公开(公告)号：EP4441996A1

公开(公告)日：2024-10-09

申请号：EP22821715.4

申请日：2022-10-28

申请人： QUALCOMM INCORPORATED

发明人： LE, Hoang Cong Minh ,  POURREZA, Reza ,  YANG, Yang ,  ZHU, Yinhao ,  SAID, Amir ,  COHEN, Taco Sebastiaan

IPC分类号： H04N19/105 ,  H04N19/136 ,  H04N19/172 ,  H04N19/537

CPC分类号： H04N19/537 ,  H04N19/105 ,  H04N19/136 ,  H04N19/172

公开(公告)号：EP4018653B1

公开(公告)日：2024-09-18

申请号：EP20768168.5

申请日：2020-08-21

IPC分类号： H04N19/119 ,  H04N19/154 ,  H04N19/176 ,  H04N19/51 ,  H04N19/537 ,  H04N19/567 ,  H04N19/70

CPC分类号： H04N19/119 ,  H04N19/154 ,  H04N19/176 ,  H04N19/51 ,  H04N19/537 ,  H04N19/567 ,  H04N19/70

公开(公告)号：EP3937496B1

公开(公告)日：2024-07-17

申请号：EP20770155.8

申请日：2020-03-06

IPC分类号： H04N19/52 ,  H04N19/537 ,  H04N19/70

CPC分类号： H04N19/52 ,  H04N19/70 ,  H04N19/537

公开(公告)号：EP3177015A4

公开(公告)日：2017-08-09

申请号：EP15855692

申请日：2015-04-23

申请人： HUAWEI TECH CO LTD

发明人： CHEN HUANBANG ,  LIN SIXIN ,  LIANG FAN

IPC分类号： H04N19/119 ,  H04N19/103 ,  H04N19/147 ,  H04N19/176 ,  H04N19/182 ,  H04N19/537 ,  H04N19/567

CPC分类号： H04N19/51 ,  H04N19/103 ,  H04N19/105 ,  H04N19/147 ,  H04N19/172 ,  H04N19/176 ,  H04N19/182 ,  H04N19/537 ,  H04N19/567

摘要： A picture prediction method and a related apparatus are disclosed. A picture prediction method includes: determining K1 pixel samples in a picture block x, and determining a candidate motion information unit set corresponding to each pixel sample in the K1 pixel samples, where the candidate motion information unit set corresponding to each pixel sample includes at least one candidate motion information unit; determining a merged motion information unit set i including K1 motion information units, where each motion information unit in the merged motion information unit set i is selected from at least a part of motion information units in candidate motion information unit sets corresponding to different pixel samples in the K1 pixel samples; and predicting a pixel value of the picture block x by using a non-translational motion model and the merged motion information unit set i. This application helps reduce computational complexity of picture prediction performed based on the non-translational motion model.

摘要翻译： 公开了一种图片预测方法和相关装置。 一种图片预测方法，包括：确定图片块x中的K1个像素样本，并确定与所述K1个像素样本中的每个像素样本对应的候选运动信息单元集合，其中，与每个像素样本对应的候选运动信息单元集合至少包括 一个候选运动信息单元; 确定包括K1个运动信息单元的合并运动信息单元集合i，其中合并运动信息单元集合i中的每个运动信息单元是从对应于不同像素样本的候选运动信息单元集合中的​​至少一部分运动信息单元中选择的; K1像素采样; 并且通过使用非平移运动模型和合并运动信息单元集合i来预测图片块x的像素值。 该应用有助于降低基于非平移运动模型执行的图像预测的计算复杂度。

公开(公告)号：EP3167613A1

公开(公告)日：2017-05-17

申请号：EP15822225.7

申请日：2015-07-15

申请人： MediaTek Singapore Pte. Ltd.

发明人： HUANG, Han

IPC分类号： H04N19/176

CPC分类号： H04N19/513 ,  H04N19/46 ,  H04N19/52 ,  H04N19/527 ,  H04N19/537 ,  H04N19/70 ,  H04N19/96

摘要： A method and apparatus for deriving a sub-block motion vector for the current sub-block based on a motion-model function depending on the current sub-block location are disclosed. The derived sub-block motion vector is then used for encoding or decoding the sub-block. The motion-model function may correspond to an affine motion-model function or a bilinear motion-model function. In one embodiment, a new Merge mode can be used to apply prediction of a current block by applying prediction on the sub-block basis using the sub-block motion vector derived from the motion-model function. In another embodiment, an additional inter prediction mode can be used to apply prediction of a current block by applying prediction on the sub-block basis using the sub-block motion vector derived from the motion-model function.

摘要翻译： 公开了一种用于基于取决于当前子块位置的运动模型函数来导出当前子块的子块运动向量的方法和装置。 然后将导出的子块运动矢量用于对子块进行编码或解码。 运动模型函数可以对应于仿射运动模型函数或双线性运动模型函数。 在一个实施例中，可以使用新的合并模式通过使用从运动模型函数导出的子块运动矢量对子块应用预测来应用当前块的预测。 在另一个实施例中，可以使用附加帧间预测模式通过使用从运动模型函数导出的子块运动矢量在子块基础上应用预测来应用当前块的预测。

公开(公告)号：EP2954490A1

公开(公告)日：2015-12-16

申请号：EP14702296.6

申请日：2014-02-04

申请人： Thomson Licensing

发明人： CONZE, Pierre-Henri ,  ROBERT, Philippe ,  CRIVELLI, Tomas ,  MORIN, Luce

IPC分类号： G06T7/20

CPC分类号： G06T7/2033 ,  G06T7/246 ,  G06T2207/10016 ,  G06T2207/20016 ,  G06T2207/20032 ,  G06T2207/30241 ,  H04N19/52 ,  H04N19/537 ,  H04N19/56 ,  H04N19/577 ,  H04N19/58

摘要： The invention relates to a method for generating a motion field between a current frame and a reference frame belonging to a video sequence from an input set of motion fields. An motion field is associated to an ordered pair of frames comprises for a group of pixels belonging to a first frame of the ordered pair of frames, a motion vector computed from a location of the pixel in the first frame to an endpoint in a second frame of the ordered pair of frames. The method comprises a step for determining a plurality of motion paths from a current frame to a reference frame wherein a motion path comprises a sequence of N ordered pairs of frames associated to the input set of motion fields and wherein a first frame of an ordered pair corresponds to a second frame of the previous ordered pair in the sequence; the first image of the first ordered pair is the current frame; the second frame of the last ordered pair is the reference frame; and N is an integer. The method then comprises a step for determining, for the group of pixels belonging to the current frame, a plurality of candidate motion vectors from the current frame to the reference frame wherein a candidate motion vector is the result of a sum of motion vectors; each motion vector belonging to a motion field associated to an ordered pair of frames according to a determined motion path. And the method then comprises a step for selecting, for the group of pixels belonging to the current frame, a candidate motion vector among the plurality of candidate motion vectors.

摘要翻译： 公开了一种从输入的运动场组合产生属于视频序列的当前帧与参考帧之间的运动场的方法。 运动场与有序的帧对相关联，包括属于有序对帧的第一帧的一组像素，从第一帧中的像素的位置到第二帧中的端点计算的运动矢量 的有序对框架。 该方法包括确定从当前帧到参考帧的多个运动路径，其中运动路径包括与运动场的输入集合相关联的N个有序对帧对的随机序列; N是整数。 该方法包括：对于属于当前帧的像素组，确定从当前帧到参考帧的多个候选运动矢量，其中候选运动矢量是运动矢量之和的结果; 每个运动矢量属于根据确定的运动路径与有序对帧对相关联的运动场。 然后，该方法包括为属于当前帧的像素组选择多个候选运动矢量中的运动矢量。

公开(公告)号：EP2627089A3

公开(公告)日：2013-08-21

申请号：EP13166271.0

申请日：2003-04-22

申请人： Sony Corporation

发明人： Sato, Kazushi ,  Suzuki, Teruhiko ,  Sunohara, Osamu ,  Yagasaki, Yoichi

IPC分类号： H04N7/26 ,  H03M7/40

CPC分类号： H04N19/52 ,  H03M7/4006 ,  H04N19/13 ,  H04N19/16 ,  H04N19/176 ,  H04N19/513 ,  H04N19/537

摘要： The present invention relates to, for example, an encoding apparatus and an encoding method, a decoding apparatus and a decoding method, a recording medium, and a program suitable for encoding image signals with a higher compression ratio for transmission or accumulation. In an arithmetic coding section (5 8), from among the syntax elements of input image compression information, the frame/field flag is first encoded by a frame/field flag context model (91). When the macroblock to be processed is subjected to frame-based encoding, a frame-based context model (92), specified in the current H.26L standard, is applied. On the other hand, when the macroblock to be processed is subjected to field-based encoding, a field-based context model (94) is applied for the syntax elements described below. The present invention is applied to an encoder for encoding image information and a decoder for decoding image information.

公开(公告)号：EP2624461A3

公开(公告)日：2013-08-21

申请号：EP13164839.6

申请日：2003-04-22

申请人： Sony Corporation

发明人： Sato, Kazushi ,  Suzuki, Teruhiko ,  Sunohara, Osamu ,  Yagasaki, Yoichi

IPC分类号： H03M7/40 ,  H04N7/26

CPC分类号： H04N19/52 ,  H03M7/4006 ,  H04N19/13 ,  H04N19/16 ,  H04N19/176 ,  H04N19/513 ,  H04N19/537

摘要： The present invention relates to, for example, an encoding apparatus and an encoding method, a decoding apparatus and a decoding method, a recording medium, and a program suitable for encoding image signals with a higher compression ratio for transmission or accumulation. In an arithmetic coding section (58), from among the syntax elements of input image compression information, the frame/field flag is first encoded by a frame/field flag context model (91). When the macroblock to be processed is subjected to frame-based encoding, a frame-based context model (92), specified in the current H.26L standard, is applied. On the other hand, when the macroblock to be processed is subjected to field-based encoding, a field-based context model (94) is applied for the syntax elements described below. The present invention is applied to an encoder for encoding image information and a decoder for decoding image information.

公开(公告)号：EP2552115A1

公开(公告)日：2013-01-30

申请号：EP12153221.2

申请日：2012-01-31

申请人： Siemens Aktiengesellschaft ,  Friedrich-Alexander-Universität

发明人： Weinlich, Andreas ,  Amon, Peter ,  Hutter, Andreas ,  Kaup, André

IPC分类号： H04N7/26 ,  G06T7/20

CPC分类号： H04N19/513 ,  H04N19/13 ,  H04N19/182 ,  H04N19/51 ,  H04N19/517 ,  H04N19/53 ,  H04N19/537 ,  H04N19/577 ,  H04N19/61 ,  H04N19/615 ,  H04N19/63

摘要： The invention refers to a method for coding a sequence of digital images (S), each image having the same image format and comprising a number of pixels with assigned pixel values, wherein motion parameters (MP) between first and second images (I1, 12) are determined, where based on said motion parameters (MP) a motion compensation (MC) is performed for coding the sequence of images (S), where said motion parameters (MP) are included in the coded sequence of images (CS). The motion parameters (MP) between a first image (I1) and a second image (12) comprise a scalar field ( p̂ ) having scalar values for a plurality of image positions in the image format, wherein the scalar field ( p̂ ) is determined such that gradient vectors (MV) derived from the scalar field ( p̂ ) correspond to motion vectors for the motion compensation (MC).

摘要翻译： 本发明涉及一种用于编码数字图像序列（S）的方法，每个图像具有相同的图像格式并且包括具有分配的像素值的多个像素，其中第一和第二图像（I1,12）之间的运动参数（MP） ），其中基于所述运动参数（MP），执行运动补偿（MC）以对图像序列（S）进行编码，其中所述运动参数（MP）包括在图像编码序列（CS）中。 第一图像（I1）和第二图像（12）之间的运动参数（MP）包括具有图像格式中的多个图像位置的标量值的标量场（p），其中确定标量场（p） 使得从标量场（p）导出的梯度矢量（MV）对应于运动补偿（MC）的运动矢量。

公开(公告)号：EP2475175A3

公开(公告)日：2012-11-07

申请号：EP11192765.3

申请日：2006-07-05

申请人： NTT DoCoMo, Inc.

发明人： Suzuki, Yoshinori ,  Boon, Choong Seng ,  Kobayashi, Mitsuru

IPC分类号： H04N7/32 ,  H04N7/26

CPC分类号： H04N19/573 ,  H04N19/537 ,  H04N19/587 ,  H04N19/593 ,  H04N19/61

摘要： The present invention enables an efficient encoding of video data in which a prediction signal can be determined without using a motion vector.
A video encoding device 100 comprises a region division section 101 for dividing a frame image constituting video data into a plurality of regions as encoding target regions, an encoding section 104 for encoding an image of each region, an inverse transformation section 105 and an addition section 106 for generating reproduced image of the encoded image, a storage section 107 for storing reproduced images, a prediction generation section 108 for searching a region which is highly correlated to a reproduced image of a template region, which is adjacent to the region of the encoding target image in a predetermined positional relationship and is a part of the reproduced image, from the reproduced image, and determining a prediction signal based on the searched region and the above-mentioned positional relationship, and a subtraction section 102 for generating a difference signal between the prediction signal and the encoding target image as a signal for encoding.