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公开(公告)号：US11475600B2
公开(公告)日：2022-10-18
申请号：US16629145
申请日：2018-07-10
申请人： intoPIX s.a.
IPC分类号： G06K9/36 , G06T9/00 , H04N19/13 , H04N19/159 , H04N19/182 , H04N19/64 , G06T3/40
摘要： The invention relates to a method for compressing an input data set, wherein the coefficients in the input data set are grouped in groups of coefficients, a number of bit planes, GCLI, needed for representing each group is determined, a quantization is applied, keeping a limited number of bit planes, a prediction mechanism is applied to the GCLIs for obtaining residues, and an entropy encoding of the residues is performed. The entropy-encoded residues, and the bit planes kept allow the decoder to reconstruct the quantized data, at a minimal cost in meta-data.
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公开(公告)号：US10194219B2
公开(公告)日：2019-01-29
申请号：US15281434
申请日：2016-09-30
申请人： intoPIX s.a.
发明人： Charles Daniel Buysschaert , Thomas Denison , Sébastien Lugan , Gaël Rouvroy , Pascal Hubert Pellegrin
IPC分类号： H04N21/854 , H04N21/6336 , H04N21/6379 , H04N21/2343 , H04N21/236 , H04N21/434
摘要： The invention provides a method for mapping a data stream onto an SDI channel, said data stream comprising a sequence of m-bit words, a range of values from 0 to 2**n−1 and from 2**m−2**n to 2**m−1 being excluded values on said SDI channel. The method comprises the steps of grouping the words to be transmitted, detecting if at least one of the words of the group contains a number of MSB's equal to one, and then recoding these MSBs and adding a constant, in order that no excluded values are obtained. Supplementary bits signal groups that have been recoded.
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公开(公告)号：US10212421B2
公开(公告)日：2019-02-19
申请号：US15394879
申请日：2016-12-30
申请人： intoPIX s.a.
发明人： Valentin Dessy , Pascal Hubert Pellegrin , Thomas Denison , Charles Daniel Buysschaert , Gael Rouvroy , Gauthier Crucifix , Tanguy Gilmont
IPC分类号： G06K9/36 , H04N19/124 , H04N19/132 , H04N19/146 , H04N19/18 , H04N19/184 , H04N19/645 , H04N19/12 , H04N19/137 , H04N19/423 , H04N19/44 , H04N19/91
摘要： The invention provides a method and device for compressing a sequence of signed coefficients wherein coefficients are grouped, for each group, the greatest coded line index (GCLI) is determined, a quantization level t is applied and only the GCLI-t lowest weight bits of the coefficients are copied into the output stream together with the value of the GCLI. According to the invention, sign bits are not coded for coefficient having a zero quantized value. The invention also provides a method for determining a data budget required for compressing a sequence of signed coefficients, in dependence of a quantization level, and a method for compressing an image within the limits of a given data budget constraint. The invention provides a compressed data set coding an image in an efficient way.
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公开(公告)号：US20180192051A1
公开(公告)日：2018-07-05
申请号：US15394879
申请日：2016-12-30
申请人： intoPIX s.a.
发明人： Valentin Dessy , Pascal Hubert Pellegrin , Thomas Denison , Charles Daniel Buysschaert , Gael Rouvroy , Gauthier Crucifix , Tanguy Gilmont
IPC分类号： H04N19/124 , H04N19/184 , H04N19/12 , H04N19/91 , H04N19/137 , H04N19/423 , H04N19/44
CPC分类号： H04N19/124 , H04N19/12 , H04N19/132 , H04N19/137 , H04N19/146 , H04N19/18 , H04N19/184 , H04N19/423 , H04N19/44 , H04N19/645 , H04N19/91
摘要： The invention provides a method and device for compressing a sequence of signed coefficients wherein coefficients are grouped, for each group, the greatest coded line index (GCLI) is determined, a quantization level t is applied and only the GCLI-t lowest weight bits of the coefficients are copied into the output stream together with the value of the GCLI. According to the invention, sign bits are not coded for coefficient having a zero quantized value. The invention also provides a method for determining a data budget required for compressing a sequence of signed coefficients, in dependence of a quantization level, and a method for compressing an image within the limits of a given data budget constraint. The invention provides a compressed data set coding an image in an efficient way.
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公开(公告)号：US20170094374A1
公开(公告)日：2017-03-30
申请号：US15281434
申请日：2016-09-30
申请人： intoPIX s.a.
发明人： Charles Daniel Buysschaert , Thomas Denison , Sébastien Lugan , Gaël Rouvroy , Pascal Hubert Pellegrin
IPC分类号： H04N21/854 , H04N21/6336 , H04N21/6379
CPC分类号： H04N21/85406 , H04N21/2343 , H04N21/23602 , H04N21/4342 , H04N21/6336 , H04N21/6379
摘要： The invention provides a method for mapping a data stream onto an SDI channel, said data stream comprising a sequence of m-bit words, a range of values from 0 to 2**n−1 and from 2**m−2**n to 2**m−1 being excluded values on said SDI channel. The method comprises the steps of grouping the words to be transmitted, detecting if at least one of the words of the group contains a number of MSB's equal to one, and then recoding these MSBs and adding a constant, in order that no excluded values are obtained. Supplementary bits signal groups that have been recoded.
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