Nvidia Corporation

Casco Signal Ltd.

Casco Signal Co., Ltd.

Telefonaktiebolaget Lm Ericsson (Publ)

Sabic Global Technologies B.v.

Shpp Global Technologies B.v.

Shanghai Wingtech Electronics Technology Co., Ltd.

Wei Feng

Jian Li

Jing Yang

Li Yang

Tong Wu

Jing Chen

Dong Zhang

Yuan Zhou

Xiaoyong Wang

Hongxia Long

Geert Boven

Jianjun Chen

Adel Fawzy Bastawros

Xi He

Zhe Chen

Yuzhen Xu

Yuxian An

Yongmao Tang

Yonghai Wu

Zejun Hu

Yanyang Xing

Sangeun Han

Ranga Ramanujam Srinivasan

Liang Pan

Haigui Xu

Chuntao Tang

Yiran Lu

Mahari Tjahjadi

Junan Chen

Chun Feng Yang

Zhichun Ma

Mingkai Long

Hengjie Lai

Various embodiments include techniques for performing hardware-assisted motion estimation when encoding blocks of a media frame. A video encoder generates motion vector hints for multiple phases of motion estimation at increasingly finer resolutions until the final motion estimation phase at the full resolution of the media frame. The video encoder divides the media frame into a grid of grid blocks, where the grid blocks are smaller than the standard encoding block size of the media frame. At each phase, the video encoder generates one motion vector hint for each grid block at the selected resolution for that phase. For each motion vector hint, the video encoder generates forward prediction hint data based on a reference media frame previous to the current media frame. Further, for each motion vector hint, the video encoder generates backward prediction hint data based on a reference media frame that follows the current media frame.

Hints selection for hardware-based pyramidal motion estimation search

An urban rail transportation fusion signaling system and method. The fusion signaling system includes: an autonomous train supervision system, configured to send a train operation plan; a first wayside management system, operating under a Train Autonomous Circumambulate System (TACS) system and configured to generate line resource allocation information according to the train operation plan; a second wayside management system, operating under a Communications-Based Train Control (CBTC) system and configured to generate operation permission information according to the train operation plan; and a car controller, provided on a rail transportation train and configured to: perform traffic control according to the line resource allocation information when the train is traveling under the TACS system; or perform traffic control according the operation permission information when the train is traveling under the CBTC system.

Urban rail transportation fusion signaling system and application method thereof

Disclosed are systems and techniques for efficient real-time codec encoding of video files. In one embodiments, the techniques include receiving one or more intra-prediction modes, each having a corresponding cost; calculating a first cost of a chroma-from-luma intra-prediction mode; calculating a second cost of the chroma-from-luma intra-prediction mode; and calculating a final cost based on the first cost and the second cost. The techniques also include selecting a final intra-prediction mode; generating, based on the selected final intra-prediction mode, a block of predicted pixels that approximates a block of source pixels of an image frame; and encoding a first alpha value in a bitstream.

Chroma-from-luma mode selection for high-performance video encoding

Disclosed are systems and techniques for efficient real-time codec encoding of video files. In one embodiment, the techniques include obtaining a first plurality of motion vectors of a first resolution, generating a second plurality of motion vectors of a second resolution, and calculating a first cost of the motion vector using a first cost function of a first size. The techniques include selecting a subset of motion vectors of the second plurality of motion vectors, calculating a second cost using a second cost function of a second size, and generating a plurality of combined motion vectors based on the subset of motion vectors. The techniques include calculating a third cost using the second cost function of the second size, selecting a final motion vector, and generating, based on the selected final motion vector, a block of predicted pixels that approximates a block of source pixels of an image frame.

Efficient sub-pixel motion vector search for high-performance video encoding

Disclosed are techniques for compressing data of an image using multiple processing cores. The techniques include obtaining, using a first (second, etc.) processing core, a first (second, etc.) plurality of reconstructed blocks approximating source pixels of a first (second, etc.) portion of an image and filtering, using the first processing core, the first plurality of reconstructed blocks. The filtering includes enabling application of one or more filters to a first plurality of regions that include pixels of the first plurality of reconstructed blocks but not pixels of the second plurality of reconstructed blocks. The filtering further includes disabling application of the one or more filters to a second plurality of regions that include pixels of the first plurality of reconstructed blocks and pixels of the second plurality of reconstructed blocks.

Parallel encoding of video frames without filtering dependency

Disclosed are apparatuses, systems, and techniques for real-time codec encoding of video files using hardware-assisted accelerators that utilize a combination of parallel and sequential processing, in which at least a part of intra-frame block prediction is performed with parallel processing.

Hardware codec accelerators for high-performance video encoding

The present disclosure relates to a train autonomous control system (TACS) based method for train interval protection control, and an apparatus for the method. The method includes: step one: receiving, by a carborne controller (CC), a train operation command sent by an automatic train supervision (ATS) system to obtain a movement mission; step two: calculating, by the CC, a train guaranteed zone in real time according to information of train localization, car characteristics, and carborne controller characteristics; step three: calculating, by the CC, track resources required to be used in combination with current mission information according to the train guaranteed zone, and requesting to a wayside information control (WSIC) for information of collided trains occupying these track resources; and step four: sending, by the WSIC, a list of the collided trains on the track resources required to be used to the CC according to information of the track resources required to be occupied by a train on a whole line. Compared to the prior art, the present disclosure has the advantages of high operation efficiency, communication resource saving, reliability, safety, etc.

TACS based method for train interval protection control, and apparatus for method

Disclosed are techniques for compressing data of an image. Intermediate pixels may be determined. Each location of the image may be associated with a block of a plurality of blocks of a first size and a block of a plurality of blocks of a second size. For each block of the first size and of the second size, a first cost for a first mode and a second cost for a second mode may be determined in parallel using the intermediate pixels. A final mode and a final block size may be selected for each location of the image using the first cost and the second cost for each of a respective block of the first size and a respective block of the second size associated with a corresponding location. Final pixels may be determined, and a representation of the image may be obtained based on the final pixels.

Parallel processing of video frames during video encoding

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Shanghai, China

Wei Feng