公开(公告)号：US11089336B2

公开(公告)日：2021-08-10

申请号：US16778239

申请日：2020-01-31

申请人： Sun Patent Trust

发明人： Semih Esenlik ,  Matthias Narroschke ,  Steffen Kamp ,  Thomas Wedi

IPC分类号： H04N19/70 ,  H04N19/117 ,  H04N19/174 ,  H04N19/463 ,  H04N19/80

摘要： The present invention provides an improved video encoding and decoding method, which maintains the advantages of LCU-based filter parameter signaling as compared to frame-based filter parameter signaling, but considerably reduces signaling overhead. Therefore, signaling syntax is modified by grouping LCUs (Largest Coding Units) together for signaling employing a mapping function. Consequently, filter parameters no longer need to be signaled for each single LCU, but for a group of several LCUs. The syntax structure of the invention avoids redundancies present in the state of the art as far as possible and thus increases the information content of the syntax elements. At the decoder side, the mapping function is applied to infer information about the filter parameters to be applied to a current LCU from information encoded in different syntax structures.

公开(公告)号：US10924764B2

公开(公告)日：2021-02-16

申请号：US16710346

申请日：2019-12-11

申请人： Sun Patent Trust

发明人： Matthias Narroschke ,  Thomas Wedi

IPC分类号： H04N19/61 ,  H04N19/117 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/86 ,  H04N19/82

摘要： An image processing method of performing filtering on image blocks using a plurality of deblocking filters having different filter strengths includes: a first parameter calculating step of calculating a first parameter indicating a boundary strength; a second parameter calculating step of calculating a second parameter indicating a limit value for each of the deblocking filters, based on the first parameter and a quantization parameter; and a selecting step of selecting a deblocking filter to be used in the filtering from among the deblocking filters, using one or more threshold values which are determined based on the second parameter.

公开(公告)号：US10397593B2

公开(公告)日：2019-08-27

申请号：US15915489

申请日：2018-03-08

申请人： Sun Patent Trust

发明人： Semih Esenlik ,  Matthias Narroschke ,  Thomas Wedi

IPC分类号： H04N19/11 ,  H04N19/17 ,  H04N19/44 ,  H04N19/46 ,  H04N19/61 ,  H04N13/189 ,  H04N19/119 ,  H04N19/136 ,  H04N19/167 ,  H04N19/174 ,  H04N19/176 ,  H04N19/192 ,  H04N19/436 ,  H04N19/597

摘要： An image decoding method for decoding a bitstream including a coded signal resulting from coding tiles and slices into which an image is partitioned, the method including decoding the coded signal, wherein each of the slices is either a normal slice having, in a header, information used for an other slice or a dependent slice which is decoded using information included in a slice header of another slice, and when the normal slice starts from a position other than a beginning of a first tile, a second tile coded next to the first tile does not start from the dependent slice.

公开(公告)号：US09667978B2

公开(公告)日：2017-05-30

申请号：US15378418

申请日：2016-12-14

申请人： SUN PATENT TRUST

发明人： Matthias Narroschke ,  Thomas Wedi ,  Semih Esenlik

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

CPC分类号： H04N19/176 ,  H04N19/117 ,  H04N19/14 ,  H04N19/80 ,  H04N19/82 ,  H04N19/86

摘要： The present invention relates to deblocking filtering, which may be advantageously applied for block-wise encoding and decoding of image or video signal. In particular, the present invention relates to performing an efficient and accurate decision on whether or not to apply deblocking filtering on an image block. The efficient and accurate decision is achieved by performing individual decisions on whether or not to apply deblocking filtering for segments of a boundary between adjacent image blocks, wherein the individual decision are based on pixels comprised in a subset of the pixel lines that the image blocks are composed of.

公开(公告)号：US10992944B2

公开(公告)日：2021-04-27

申请号：US16506359

申请日：2019-07-09

申请人： Sun Patent Trust

发明人： Semih Esenlik ,  Matthias Narroschke ,  Thomas Wedi

IPC分类号： H04N19/44 ,  H04N13/189 ,  H04N19/597 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61 ,  H04N19/436 ,  H04N19/174 ,  H04N19/11 ,  H04N19/136 ,  H04N19/192 ,  H04N19/119 ,  H04N19/167 ,  H04N19/17

摘要： An image decoding method for decoding a bitstream including a coded signal resulting from coding tiles and slices into which an image is partitioned, the method including decoding the coded signal, wherein each of the slices is either a normal slice having, in a header, information used for an other slice or a dependent slice which is decoded using information included in a slice header of another slice, and when the normal slice starts from a position other than a beginning of a first tile, a second tile coded next to the first tile does not start from the dependent slice.

公开(公告)号：US10375417B2

公开(公告)日：2019-08-06

申请号：US16219148

申请日：2018-12-13

申请人： Sun Patent Trust

发明人： Thomas Wedi ,  Anand Kotra ,  Matthias Narroschke ,  Semih Esenlik

IPC分类号： H04N19/86 ,  H04N19/50 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/117 ,  H04N19/14 ,  H04N19/105 ,  H04N19/124 ,  H04N19/172 ,  H04N19/182 ,  H04N19/184

摘要： The present invention relates to an advantageous scheme for boundary strength derivation and decision processing related to deblocking filtering. More particularly, the present invention improves schemes for deciding deblocking and selecting appropriate deblocking filters known in the art so as to reduce the number of calculation cycles and required memory space.

公开(公告)号：US10212432B2

公开(公告)日：2019-02-19

申请号：US15488899

申请日：2017-04-17

申请人： Sun Patent Trust

发明人： Matthias Narroschke ,  Thomas Wedi ,  Semih Esenlik

IPC分类号： H04N19/11 ,  H04N19/80 ,  H04N19/14 ,  H04N19/176 ,  H04N19/117 ,  H04N19/82 ,  H04N19/86

摘要： The present invention relates to deblocking filtering, which may be advantageously applied for block-wise encoding and decoding of image or video signal. In particular, the present invention relates to performing an efficient and accurate decision on whether or not to apply deblocking filtering on an image block. The efficient and accurate decision is achieved by performing individual decisions on whether or not to apply deblocking filtering for segments of a boundary between adjacent image blocks, wherein the individual decision are based on pixels comprised in a subset of the pixel lines that the image blocks are composed of.

公开(公告)号：US10148956B2

公开(公告)日：2018-12-04

申请号：US15966328

申请日：2018-04-30

申请人： Sun Patent Trust

发明人： Matthias Narroschke ,  Hisao Sasai

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

摘要： 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：US09973772B2

公开(公告)日：2018-05-15

申请号：US14867321

申请日：2015-09-28

申请人： SUN PATENT TRUST

发明人： Steffen Wittmann ,  Virginie Drugeon ,  Matthias Narroschke ,  Thomas Wedi

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

CPC分类号： H04N19/50 ,  H04N19/00763 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/593 ,  H04N19/80 ,  H04N19/82

摘要： 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：US09961371B2

公开(公告)日：2018-05-01

申请号：US15010546

申请日：2016-01-29

申请人： SUN PATENT TRUST

发明人： Matthias Narroschke ,  Thomas Wedi

IPC分类号： H04N19/82 ,  H04N19/61 ,  H04N19/86 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/117

CPC分类号： H04N19/61 ,  H04N19/117 ,  H04N19/139 ,  H04N19/159 ,  H04N19/176 ,  H04N19/82 ,  H04N19/86

摘要： An image processing method of performing filtering on image blocks using a plurality of deblocking filters having different filter strengths includes: a first parameter calculating step of calculating a first parameter indicating a boundary strength; a second parameter calculating step of calculating a second parameter indicating a limit value for each of the deblocking filters, based on the first parameter and a quantization parameter; and a selecting step of selecting a deblocking filter to be used in the filtering from among the deblocking filters, using one or more threshold values which are determined based on the second parameter.