172 , H04N19/42
Abstract: Disclosed examples populate a supplemental enhancement information (SEI) message with a value corresponding to a number of subpictures of a video sequence; populate a level indicator in the SEI message; populate a subpicture identifier; populate the subpicture identifier in a slice header, and cause the SEI message and the slice header to be included in a video bitstream.
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公开(公告)号：US20240323421A1
公开(公告)日：2024-09-26
申请号：US18732084
申请日：2024-06-03
Applicant: ARRIS Enterprises LLC
Inventor： Zhouye Gu , Koohyar Minoo
CPC classification number: H04N19/44 , G06T5/92 , H04L65/70 , H04N19/136 , H04N19/46 , H04N19/85 , G06T2207/10016 , G06T2207/10024 , G06T2207/20004 , G06T2207/20208
Abstract: A method of decoding a bitstream comprising decoding the bitstream into color values and metadata items indicating information about adaptive post-processing operations performed by a decoder, performing high dynamic range (HDR) adaptation operations on the color values based on the metadata items, and performing fixed post-processing operations to reconstruct an HDR video from the color values, wherein the HIDR adaptation operations convert color values into a format expected by the fixed post-processing operations.
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公开(公告)号：US20240323389A1
公开(公告)日：2024-09-26
申请号：US18735721
申请日：2024-06-06
Applicant: Tencent America LLC
Inventor： Lien-Fei CHEN , Xiang LI , Shan LIU
IPC: H04N19/136 , H04N19/105 , H04N19/176 , H04N19/88
CPC classification number: H04N19/136 , H04N19/105 , H04N19/176 , H04N19/88
Abstract: Aspects of the disclosure provide methods and apparatuses for video coding. A method for video decoding includes receiving a coded video bitstream that includes prediction information of a current block in a current picture. The prediction information indicates that an adaptive motion vector prediction (AMVP) mode and an adaptive motion vector resolution (AMVR) mode are applied to the current block. A set of motion vector (MV) resolutions in the AMVR mode is available for the current block. The method includes determining respective template matching (TM) costs corresponding to each of a plurality of MV resolutions in the set of MV resolutions based on the plurality of MV resolutions and motion information of the current block, reordering the plurality of MV resolutions based on the determined TM costs, selecting an MV resolution from the reordered plurality of MV resolutions, and reconstructing the current block based on the selected MV resolution.
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公开(公告)号：US20240323388A1
公开(公告)日：2024-09-26
申请号：US18672692
申请日：2024-05-23
Applicant: Telefonaktiebolaget LM Ericsson (publ)
Inventor： Rickard SJÖBERG , Martin PETTERSSON , Mitra DAMGHANIAN
IPC: H04N19/136 , H04N19/169 , H04N19/172 , H04N19/46
CPC classification number: H04N19/136 , H04N19/172 , H04N19/188 , H04N19/46
Abstract: A method for decoding a set of pictures from a bitstream. In one embodiment, the method comprises obtaining a layer access (LA) indication identifying an LA picture in an access unit, wherein i) the LA picture has a layer identifier value that identifies a layer and ii) the LA picture is followed by other pictures in a decoding order. The method comprises determining, based on the LA indication, an LA position in the bitstream. The method comprises decoding the LA picture and the other pictures following the LA picture in the decoding order, wherein no parameter set that: a) has a particular type, b) has a layer identifier value equal to the layer identifier value of the LA picture, and c) precedes the LA position is used for decoding the LA picture.
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公开(公告)号：US20240323382A1
公开(公告)日：2024-09-26
申请号：US18733380
申请日：2024-06-04
Applicant: ARRIS Enterprises LLC
Inventor： Koohyar Minoo , Zhouye Gu , David M. Baylon , Ajay Luthra
IPC: H04N19/124 , H04N19/117 , H04N19/136 , H04N19/172 , H04N19/174 , H04N19/179 , H04N19/182 , H04N19/186 , H04N19/36 , H04N19/46
CPC classification number: H04N19/124 , H04N19/117 , H04N19/136 , H04N19/172 , H04N19/182 , H04N19/186 , H04N19/36 , H04N19/46 , H04N19/174 , H04N19/179
Abstract: A method of encoding a digital video data applies adaptive pre-processing to data representing high dynamic range (HDR) and/or wide color gamut (WCG) image data prior to encoding and complementary post-processing to the data after decoding in order to allow at least partial reproduction of the HDR and/or WCG data. The example methods apply one or more color space conversions, and a perceptual transfer functions to the data prior to quantization. The example methods apply inverse perceptual transfer functions and inverse color space conversions after decoding to recover the HDR and/or WCG data. The transfer functions are adaptive so that different transfer functions may be applied to video data sets including different groups of frames, frames or processing windows in a single frame. Information on the data set and information on the applied transfer function is passed as metadata from the encoder to the decoder.
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公开(公告)号：US12096014B2
公开(公告)日：2024-09-17
申请号：US18235700
申请日：2023-08-18
Applicant: ARRIS Enterprises LLC
Inventor： Koohyar Minoo , Zhouye Gu , David M. Baylon , Ajay Luthra
IPC: H04N19/40 , H04N19/124 , H04N19/126 , H04N19/132 , H04N19/136 , H04N19/154 , H04N19/172 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/44 , H04N19/70 , H04N19/98
CPC classification number: H04N19/40 , H04N19/124 , H04N19/126 , H04N19/132 , H04N19/136 , H04N19/154 , H04N19/172 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/44 , H04N19/70 , H04N19/98
Abstract: A method is provided for encoding a digital video to improve perceptual quality. The method includes receiving a digital video at a video encoder, providing a perceptual quantizer function defined by
P
Q
(
L
)
=
(
c
1
+
c
2
L
m
1
1
+
c
3
L
m
1
)
m
2
,
wherein L is a luminance value, c1, c2, c3, and m1 are parameters with fixed values, and m2 is a parameter with a variable value, adapting the perceptual quantizer function by adjusting the value of the m2 parameter based on different luminance value ranges found within a coding level of the digital video, encoding the digital video into a bitstream using, in part, the perceptual quantizer function, transmitting the bitstream to a decoder, and transmitting the value of the m2 parameter to the decoder for each luminance value range in the coding level.
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公开(公告)号：US20240305769A1
公开(公告)日：2024-09-12
申请号：US18665184
申请日：2024-05-15
Applicant: Intel Corporation
Inventor： Jason Daniel Tanner , James Holland , Stanley Jacob Baran , Satya Yedidi , Penne Yat-Pei Lee , Sumit Bhatia
IPC: H04N19/103 , H04N19/136 , H04N19/172 , H04N19/177
CPC classification number: H04N19/103 , H04N19/136 , H04N19/172 , H04N19/177
Abstract: Systems, apparatus, articles of manufacture, and methods are disclosed of adaptive configurations of video encoder preset modes. An example apparatus comprising interface circuitry to obtain a video to be encoded, instructions, and at least one processor circuit to be programmed by the instructions to configure a video encoder to encode a first frame of the video based on a first preset mode of a plurality of preset modes associated respectively with a plurality of different relative encoder performance targets, select a second preset mode of the plurality of preset modes based on one or more characteristics associated with a second frame of the video, the second preset mode different from the first preset mode, and configure the video encoder to encode the second frame based on the second preset mode.
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公开(公告)号：US12088824B2
公开(公告)日：2024-09-10
申请号：US17620994
申请日：2020-06-26
Applicant: S.A. VITEC
Inventor： Jean-Marc Thiesse , David Gommelet , Didier Nicholson , Madhukar Bhat
IPC: H04N19/157 , H04N19/103 , H04N19/136 , H04N19/463
CPC classification number: H04N19/157 , H04N19/103 , H04N19/136 , H04N19/463
Abstract: A method for decoding a bitstream comprising a sequence of encoded images. The method includes: obtaining first information from first encoded data contained in the bitstream; determining a list of coding parameters on the basis of the first information and of at least one predefined list of coding parameters; obtaining second information from second encoded data contained in the bitstream, the second information corresponding to a coding parameter among the coding parameters in the list of coding parameters; determining an element of a reconstructed image corresponding to an element of an image in the sequence of images, by means of the coding parameter corresponding to the second information and of encoded data representative of the element of the image in the sequence; wherein the size of the second encoded data depends on the number of coding parameters in the list of coding parameters.
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19.发明公开
公开(公告)号：US20240298000A1
公开(公告)日：2024-09-05
申请号：US18442430
申请日：2024-02-15
Applicant: Sun Patent Trust
Inventor： Viktor WAHADANIAH , Chong Soon LIM , Sue Mon Thet NAING , Hai Wei SUN , Takahiro NISHI , Hisao SASAI , Youji SHIBAHARA , Toshiyasu SUGIO , Kyoko TANIKAWA , Toru MATSUNOBU , Kengo TERADA
IPC: H04N19/134 , H04N19/105 , H04N19/115 , H04N19/119 , H04N19/136 , H04N19/172 , H04N19/174 , H04N19/42 , H04N19/423 , H04N19/44 , H04N19/573 , H04N19/58 , H04N19/70
CPC classification number: H04N19/134 , H04N19/105 , H04N19/115 , H04N19/119 , H04N19/136 , H04N19/172 , H04N19/174 , H04N19/42 , H04N19/423 , H04N19/44 , H04N19/573 , H04N19/58 , H04N19/70
Abstract: An image coding method includes: writing, into a sequence parameter set, buffer description defining information for defining a plurality of buffer descriptions; writing, into the sequence parameter set, reference list description defining information for defining a plurality of reference list descriptions corresponding to the buffer descriptions; and writing, into a first header of each processing unit which is included in a coded bitstream, buffer description selecting information for specifying a selected buffer description.
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公开(公告)号：US12081786B2
公开(公告)日：2024-09-03
申请号：US17801888
申请日：2020-02-25
Applicant: Nippon Telegraph and Telephone Corporation
Inventor： Masanori Koike , Yuichiro Urata , Kazuhisa Yamagishi
IPC: H04N19/463 , H04N19/136 , H04N19/154 , H04N19/17
CPC classification number: H04N19/463 , H04N19/136 , H04N19/154 , H04N19/17
Abstract: A VR video encoding parameter calculation device includes a quality estimation unit configured to calculate an overall quality estimation value of a VR video for an individual encoding parameter of a plurality of encoding parameters and a VR video parameter extraction unit configured to extract an encoding parameter corresponding to the overall quality estimation value that satisfies given target quality from the plurality of encoding parameters.
