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    Adaptive bit rate control for image compression
    2.
    发明授权
    Adaptive bit rate control for image compression 有权

    公开(公告)号：US10785485B1

    公开(公告)日：2020-09-22

    申请号：US15143069

    申请日：2016-04-29

    Applicant: Matrox Graphics Inc.

    Inventor： Mathieu Girard ,  Nicolas Jean ,  Alain Champenois ,  Jean-Jacques Ostiguy ,  Sergiu Bogdan Nicolescu

    IPC: H04N19/146 ,  H04N19/196 ,  H04N19/177 ,  H04N19/124

    Abstract: A method and apparatus for enabling compression of a stream of pictures according to a target bit rate are described. A first configuration parameter for a first portion is determined based at least in part on a first relative weight of the first portion with respect to a first set of N portions, where the first set of N portions includes the first portion and N-1 portions which succeed the first portion. A second configuration parameter for a second portion of a second picture is determined based at least in part on a second relative weight of the second portion with respect to a second set of M portions of pictures, where the second set of M portions includes a subset of the N-1 portions from the first set and zero or more additional portions of pictures from the stream of pictures.

    Parallel compression of image data in a compression device
    3.
    发明授权
    Parallel compression of image data in a compression device 有权

    公开(公告)号：US10171825B1

    公开(公告)日：2019-01-01

    申请号：US15140380

    申请日：2016-04-27

    Applicant: Matrox Graphics Inc.

    Inventor： Nicolas Jean ,  Mathieu Girard ,  Jean-Jacques Ostiguy

    IPC: H04N19/436 ,  H04N19/146 ,  H04N19/196 ,  H04N19/172 ,  H04N19/80 ,  H04N19/12

    Abstract: Method and apparatus of compressing a stream of pictures in parallel in a compression device, where the compression device includes at least a first and a second component, are described. A first portion of a first picture of a stream of pictures is processed in the first component of the compression device, while a second portion of a second picture of the stream of pictures is simultaneously processed in the second component of the compression device according to partial compression statistics associated with the second picture, where the partial compression statistics result from the processing of the second picture in the compression device when compression of the second picture is not yet completed.

    Bit rate control for data compression
    8.
    发明授权
    Bit rate control for data compression 有权
    数据压缩的比特率控制

    公开(公告)号：US09047669B1

    公开(公告)日：2015-06-02

    申请号：US13623557

    申请日：2012-09-20

    Applicant: MATROX GRAPHICS INC.

    Inventor： Jean-Jacques Ostiguy ,  Nicolas Jean ,  Simon Garneau ,  Alain Champenois ,  Mathieu Girard

    IPC: G06K9/36 ,  G06K9/46 ,  G06T9/00

    CPC classification number: G06T9/005 ,  H04N19/124 ,  H04N19/149 ,  H04N19/174

    Abstract: There is described herein a method and system for dynamically controlling the bit rate of a codec during image data compression by analyzing information output by a first module that processes the group of macroblocks as part of the compression scheme, and configuring a second module to process the group of macroblocks according to this analysis.

    Abstract translation: 这里描述了一种用于在图像数据压缩期间通过分析处理作为压缩方案的一部分的宏块组处理的第一模块输出的信息来动态地控制编解码器的比特率的方法和系统，以及配置第二模块来处理 根据这个分析的一组宏块。

    Method, system and apparatus for managing multiple input stream requests for a single network stream
    9.
    发明授权
    Method, system and apparatus for managing multiple input stream requests for a single network stream 有权

    公开(公告)号：US12218998B1

    公开(公告)日：2025-02-04

    申请号：US17553447

    申请日：2021-12-16

    Applicant: Matrox Graphics Inc.

    Inventor： Jean-Jacques Ostiguy ,  Charles-Michel Barry

    IPC: H04L65/612 ,  G06F9/50 ,  H04L65/1069

    Abstract: A method for managing requests for input streams associated with at least one incoming network stream received from a network interface. The input streams include at least one of video data, audio data and ancillary data. The method includes receiving a request for an input stream associated with a network stream identifier and determining whether the network stream identifier associated with the input stream matches an existing network stream identifier, the existing network stream identifier associated with at least one existing input stream. The method further includes: if a match is found, associating the input stream and the at least one existing input stream with a common area of memory; and if a match is not found, associating the input stream with a first area of memory that differs from a second area of memory that is associated with the at least one existing input stream.

    Motion-based adaptive quantization
    10.
    发明授权
    Motion-based adaptive quantization 有权

    公开(公告)号：US10003802B1

    公开(公告)日：2018-06-19

    申请号：US15412808

    申请日：2017-01-23

    Applicant: MATROX GRAPHICS INC.

    Inventor： Jean-Jacques Ostiguy ,  Simon Garneau ,  Bernard Antaki ,  Alain Champenois ,  Mathieu Girard ,  Nicolas Jean

    IPC: H04N11/02 ,  H04N19/124 ,  H04N19/177 ,  H04N19/51

    CPC classification number: H04N19/124 ,  H04N19/137 ,  H04N19/176 ,  H04N19/177 ,  H04N19/51

    Abstract: A method and apparatus for compressing a data stream comprising a plurality of pictures are described. A first quantization parameter (QP) from a plurality of QPs is determined, for a static region in a current picture. The plurality of QPs change in accordance with a multi-step change from a start QP to a target QP and each one of the plurality of QPs is to be applied to a respective one from successive static regions in successive pictures. In response to determining, based upon statistics on static region(s) in the current picture which are associated with the first QP, that the first QP is selected, compression of the static region is caused based upon the first QP, and in response to determining that the first QP is not selected, compression of the static region is caused based upon a second QP that is greater than the first QP.

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