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公开(公告)号：US12167049B2
公开(公告)日：2024-12-10
申请号：US18197177
申请日：2023-05-15
Applicant: Texas Instruments Incorporated
IPC: H04N19/895 , H04N19/107 , H04N19/172 , H04N19/39 , H04N19/65
Abstract: A method is provided that includes receiving pictures of a video sequence in a video encoder, and encoding the pictures to generate a compressed video bit stream that is transmitted to a video decoder in real-time, wherein encoding the pictures includes selecting a picture to be encoded as a delayed duplicate intra-predicted picture (DDI), wherein the picture would otherwise be encoded as an inter-predicted picture (P-picture), encoding the picture as an intra-predicted picture (I-picture) to generate the DDI, wherein the I-picture is reconstructed and stored for use as a reference picture for a decoder refresh picture, transmitting the DDI to the video decoder in non-real time, selecting a subsequent picture to be encoded as the decoder refresh picture, and encoding the subsequent picture in the compressed bit stream as the decoder refresh picture, wherein the subsequent P-picture is encoded as a P-picture predicted using the reference picture.
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公开(公告)号：US20230283808A1
公开(公告)日：2023-09-07
申请号：US18197177
申请日：2023-05-15
Applicant: Texas Instruments Incorporated
IPC: H04N19/895 , H04N19/172 , H04N19/107 , H04N19/39 , H04N19/65
CPC classification number: H04N19/895 , H04N19/172 , H04N19/107 , H04N19/39 , H04N19/65
Abstract: A method is provided that includes receiving pictures of a video sequence in a video encoder, and encoding the pictures to generate a compressed video bit stream that is transmitted to a video decoder in real-time, wherein encoding the pictures includes selecting a picture to be encoded as a delayed duplicate intra-predicted picture (DDI), wherein the picture would otherwise be encoded as an inter-predicted picture (P-picture), encoding the picture as an intra-predicted picture (I-picture) to generate the DDI, wherein the I-picture is reconstructed and stored for use as a reference picture for a decoder refresh picture, transmitting the DDI to the video decoder in non-real time, selecting a subsequent picture to be encoded as the decoder refresh picture, and encoding the subsequent picture in the compressed bit stream as the decoder refresh picture, wherein the subsequent P-picture is encoded as a P-picture predicted using the reference picture.
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公开(公告)号：US20180184130A1
公开(公告)日：2018-06-28
申请号：US15905588
申请日：2018-02-26
Applicant: Texas Instruments Incorporated
IPC: H04N19/895 , H04N19/65 , H04N19/39 , H04N19/107 , H04N19/172
CPC classification number: H04N19/895 , H04N19/107 , H04N19/172 , H04N19/39 , H04N19/65
Abstract: A method is provided that includes receiving pictures of a video sequence in a video encoder, and encoding the pictures to generate a compressed video bit stream that is transmitted to a video decoder in real-time, wherein encoding the pictures includes selecting a picture to be encoded as a delayed duplicate intra-predicted picture (DDI), wherein the picture would otherwise be encoded as an inter-predicted picture (P-picture), encoding the picture as an intra-predicted picture (I-picture) to generate the DDI, wherein the I-picture is reconstructed and stored for use as a reference picture for a decoder refresh picture, transmitting the DDI to the video decoder in non-real time, selecting a subsequent picture to be encoded as the decoder refresh picture, and encoding the subsequent picture in the compressed bit stream as the decoder refresh picture, wherein the subsequent P-picture is encoded as a P-picture predicted using the reference picture.
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公开(公告)号：US20160165232A1
公开(公告)日：2016-06-09
申请号：US15043973
申请日：2016-02-15
Applicant: Texas Instruments Incorporated
Inventor： Ranga Ramanujam Srinivasan
IPC: H04N19/11 , H04N19/136 , H04N19/61 , H04N19/176
CPC classification number: H04N19/11 , H04N19/119 , H04N19/136 , H04N19/147 , H04N19/157 , H04N19/174 , H04N19/176 , H04N19/33 , H04N19/593 , H04N19/61
Abstract: Several systems and methods for intra-prediction estimation of video pictures are disclosed. In an embodiment, the method includes accessing four ‘N×N’ pixel blocks comprising luma-related pixels. The four ‘N×N’ pixel blocks collectively configure a ‘2N×2N’ pixel block. A first pre-determined number of candidate luma intra-prediction modes is accessed for each of the four ‘N×N’ pixel blocks. A presence of one or more luma intra-prediction modes that are common among the candidate luma intra-prediction modes of at least two of the four ‘N×N’ pixel blocks is identified. The method further includes performing, based on the identification, one of (1) selecting a principal luma intra-prediction mode for the ‘2N×2N’ pixel block and (2) limiting a partitioning size to a ‘N×N’ pixel block size for a portion of the video picture corresponding to the ‘2N×2N’ pixel block.
Abstract translation: 公开了用于视频图像的帧内预测估计的几种系统和方法。 在一个实施例中，该方法包括访问包括亮度相关像素的四个“N×N”像素块。 四个“N×N”像素块共同配置“2N×2N”像素块。 对于四个“N×N”像素块中的每一个访问第一预定数量的候选亮度帧内预测模式。 识别在四个“N×N”像素块中的至少两个的候选亮度帧内预测模式中共有的一个或多个亮度帧内预测模式的存在。 该方法还包括以下步骤：（1）为“2N×2N”像素块选择主要亮度帧内预测模式，（2）将分割大小限制为“N×N”像素块 对应于“2N×2N”像素块的视频图像的一部分的大小。
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公开(公告)号：US10178385B2
公开(公告)日：2019-01-08
申请号：US15785236
申请日：2017-10-16
Applicant: Texas Instruments Incorporated
Inventor： Ranga Ramanujam Srinivasan , Hyung Joon Kim , Akira Osamoto
IPC: H04N19/11 , H04N19/176 , H04N19/119 , H04N19/147 , H04N19/157 , H04N19/174 , H04N19/33 , H04N19/593 , H04N19/136 , H04N19/61
Abstract: Several systems and methods for intra-prediction estimation of video pictures are disclosed. In an embodiment, the method includes accessing four ‘N×N’ pixel blocks comprising luma-related pixels. The four ‘N×N’ pixel blocks collectively configure a ‘2N×2N’ pixel block. A first pre-determined number of candidate luma intra-prediction modes is accessed for each of the four ‘N×N’ pixel blocks. A presence of one or more luma intra-prediction modes that are common among the candidate luma intra-prediction modes of at least two of the four ‘N×N’ pixel blocks is identified. The method further includes performing, based on the identification, one of (1) selecting a principal luma intra-prediction mode for the ‘2N×2N’ pixel block and (2) limiting a partitioning size to a ‘N×N’ pixel block size for a portion of the video picture corresponding to the ‘2N×2N’ pixel block.
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Patent Agency Ranking
公开(公告)号：US20180234687A1
公开(公告)日：2018-08-16
申请号：US15954139
申请日：2018-04-16
Applicant: Texas Instruments Incorporated
Inventor： Ajit Deepak Gupte , Ranga Ramanujam Srinivasan
IPC: H04N19/186 , H04N19/147 , H04N19/107 , H04N19/176
CPC classification number: H04N19/186 , H04N19/107 , H04N19/147 , H04N19/176
Abstract: Several methods and systems for chroma residual data prediction for encoding blocks corresponding to video data are disclosed. In an embodiment, at least one coefficient correlating reconstructed luma residual samples and corresponding reconstructed chroma residual samples is computed for one or more encoded blocks of video data. Predicted chroma residual samples are generated for encoding a block of video data based on corresponding reconstructed luma residual samples and the at least one coefficient.
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公开(公告)号：US09906815B2
公开(公告)日：2018-02-27
申请号：US13671344
申请日：2012-11-07
Applicant: Texas Instruments Incorporated
IPC: H04N7/32 , H04N19/895 , H04N19/172 , H04N19/107 , H04N19/39 , H04N19/65
CPC classification number: H04N19/895 , H04N19/107 , H04N19/172 , H04N19/39 , H04N19/65
Abstract: A method is provided that includes receiving pictures of a video sequence in a video encoder, and encoding the pictures to generate a compressed video bit stream that is transmitted to a video decoder in real-time, wherein encoding the pictures includes selecting a picture to be encoded as a delayed duplicate intra-predicted picture (DDI), wherein the picture would otherwise be encoded as an inter-predicted picture (P-picture), encoding the picture as an intra-predicted picture (I-picture) to generate the DDI, wherein the I-picture is reconstructed and stored for use as a reference picture for a decoder refresh picture, transmitting the DDI to the video decoder in non-real time, selecting a subsequent picture to be encoded as the decoder refresh picture, and encoding the subsequent picture in the compressed bit stream as the decoder refresh picture, wherein the subsequent P-picture is encoded as a P-picture predicted using the reference picture.
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公开(公告)号：US09794560B2
公开(公告)日：2017-10-17
申请号：US15043973
申请日：2016-02-15
Applicant: Texas Instruments Incorporated
Inventor： Ranga Ramanujam Srinivasan
IPC: H04N7/12 , G06F17/30 , H04N19/11 , H04N19/119 , H04N19/147 , H04N19/157 , H04N19/174 , H04N19/33 , H04N19/593 , H04N19/136 , H04N19/176 , H04N19/61
CPC classification number: H04N19/11 , H04N19/119 , H04N19/136 , H04N19/147 , H04N19/157 , H04N19/174 , H04N19/176 , H04N19/33 , H04N19/593 , H04N19/61
Abstract: Several systems and methods for intra-prediction estimation of video pictures are disclosed. In an embodiment, the method includes accessing four ‘N×N’ pixel blocks comprising luma-related pixels. The four ‘N×N’ pixel blocks collectively configure a ‘2N×2N’ pixel block. A first pre-determined number of candidate luma intra-prediction modes is accessed for each of the four ‘N×N’ pixel blocks. A presence of one or more luma intra-prediction modes that are common among the candidate luma intra-prediction modes of at least two of the four ‘N×N’ pixel blocks is identified. The method further includes performing, based on the identification, one of (1) selecting a principal luma intra-prediction mode for the ‘2N×2N’ pixel block and (2) limiting a partitioning size to a ‘N×N’ pixel block size for a portion of the video picture corresponding to the ‘2N×2N’ pixel block.
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公开(公告)号：US20140064366A1
公开(公告)日：2014-03-06
申请号：US14017236
申请日：2013-09-03
Applicant: Texas Instruments Incorporated
IPC: H04N7/50
CPC classification number: H04N19/176 , H04N19/11 , H04N19/147
Abstract: A method for intra-prediction estimation is provided that includes determining a best intra-prediction mode for a block of samples, wherein at least some of the neighboring samples used for intra-prediction estimation include approximate reconstructed samples, applying approximate reconstruction to the block of samples using the best intra-prediction mode to generate a block of approximate reconstructed samples, and storing the block of approximate reconstructed samples for use in intra-prediction estimation of other blocks of samples.
Abstract translation: 提供了一种用于帧内预测估计的方法，其包括确定用于样本块的最佳帧内预测模式，其中用于帧内预测估计的至少一些相邻采样包括近似重建样本，将近似重建应用于 使用最佳帧内预测模式的样本来生成近似重构样本的块，以及存储用于其他块样本的帧内预测估计的近似重构样本块。
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公开(公告)号：US12219156B2
公开(公告)日：2025-02-04
申请号：US17726463
申请日：2022-04-21
Applicant: Texas Instruments Incorporated
Inventor： Ajit Deepak Gupte , Ranga Ramanujam Srinivasan
IPC: H04N19/107 , H04N19/147 , H04N19/176 , H04N19/186
Abstract: Several methods and systems for chroma residual data prediction for encoding blocks corresponding to video data are disclosed. In an embodiment, at least one coefficient correlating reconstructed luma residual samples and corresponding reconstructed chroma residual samples is computed for one or more encoded blocks of video data. Predicted chroma residual samples are generated for encoding a block of video data based on corresponding reconstructed luma residual samples and the at least one coefficient.
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