公开(公告)号：US20220007012A1

公开(公告)日：2022-01-06

申请号：US17476051

申请日：2021-09-15

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ranga Ramanujam Srinivasan ,  Hyung Joon Kim ,  Akira Osamoto

IPC: H04N19/11 ,  H04N19/119 ,  H04N19/147 ,  H04N19/157 ,  H04N19/174 ,  H04N19/33 ,  H04N19/593 ,  H04N19/136 ,  H04N19/176 ,  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.

公开(公告)号：US20210058645A1

公开(公告)日：2021-02-25

申请号：US17093695

申请日：2020-11-10

Applicant: Texas Instruments Incorporated

Inventor： Ranga Ramanujam Srinivasan ,  Chaitanya Satish Ghone ,  Mihir Narendra Mody ,  Minhua Zhou

IPC: 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.

公开(公告)号：US20180367804A1

公开(公告)日：2018-12-20

申请号：US16010926

申请日：2018-06-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ranga Ramanujam Srinivasan ,  Mahant Siddaramanna ,  Naveen Srinivasamurthy

IPC: 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.

公开(公告)号：US09264710B2

公开(公告)日：2016-02-16

申请号：US13936249

申请日：2013-07-08

Applicant: Texas Instruments Incorporated

Inventor： Ranga Ramanujam Srinivasan ,  Hyung Joon Kim ,  Akira Osamoto

IPC: H04N7/12 ,  H04N13/00 ,  G06F7/00 ,  H04N19/593 ,  H04N19/119 ,  H04N19/147 ,  H04N19/11 ,  H04N19/157 ,  H04N19/174 ,  H04N19/33

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”像素块共同地配置“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。

公开(公告)号：US20140010293A1

公开(公告)日：2014-01-09

申请号：US13936249

申请日：2013-07-08

Applicant: Texas Instruments Incorporated

Inventor： Ranga Ramanujam Srinivasan ,  Hyung Joon Kim ,  Akira Osamoto

IPC: H04N7/34

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”像素块共同地配置“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。

公开(公告)号：US20130094779A1

公开(公告)日：2013-04-18

申请号：US13644800

申请日：2012-10-04

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Madhukar Budagavi ,  Ranga Ramanujam Srinivasan

IPC: G06T5/00

CPC classification number: G06T5/002 ,  G06T2207/10016 ,  G06T2207/20021

Abstract: A motion compensation method and apparatus. The method includes retrieving data relating to a reference bock, performing a transpose on the retrieved data, performing vertical filtering on the transposed retrieved data, performing one or more transpose on the vertically filtered data, performing horizontal filtering on the transposed vertically filtered dad, and generating an interpolated bock and storing the interpolated block.

Abstract translation: 运动补偿方法和装置。 该方法包括检索与参考块相关的数据，对检索的数据执行转置，对转置的检索数据执行垂直滤波，对垂直滤波的数据执行一个或多个转置，对转置的垂直滤波的父进行水平滤波;以及 产生插值块并存储插值块。

公开(公告)号：US11659171B2

公开(公告)日：2023-05-23

申请号：US17476051

申请日：2021-09-15

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

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.

公开(公告)号：US11381813B2

公开(公告)日：2022-07-05

申请号：US16813983

申请日：2020-03-10

Applicant: Texas Instruments Incorporated

Inventor： Ranga Ramanujam Srinivasan ,  Hyung Joon Kim ,  Akira Osamoto

IPC: H04N19/33 ,  H04N19/176 ,  H04N19/11 ,  H04N19/119 ,  H04N19/147 ,  H04N19/157 ,  H04N19/174 ,  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.

公开(公告)号：US10805619B2

公开(公告)日：2020-10-13

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

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.

公开(公告)号：US20190104305A1

公开(公告)日：2019-04-04

申请号：US16205319

申请日：2018-11-30

Applicant: Texas Instruments Incorporated

Inventor： Ranga Ramanujam Srinivasan ,  Hyung Joon Kim ,  Akira Osamoto

IPC: H04N19/11 ,  H04N19/61 ,  H04N19/176 ,  H04N19/136 ,  H04N19/593 ,  H04N19/119 ,  H04N19/174 ,  H04N19/157 ,  H04N19/147 ,  H04N19/33

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.