Loop restoration filtering for super resolution video coding

    公开(公告)号:US11445220B2

    公开(公告)日:2022-09-13

    申请号:US16901910

    申请日:2020-06-15

    Abstract: Techniques related to selecting restoration filter coefficients for 2-dimensional loop restoration filters for super resolution video coding are discussed. Such techniques include upscaling reconstructed video frames along only a first dimension and selecting filter coefficients for portions of the frame by an evaluation that, for each pixel of the portion, uses only pixel values that are aligned with the first dimension. Selection of filter coefficients for the second dimension may be skipped or made using only a subset of available filter coefficients.

    SWITCHABLE CHROMA SAMPLING FOR WIRELESS DISPLAY

    公开(公告)号:US20200374532A1

    公开(公告)日:2020-11-26

    申请号:US16920046

    申请日:2020-07-02

    Abstract: Methods, apparatuses and systems may provide for a video transmitter that generates a primary bitstream based on a video signal, wherein the primary bitstream is encoded with subsampled chroma information, and detects a static condition with respect to the video signal. Additionally, a plurality of auxiliary bitstreams may be generated, in response to the static condition, based on the video signal. Each of the plurality of auxiliary bitstreams may be encoded with full resolution chroma information. In one example, a video receiver may detect that the auxiliary bitstreams are associated with the primary bitstream, decode the primary bitstream and the plurality of auxiliary bitstreams to obtain luma information and the full resolution chroma information, and multiplex the luma information with the full resolution chroma information.

    Point-based rendering and removal of projection noise

    公开(公告)号:US10762592B2

    公开(公告)日:2020-09-01

    申请号:US16050595

    申请日:2018-07-31

    Abstract: Embodiments described herein provide an apparatus comprising a processor to divide a first projection into a plurality of regions, the plurality of regions comprising a plurality of pixels, detect errant visual content in a first region in the plurality of regions, determine a detail frequency rating for the first region, and apply one of a first rendering technique to the first region in the plurality of regions when the detail frequency rating for the first region in the plurality of regions fails to meet a detail frequency threshold or a second rendering technique to the first region in the plurality of regions when the detail frequency rating for the first region in the plurality of regions meets a detail frequency threshold. Other embodiments may be described and claimed.

    HUMAN VISUAL SYSTEM ADAPTIVE VIDEO CODING
    49.
    发明申请

    公开(公告)号:US20200267396A1

    公开(公告)日:2020-08-20

    申请号:US16869053

    申请日:2020-05-07

    Abstract: An example apparatus for encoding video frames includes a mask selector to select a subset of visual masks according to an actual target compression ratio and GOP configuration and a complexity estimator to estimate a picture level spatial/temporal complexity for a current frame. The example apparatus further includes a GOP adaptive visual mask selector to specify a visual mask from the subset of the visual masks corresponding to the estimated spatial and temporal complexity value a good enough picture QP deriver to derive a good enough picture QP value using the visual mask. The example apparatus also includes an adjustor to adjust the good enough picture QP value based on block level human visual system sensitivity and statistics of already encoded frames to obtain a final human visual system QP map.

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