Huawei Technologies Co., Limited

Robert Boschgmbh

Ntt Docomo, Inc.

Mathias Wien

Zhijie Zhao

Max Blaeser

Fabian Jaeger

Johannes Sauer

Lianhuan Xiong

Steffen Kamp

Sixin Lin

Yingjia Liu

Jiali Fu

Jacek Konieczny

Choong Seng Boon

Yoshinori Suzuki

Thiow Keng Tan

Mingyuan Yang

Sven Bauer

Peter Siepen

Achim Dahlhoff

Alexander Romanowski

Thomas Wedi

Jens-Rainer Ohm

Aleksandar Stojanovic

Jens Schneider

Claudia Mayer

An encoder is provided that comprises a partitioner and an entropy coder. The partitioner is configured to receive a current block of the frame and obtain a list of candidate geometric partitioning (GP) lines. Each of the candidate GP lines is generated based on information of one or more candidate neighbor blocks of the current block. The partitioner is further configured to determine a final GP line that partitions the current block into two segments, select a GP line from the list of GP lines to obtain a selected GP line, and generate a GP parameter for the current block. The GP parameter includes an offset information indicating an offset between the final GP line and the selected GP line. The entropy coder is configured to encode the GP parameter.

Encoder, decoder, computer program and computer program product for processing a frame of a video sequence

An apparatus, a method, and a computer program performs image coding with selective loop-filtering. That is, the loop-filters which operate on samples across discontinuous face boundaries are capable of being disabled. The loop-filter operation may be deferred until all samples across a face boundary are known. Then, the loop-filter can use the correct samples according to the 3D arrangement. This may be implemented on the coding block level or at a higher level.

Apparatus and method for picture coding with selective loop-filtering

A system for encoding and decoding a video coding block of a multi-view video signal is provided. A decoder is configured to decode a texture-depth video coding block (t, d) of a first texture frame and a first depth map associated with a first view for providing a decoded texture-depth video coding block (t, d) and the first depth map. A synthesized predicted texture-depth video coding block (t, d) of a view synthesis texture frame and a view synthesis depth map associated with a second view is generated. An inpainted synthesized predicted texture-depth video coding block is generated. Based on the impainted predicted texture-depth video block, the decoder reconstructs a texture-depth video coding block (t, d) of a second texture frame and a second depth map associated with the second view. An encoder is configured to encode the texture-depth video coding block in a manner that complements the decoding provided by the decoder.

Apparatuses and methods for encoding and decoding a video coding block of a multiview video signal

A method for encoding a video signal includes generating an extension region of a first face of a reference frame, where the extension region includes a plurality of extension samples, and a sample value of each extension sample is based on a sample value of a sample of a second face of the reference frame, determining a use of an extension region, providing, based on the use, picture level extension usage information based on the extension region, and encoding the picture level extension usage information into an encoded video signal.

Apparatus and methods for encoding and decoding a video signal

The present invention provides an encoder for encoding a frame of a video sequence and a corresponding decoder. The encoder comprises a partitioner and an entropy coder. The partitioner is configured to receive a current block of the frame and obtain a list of candidate geometric partitioning (GP) lines. Each of the candidate GP lines is generated based on information of one or more candidate neighbor blocks of the current block. The partitioner is further configured to determine a final GP line that partitions the current block into two segments, select a GP line from the list of GP lines to obtain a selected GP line, and generate a GP parameter for the current block. The GP parameter includes offset information indicating an offset between the final GP line and the selected GP line. The entropy coder is configured to encode the GP parameter.

An apparatus for decoding 3D video data is provided, the 3D video data comprising a plurality of texture frames and a plurality of associated depth maps, the apparatus comprising: a first texture decoder configured to decode a video coding block of a first texture frame associated with a first view; a first depth map decoder configured to decode a video coding block of a first depth map associated with the first texture frame; a depth map filter configured to generate an auxiliary depth map on the basis of the first depth map; a first view synthesis prediction unit configured to generate a predicted video coding block of a view synthesis predicted second texture frame associated with a second view on the basis of the video coding block of the first texture frame and the auxiliary depth map.

Devices and methods for 3D video coding

The invention relates to an encoding apparatus for processing a video signal comprising a plurality of frames dividable into video coding blocks. A first video coding block of a current frame of the video signal is partitioned into a first segment associated with a first segment motion vector relative to a first reference frame of the video signal and a second segment. The first video coding block is associated with a plurality of virtual partitions. Each virtual partition is associated with a respective subset of the plurality of video coding blocks of the current frame. Each video coding block of the respective subset neighbors the first video coding block and is associated with a motion vector.

Devices and methods for video coding using segmentation based partitioning of video coding blocks

Embodiments of the disclosure relate to an encoding apparatus and a decoding apparatus. The encoding apparatus is configured to process a video signal, the video signal comprising a plurality of frames, each frame being dividable into a plurality of video coding blocks, each video coding block comprising a plurality of pixels. The encoding apparatus comprises a partitioner configured to partition a first video coding block of the plurality of video coding blocks of a first frame of the video signal into a first segment and a second segment, wherein the first segment comprises a first set of the plurality of pixels of the first video coding block and the second segment comprises a second set of the plurality of pixels of the first video coding block.

An apparatus and a method for encoding a video signal. A segment of a reference frame and an extension region generated from another segment are used for encoding a current frame by inter-prediction. An apparatus and a method for decoding are also disclosed.

Encoding and decoding a video signal

The present disclosure provides a video encoder and a video decoder, which may both be used for partitioning a block in a current picture based on at least one partitioning predictor. The encoder and decoder are configured to select at least one reference picture and a plurality of blocks in the at least one reference picture. Further, to calculate, for each selected block, a projected location in the current picture based on a motion vector associated to the selected block in the reference picture. Then, they are configured to determine each selected block, of which the projected location spatially overlaps with the block in the current picture, to be a reference block, and generate for at least one reference block a partitioning predictor based on partitioning information associated to, for example stored in, the at least one reference picture.

Video encoder and decoder for predictive partitioning

A decoding apparatus partitions a video coding block based on coding information into two or more segments including a first segment and a second segment. The coding information comprises a first segment motion vector associated with the first segment and a second segment motion vector associated with the second segment. A co-located first segment in a first reference frame is determined based on the first segment motion vector and a co-located second segment in a second reference frame is determined based on the second segment motion vector. A predicted video coding block is generated based on the co-located first segment and the co-located second segment. A divergence measure is determined based on the first segment motion vector and the second segment motion vector and a first or second filter is applied depending on the divergence measure to the predicted video coding block.

Apparatuses and methods for encoding and decoding a video coding block of a video signal

The invention relates to a method () for coding a depth lookup table, DLT, (), the depth lookup table comprising depth value information of at least a part of a 3D picture, the method () comprising: selecting () a reference depth lookup table (); determining () a difference depth lookup table () based on a comparison between depth value information of the depth lookup table to be coded () and depth value information of the reference depth lookup table (); and coding () depth value information of the difference depth lookup table () according to a predetermined coding rule.

Method for coding a depth lookup table

The invention relates to a method () for sub-range based coding a depth lookup table (), the depth lookup table comprising depth values of a 3D video sequence, the depth values being constrained within a range (), the method comprising: partitioning () the range () into a plurality of sub-ranges, a first sub-range () comprising a first set of the depth values and a second sub-range () comprising a second set of the depth values; and coding () the depth values of each of the sub-ranges of the depth lookup table () separately according to a predetermined coding rule.

Method for sub-range based coding a depth lookup table

The disclosure relates to an apparatus for coding a bit stream representing a three-dimensional video comprising a sequence of views, wherein a depth map is associated to each view, the depth map comprising depth information of the view with respect to a position to the camera capturing the view, the apparatus comprising: a partitioner for partitioning the depth map into coding units; a determiner for determining a type of model function for each coding unit based on the depth information of the coding unit; a reducer for reducing the coding unit to a single residual value for each segment generated by model function; and a signaler for signaling the model function used and the residual value into the bitstream.

Apparatus for coding a bit stream representing a three-dimensional video

A method, an apparatus and a system for a rapid motion search applied in template matching are disclosed. The method includes: selecting motion vectors of blocks related to a current block as candidate motion vectors of the current block; after the uniqueness of a series of the candidate motion vectors of the current block is maintained, calculating the cost function of the candidate motion vectors in a corresponding template area of a reference frame, and obtaining the motion vector of the best matching template from the candidate motion vectors of the current block. In the embodiments of the present invention, there is no need to determine a large search range and no need to determine the corresponding search path template, and it is only necessary to perform a search in a smaller range.

Growing community of inventors

Aachen, Germany

Mathias Wien