公开(公告)号：US10515092B2

公开(公告)日：2019-12-24

申请号：US15656485

申请日：2017-07-21

Applicant: Google LLC

Inventor： Marcin Kowalczyk ,  Robert Obryk ,  Jyrki Alakuijala ,  Alkis Evlogimenos ,  Jan Wassenberg ,  Tomas Dzetkulic

IPC: G06F17/30 ,  G06F16/25 ,  G06F16/22

Abstract: This technology relates to encoding data. For example, a sequence of one or more structured records as input data, at least one of the structured records including one or more field tags and associated field data. The input data may be parsed into data buffers, each data buffer corresponding to a field tag in the one or more field tags, wherein each data buffer includes the associated field data of the corresponding field tag. A control sequence specifying a sequence of the one or more fields tags may be encoded into a transition record. A state machine comprising nodes and transitions may be generated, with each node corresponding to occurrences of the one or more field tags and each transition corresponding to successive pairs of the one or more field tags. The data buffers, a representation of the state machine, and the encoded control sequence may be output.

公开(公告)号：US20190320173A1

公开(公告)日：2019-10-17

申请号：US15952300

申请日：2018-04-13

Applicant: GOOGLE LLC

Inventor： Jyrki Alakuijala ,  Jan Wassenberg

IPC: H04N19/124 ,  H04N19/70 ,  H04N19/172 ,  H04N19/80 ,  H04N19/44

Abstract: A spatially adaptive quantization-aware deblocking filter is used for encoding or decoding video or image frames. The deblocking filter receives a reconstructed frame produced based on dequantized and inverse transformed coefficients of a video frame or an image frame. The reconstructed frame is filtered according to adaptive quantization field data for the video or image frame. The adaptive quantization field data represents weights applied to quantization values used at different areas of the video or image frame. A number of blocking artifacts remaining within the resulting filtered frame is determined. The adaptive quantization field data is then adjusted based on that number of blocking artifacts. The filtered frame is then filtered according to the adjusted adaptive quantization field data. The resulting re-filtered frame is then output to an output source, such as for transmission, display, storage, or further processing.