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公开(公告)号：US20240179340A1
公开(公告)日：2024-05-30
申请号：US18392158
申请日：2023-12-21
发明人： Sebastian BOSSE , Heiko SCHWARZ , Thomas WIEGAND , Tobias HINZ
IPC分类号： H04N19/52 , H04N19/463 , H04N19/553 , H04N19/597
CPC分类号： H04N19/52 , H04N19/463 , H04N19/553 , H04N19/597
摘要： A proposed intermediate way of handling the renderable portion of the first view results in more efficient coding. Instead of omitting the coding of the renderable portion completely, even more efficient coding of multi-view signals entails merely suppressing the coding of the residual signal within the renderable portion, whereas the prediction parameter coding still takes place from the non-renderable portion of the multi-view signal across the renderable portion so that prediction parameters for the renderable portion may be exploited for predicting parameters for the non-renderable portion. The additional coding rate for transmitting the prediction parameters for the renderable portion may be kept low as this merely aims at forming a continuation of the parameter history across the renderable portion to serve as a basis for prediction parameters of other portions of the multi-view signal.
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公开(公告)号：US20220217316A1
公开(公告)日：2022-07-07
申请号：US17576873
申请日：2022-01-14
发明人： Heiko SCHWARZ , Thomas WIEGAND
IPC分类号： H04N13/128 , H04N13/161 , H04N19/194 , H04N19/513 , H04N19/597 , H04N19/46 , H04N19/52 , H04N19/895
摘要： The usual coding order according to which the reference view is coded prior to the dependent view, and within each view, a depth map is coded subsequent to the respective picture, may be maintained and does lead to a sacrifice of efficiency in performing inter-view redundancy removal by, for example, predicting motion data of the current picture of the dependent view from motion data of the current picture of the reference view. Rather, a depth map estimate of the current picture of the dependent view is obtained by warping the depth map of the current picture of the reference view into the dependent view, thereby enabling various methods of inter-view redundancy reduction more efficiently by bridging the gap between the views. According to another aspect, the following discovery is exploited: the overhead associated with an enlarged list of motion predictor candidates for a block of a picture of a dependent view is comparatively low compared to a gain in motion vector prediction quality resulting from an adding of a motion vector candidate which is determined from an, in disparity-compensated sense, co-located block of a reference view.
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公开(公告)号：US20210281861A1
公开(公告)日：2021-09-09
申请号：US17330197
申请日：2021-05-25
发明人： Philipp HELLE , Heiko SCHWARZ , Detlev MARPE , Thomas WIEGAND , Simon OUDIN , Benjamin BROSS
IPC分类号： H04N19/176 , H04N19/119 , H04N19/61 , H04N19/196 , H04N19/46 , H04N19/147 , H04N19/93 , H04N19/70
摘要： A further coding efficiency increase may be achieved if for a current block of a picture, for which the bit stream signals one of supported partitioning patterns, a reversal of the partitioning by block merging is avoided. In particular, if the signaled one of the supported partitioning patterns specifies a subdivision of the block into two or more further blocks, a removal of certain coding parameter candidates for all further blocks, except a first further block of the further blocks in a coding order, is performed. Particularly, those coding parameter candidates are removed from the set of coding parameter candidates for the respective further block, the coding parameters of which are the same as coding parameters associated with any of the further blocks which, when being merged with the respective further block, would result in one of the supported partitioning pattern. This avoids redundancy between partitioning coding and merging coding.
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4.发明申请公开(公告)号：US20210266563A9
公开(公告)日：2021-08-26
申请号：US16459940
申请日：2019-07-02
发明人： Tobias HINZ , Haricharan LAKSHMAN , Jan STEGEMANN , Philipp HELLE , Mischa SIEKMANN , Karsten SUEHRING , Detlev MARPE , Heiko SCHWARZ , Christian BARTNIK , Ali Atef Ibrahim KHAIRAT ABDELHAMID , Heiner KIRCHHOFFER , Thomas WIEGAND
IPC分类号： H04N19/159 , H04N19/117 , H04N19/136 , H04N19/176
摘要： A scalable video decoder is described which is configured to reconstruct a base layer signal from a coded data stream to obtain a reconstructed base layer signal; and reconstruct an enhancement layer signal including spatially or temporally predicting a portion of an enhancement layer signal, currently to be reconstructed, from an already reconstructed portion of the enhancement layer signal to obtain an enhancement layer internal prediction signal; forming, at the portion currently to be reconstructed, a weighted average of an inter-layer prediction signal obtained from the reconstructed base layer signal, and the enhancement layer internal prediction signal to obtain an enhancement layer prediction signal such that a weighting between the inter-layer prediction signal and the enhancement layer internal prediction signal varies over different spatial frequency components; and predictively reconstructing the enhancement layer signal using the enhancement layer prediction signal.
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公开(公告)号：US20210211686A1
公开(公告)日：2021-07-08
申请号：US17212396
申请日：2021-03-25
发明人： Heiner KIRCHHOFFER , Heiko SCHWARZ , Tung NGUYEN , Detlev MARPE , Thomas WIEGAND
IPC分类号： H04N19/18 , H04N19/124 , H04N19/129 , H04N19/13 , H04N19/136 , H04N19/139 , H04N19/91 , H04N19/46 , H04N19/50 , H04N19/51 , H04N19/59 , H04N19/61 , H04N19/70 , H04N19/176
摘要： A higher coding efficiency for coding a significance map indicating positions of significant transform coefficients within a transform coefficient block is achieved by the scan order by which the sequentially extracted syntax elements indicating, for associated positions within the transform coefficient block, as to whether at the respective position a significant or insignificant transform coefficient is situated, are sequentially associated to the positions of the transform coefficient block, among the positions of the transform coefficient block depends on the positions of the significant transform coefficients indicated by previously associated syntax elements. Alternatively, the first-type elements may be context-adaptively entropy decoded using contexts which are individually selected for each of the syntax elements dependent on a number of significant transform coefficients in a neighborhood of the respective syntax element, indicated as being significant by any of the preceding syntax elements.
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公开(公告)号：US20210029365A1
公开(公告)日：2021-01-28
申请号：US17065934
申请日：2020-10-08
IPC分类号： H04N19/159 , H04N19/103 , H04N19/119 , H04N19/147 , H04N19/176 , H04N19/186 , H04N19/96 , H04N19/46 , H04N19/463 , H04N19/597 , H04N19/61 , H04N19/70 , H04N19/196
摘要： A better rate distortion ratio is achieved by making interrelationships between coding parameters of different planes available for exploitation for the aim of redundancy reduction despite the additional overhead resulting from the need to signal the inter-plane prediction information to the decoder. In particular, the decision to use inter plane prediction or not may be performed for a plurality of planes individually. Additionally or alternatively, the decision may be done on a block basis considering one secondary plane.
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公开(公告)号：US20200252595A1
公开(公告)日：2020-08-06
申请号：US16857608
申请日：2020-04-24
发明人： Thomas WIEGAND , Detlev MARPE , Karsten MUELLER , Philipp MERKLE , Gerhard TECH , Hunn RHEE , Heiko SCHWARZ
IPC分类号： H04N13/161 , H04N19/597 , H04N19/196 , H04N19/139 , H04N19/61 , H04N19/159 , H04N19/176
摘要： Embodiments are described which exploit a finding, according to which a higher compression rate or better rate/distortion ratio may be achieved by adopting or predicting second coding parameters used for encoding a second view of the multi-view signal from first coding parameters used in encoding a first view of the multi-view signal. In other words, the inventors found out that the redundancies between views of a multi-view signal are not restricted to the views themselves, such as the video information thereof, but that the coding parameters in parallely encoding these views show similarities which may be exploited in order to further improve the coding rate.
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公开(公告)号：US20200186164A1
公开(公告)日：2020-06-11
申请号：US16779851
申请日：2020-02-03
发明人： Detlev MARPE , Tung NGUYEN , Heiko SCHWARZ , Thomas WIEGAND
摘要： Decomposing a value range of the respective syntax elements into a sequence of n partitions with coding the components of z laying within the respective partitions separately with at least one by VLC coding and with at least one by PIPE or entropy coding is used to greatly increase the compression efficiency at a moderate coding overhead since the coding scheme used may be better adapted to the syntax element statistics. Accordingly, syntax elements are decomposed into a respective number n of source symbols si with i=1 . . . n, the respective number n of source symbols depending on as to which of a sequence of n partitions into which a value range of the respective syntax elements is sub-divided, a value z of the respective syntax elements falls into, so that a sum of values of the respective number of source symbols si yields z, and, if n>1, for all i=1 . . . n−1, the value of si corresponds to a range of the ith partition.
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公开(公告)号：US20200036956A1
公开(公告)日：2020-01-30
申请号：US16592433
申请日：2019-10-03
发明人： Heiko SCHWARZ , Thomas WIEGAND
IPC分类号： H04N13/161 , H04N13/128 , H04N19/597 , H04N19/52 , H04N19/46 , H04N19/194 , H04N19/513 , H04N19/895
摘要： This disclosure is directed to coding a multi-view signal, which includes processing a list of plurality of motion vector candidates associated with a coding block of a current picture in a dependent view of the multi-view signal. Such processing includes estimating a first motion vector based on a second motion vector associated with a reference block in a current picture of a reference view of the multi-view signal, the reference block corresponding to the coding block of the current picture in the dependent view. The first motion vector is added into the list, and an index is used that specifies at least one candidate from the list to be used for motion-compensated prediction. The coding block in the current picture is coded by performing the motion-compensated prediction based on the at least one candidate indicated by the index.
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公开(公告)号：US20190306539A1
公开(公告)日：2019-10-03
申请号：US16446150
申请日：2019-06-19
发明人： Heiner KIRCHHOFFER , Martin WINKEN , Philipp HELLE , Detlev MARPE , Heiko SCHWARZ , Thomas WIEGAND
IPC分类号： H04N19/96 , H04N19/61 , H04N19/169 , H04N19/593 , H04N19/59 , H04N19/52 , H04N19/176 , H04N19/53 , H04N19/46 , H04N19/17
摘要： Coding schemes for coding a spatially sampled information signal using sub-division and coding schemes for coding a sub-division or a multitree structure are described, wherein representative embodiments relate to picture and/or video coding applications.
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