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公开(公告)号：US20230362396A1
公开(公告)日：2023-11-09
申请号：US18222860
申请日：2023-07-17
IPC分类号： H04N19/44 , H04N21/438 , H04N21/235 , H04N19/573 , H04N19/30 , H04N19/176 , H04N19/50
CPC分类号： H04N19/44 , H04N21/4384 , H04N21/2358 , H04N19/573 , H04N19/30 , H04N19/176 , H04N19/50
摘要： A method for decoding a picture block is disclosed. The decoding method comprises:—decoding (10) at least one stream S_diff into decoded data and into one information for identifying a re-constructed reference picture in a decoder picture buffer;—reconstructing (12) a special reference picture from at least the identified reconstructed reference picture and from the decoded data;—reconstructing (16) the picture block from at least the special reference picture, wherein the at least the special reference picture is not displayed.
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公开(公告)号：US20230156208A1
公开(公告)日：2023-05-18
申请号：US18086554
申请日：2022-12-21
IPC分类号： H04N19/44 , H04N21/438 , H04N21/235 , H04N19/573 , H04N19/30 , H04N19/176 , H04N19/50
CPC分类号： H04N19/44 , H04N21/4384 , H04N21/2358 , H04N19/573 , H04N19/30 , H04N19/176 , H04N19/50
摘要： A method for decoding a picture block is disclosed. The decoding method comprises: —decoding (10) at least one stream S_diff into decoded data and into one information for identifying a reconstructed reference picture in a decoder picture buffer; —reconstructing (12) a special reference picture from at least the identified reconstructed reference picture and from the decoded data; —reconstructing (16) the picture block from at least the special reference picture, wherein the at least the special reference picture is not displayed.
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公开(公告)号：US11024017B2
公开(公告)日：2021-06-01
申请号：US16205505
申请日：2018-11-30
发明人： Francois Cellier , Patrick Lopez , Yannick Olivier , David Touze
摘要： A system and methods is provided for performing, by a processor, an initial tone mapping function on a first image to produce a second image. The first and second images are of different dynamic ranges. The method also includes applying, by the processor, a second tone mapping function to the second image when it contains any saturated portions. The second tone mapping function lowers luminance by a first fraction. The overall luminance of the second image is also determined and a fine tuning filter is applied when at least portions of said second image contain areas darker than an amount.
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公开(公告)号：US11558629B2
公开(公告)日：2023-01-17
申请号：US14768929
申请日：2014-02-17
IPC分类号： H04N19/44 , H04N21/438 , H04N21/235 , H04N19/573 , H04N19/30 , H04N19/176 , H04N19/50
摘要： A method for decoding a picture block is disclosed. The decoding method comprises: reconstructing reference picture from another reference picture of a decoder picture buffer of a first layer of a multi-layered stream and from data decoded from a second layer of said multi-layered stream and storing said reference picture in a decoder picture buffer of said second layer, wherein said reference picture is indicated as not to be displayed; decoding a flag indicating that a subsequently decoded picture of the second layer is not using any inter-layer prediction; and reconstructing a picture block of said subsequently decoded picture at least from said reference picture.
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5.发明申请公开(公告)号：US20220368954A1
公开(公告)日：2022-11-17
申请号：US17860752
申请日：2022-07-08
摘要： Different implementations are described, particularly implementations for processing a medium dynamic range video signal are presented. In a method for processing such a video signal a medium dynamic range video signal and associated metadata are received, wherein the metadata include data representative of a peak luminance value of the medium dynamic range video signal. In addition, data representative of a peak luminance value of a presentation display are received. It is determined whether the peak luminance value of the medium dynamic range video signal is greater or lower than the peak luminance value of the presentation display. A processor is configured based on the determination, wherein the processor has a first mode to reconstruct a high dynamic range video signal based on a received standard dynamic range video signal and associated metadata, and a second mode to optimize a received high dynamic range video signal for the rendering device. The medium dynamic range video signal is processed by the processor in the first mode if the peak luminance value of the medium dynamic range video signal is smaller than the peak luminance value of the presentation display and in the second mode if the peak luminance value of the medium dynamic range video signal is greater than the peak luminance value of the presentation display.
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6.发明申请公开(公告)号：US20200099955A1
公开(公告)日：2020-03-26
申请号：US16695336
申请日：2019-11-26
IPC分类号： H04N19/597 , H04N13/161 , H04N13/117 , H04N19/172 , H04N19/162 , H04N19/105
摘要： Encoding or decoding a stack of images of a same scene focused at different focalization distances from one image to another can involve encoding or decoding information representing an image of the stack of images, where the image meets an image sharpness criterion, reconstructing the image into a reconstructed image, and encoding or decoding at least one other image of the stack of images by prediction from at least the reconstructed image.
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公开(公告)号：US10462492B2
公开(公告)日：2019-10-29
申请号：US15353045
申请日：2016-11-16
发明人： Fabrice Leleannec , Sebastien Lasserre , Franck Galpin , Tangi Poirier , Patrick Lopez , Yannick Olivier , Edouard Francois
IPC分类号： H04N19/70 , H04N19/136 , H04N19/65 , H04N19/196 , H04N19/98
摘要： A method for coding an HDR picture is disclosed that includes mapping the HDR picture to obtain a SDR picture, determining color correcting parameters, color correcting said SDR picture responsive to said color correcting parameters, and encoding the color corrected SDR picture in a stream. In the method, determining color correcting parameters includes determining an intermediate SDR picture so that at least one color appearance value is preserved between said HDR picture and said intermediate SDR picture, and determining the color correcting parameters from said intermediate SDR picture and from said SDR picture.
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公开(公告)号：US20240333954A1
公开(公告)日：2024-10-03
申请号：US18743536
申请日：2024-06-14
IPC分类号： H04N19/44 , H04N19/176 , H04N19/30 , H04N19/50 , H04N19/573 , H04N21/235 , H04N21/438
CPC分类号： H04N19/44 , H04N19/176 , H04N19/30 , H04N19/50 , H04N19/573 , H04N21/2358 , H04N21/4384
摘要： A method for decoding a picture block is disclosed. The decoding method comprises: decoding (10) at least one stream S_diff into decoded data and into one information for identifying a reconstructed reference picture in a decoder picture buffer; reconstructing (12) a special reference picture from at least the identified reconstructed reference picture and from the decoded data; reconstructing (16) the picture block from at least the special reference picture, wherein the at least the special reference picture is not displayed.
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9.发明授权公开(公告)号：US11388447B2
公开(公告)日：2022-07-12
申请号：US17261658
申请日：2019-07-11
IPC分类号： H04N19/98 , H04N19/70 , G06T5/00 , H04N19/186
摘要： A medium dynamic range video signal and associated metadata are received, wherein the metadata include data representative of a peak luminance value of the signal. The medium dynamic range video signal is processed in a first mode to reconstruct a high dynamic range video signal based on a received standard dynamic range video signal and associated metadata if the peak luminance value of the medium dynamic range video signal is smaller than the peak luminance value of a presentation display, and in a second mode to optimize a received high dynamic range video signal for a rendering device if the peak luminance value of the medium dynamic range video signal is greater than the peak luminance value of the presentation display.
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公开(公告)号：US10701373B2
公开(公告)日：2020-06-30
申请号：US14769087
申请日：2014-02-17
IPC分类号： H04N19/176 , H04N19/30 , H04N19/573 , H04N21/438 , H04N21/235 , H04N19/44
摘要： A method for decoding a picture block is disclosed. The decoding method comprises: decoding decoded data, and information for identifying a reconstructed reference picture in a decoder picture buffer; reconstructing another reference picture from the identified reconstructed reference picture identified by the information and from the decoded data; replacing in the decoder picture buffer the reconstructed reference picture identified by the information with the another reference picture; and reconstructing the picture block from the another reference picture.
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