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公开(公告)号：US09621900B1
公开(公告)日：2017-04-11
申请号：US13670587
申请日：2012-11-07
Applicant: MATROX GRAPHICS INC.
Inventor： Jean-Jacques Ostiguy , Simon Garneau , Bernard Antaki , Alain Champenois
IPC: H04N7/32 , H04N19/136 , H04N19/61
CPC classification number: H04N19/136 , G06T1/60 , H04N19/13 , H04N19/184 , H04N19/42 , H04N19/423 , H04N19/43 , H04N19/433 , H04N19/439 , H04N19/463 , H04N19/517 , H04N19/61 , H04N19/70 , H04N19/88 , H04N19/91
Abstract: There is described herein motion-based adaptive quantization for compressing video streams. Motionless portions of pictures are detected and the compression quality of these portions is increased while the compression quality of non-motionless portions is decreased. The QP of a portion of image data, such as a macroblock, is modified for successive motionless portions from a start QP to a target QP in accordance with a multi-step change.
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Patent Agency Ranking
公开(公告)号：US08873872B1
公开(公告)日：2014-10-28
申请号：US13622785
申请日：2012-09-19
Applicant: Matrox Graphics Inc.
Inventor： Jean-Jacques Ostiguy , Simon Garneau , Oui Goi
CPC classification number: H04N19/136 , G06T1/60 , H04N19/13 , H04N19/184 , H04N19/42 , H04N19/423 , H04N19/43 , H04N19/433 , H04N19/439 , H04N19/463 , H04N19/517 , H04N19/61 , H04N19/70 , H04N19/88 , H04N19/91
Abstract: There is described an image compressing/decompressing method and device that provides the lossless data compression/decompression scheme in two separate modules. Partially entropy encoded/decoded data is written to memory by a first module after a first part of the process and retrieved by a second module to perform the second part of the lossless compression/decompression scheme.
Abstract translation: 描述了在两个单独的模块中提供无损数据压缩/解压缩方案的图像压缩/解压缩方法和装置。 部分熵编码/解码数据在第一部分处理之后由第一模块写入存储器，并由第二模块检索以执行无损压缩/解压缩方案的第二部分。
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公开(公告)号：US10003803B1
公开(公告)日：2018-06-19
申请号：US15412818
申请日：2017-01-23
Applicant: MATROX GRAPHICS INC.
Inventor： Jean-Jacques Ostiguy , Simon Garneau , Bernard Antaki , Alain Champenois , Khalil Mawassi , Nicolas Jean
IPC: H04N11/02 , H04N19/124 , H04N19/172 , H04N19/51
CPC classification number: H04N19/124 , H04N19/137 , H04N19/172 , H04N19/176 , 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 that the static region is to be compressed based upon an inter prediction mode, compression of the static region is caused based upon the first QP; and in response to determining that the static region is to be compressed based upon an intra prediction mode, compression of the static region is caused based upon a minimum QP.
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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
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。
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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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公开(公告)号：US09191668B1
公开(公告)日：2015-11-17
申请号：US14508518
申请日：2014-10-07
Applicant: MATROX GRAPHICS INC.
Inventor： Jean-Jacques Ostiguy , Simon Garneau , Oui Goi
CPC classification number: H04N19/136 , G06T1/60 , H04N19/13 , H04N19/184 , H04N19/42 , H04N19/423 , H04N19/43 , H04N19/433 , H04N19/439 , H04N19/463 , H04N19/517 , H04N19/61 , H04N19/70 , H04N19/88 , H04N19/91
Abstract: There is described an image compressing/decompressing method and device that provides the lossless data compression/decompression scheme in two separate modules. Partially entropy encoded/decoded data is written to memory by a first module after a first part of the process and retrieved by a second module to perform the second part of the lossless compression/decompression scheme.
Abstract translation: 描述了在两个单独的模块中提供无损数据压缩/解压缩方案的图像压缩/解压缩方法和装置。 部分熵编码/解码数据在第一部分处理之后由第一模块写入存储器，并由第二模块检索以执行无损压缩/解压缩方案的第二部分。
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