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.

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.

公开(公告)号：US11805261B1

公开(公告)日：2023-10-31

申请号：US17025695

申请日：2020-09-18

Applicant: Matrox Graphics Inc.

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

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

CPC classification number: H04N19/146 ,  H04N19/124 ,  H04N19/177 ,  H04N19/196

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.

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。

公开(公告)号：US10523958B1

公开(公告)日：2019-12-31

申请号：US16228625

申请日：2018-12-20

Applicant: Matrox Graphics Inc.

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

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

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.

公开(公告)号：US10360695B1

公开(公告)日：2019-07-23

申请号：US15611558

申请日：2017-06-01

Applicant: MATROX GRAPHICS INC.

Inventor： Nicolas Jean ,  Alain Champenois ,  Jean-Jacques Ostiguy ,  Mathieu Girard ,  Khalil Mawassi

IPC: G06T9/00 ,  H04N19/10 ,  H04N19/94 ,  H04N19/124 ,  H04N19/176

Abstract: A method and apparatus for enabling low latency compression of a stream of pictures are described. A first set of static regions of a current picture from the plurality of pictures is determined, where each region from the first set is static. A second set of regions of the current picture is determined, where the second set includes all regions of the current picture that are not included in the first set. Compression of the first set of regions is performed based on values of a first quantization parameter determined by a MAQ mechanism. The MAQ mechanism is operative to dynamically increase the compression quality of static regions. Compression of the second set of regions is performed based on values of a second quantization parameter determined by a rate control mechanism. The rate control mechanism is operative to compress the data stream according to a target bit rate.

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.