公开(公告)号：US20160330446A1

公开(公告)日：2016-11-10

申请号：US15213192

申请日：2016-07-18

Applicant: Texas Instruments Incorporated

Inventor： Mahant Siddaramanna ,  Naveen Srinivasamurthy ,  Soyeb Nagori

IPC: H04N19/11 ,  H04N19/593 ,  H04N19/176 ,  H04N19/119 ,  H04N19/159

CPC classification number: H04N19/11 ,  H04N19/119 ,  H04N19/14 ,  H04N19/159 ,  H04N19/176 ,  H04N19/593

Abstract: According to an aspect of the present disclosure, a video encoder selects a block of intermediate size from a set of block sizes for intra-prediction estimation for encoding a video signal. A set of neighbouring blocks with the intermediate size are tested for combining. If the set of neighbouring blocks are determined to be combinable, the video encoder selects a larger block size formed by the tested neighbouring blocks for encoding. On the other hand, if the set of neighbouring blocks are determined to be not combinable, the video encoder selects a smaller block size from the set of tested neighbouring blocks for prediction. According to another aspect of the present disclosure, the best mode for intra-prediction is determined by first intra-predicting a block with intermediate modes in a set of modes. Then the intra-predictions are performed for the neighbouring modes of at least one intermediate mode.

Abstract translation: 根据本公开的一个方面，视频编码器从用于编码视频信号的帧内预测估计的块大小的集合中选择中等大小的块。 测试一组具有中等大小的相邻块组合。 如果相邻块的集合被确定为可组合，则视频编码器选择由被测试的相邻块形成的较大的块大小进行编码。 另一方面，如果相邻块的集合被确定为不可组合，则视频编码器从所测试的相邻块的集合中选择较小的块大小用于预测。 根据本公开的另一方面，用于帧内预测的最佳模式是通过在一组模式中首先对具有中间模式进行预测的块来确定的。 然后对于至少一个中间模式的相邻模式执行帧内预测。

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

Inventor： Ranga Ramanujam Srinivasan ,  Mahant Siddaramanna ,  Naveen Srinivasamurthy

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。

公开(公告)号：US11902567B2

公开(公告)日：2024-02-13

申请号：US17706607

申请日：2022-03-29

Applicant: Texas Instruments Incorporated

Inventor： Mahant Siddaramanna ,  Yashwant Dutt

IPC: H04N19/527 ,  H04N19/107 ,  H04N19/124 ,  H04N19/174 ,  H04N19/167

CPC classification number: H04N19/527 ,  H04N19/107 ,  H04N19/124 ,  H04N19/167 ,  H04N19/174

Abstract: A video codec for encoding a sequence of video frames divides a video frame area into number of row segments. The Video encoder selects a different set of row segments in each video frame in a set of video frames and encodes the selected set of row segments by intra-prediction. As a result, the selected part of the frame is intra-refreshed. The video codec limits the maximum value of the vertical global motion vector GMVy to zero and video codec adjust the number of row segments in the select set of row segments based on the height of the search range configured for the motion estimation. As a result, the video codec may not refer to an un-refreshed portion in the previous frame for encoding an already refreshed area of the current frame.

公开(公告)号：US11889088B2

公开(公告)日：2024-01-30

申请号：US17676824

申请日：2022-02-22

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ranga Ramanujam Srinivasan ,  Mahant Siddaramanna ,  Naveen Srinivasamurthy

IPC: H04N19/176 ,  H04N19/147 ,  H04N19/11

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.

公开(公告)号：US20220182645A1

公开(公告)日：2022-06-09

申请号：US17676824

申请日：2022-02-22

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ranga Ramanujam Srinivasan ,  Mahant Siddaramanna ,  Naveen Srinivasamurthy

IPC: H04N19/176 ,  H04N19/147 ,  H04N19/11

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：US20200374548A1

公开(公告)日：2020-11-26

申请号：US16989921

申请日：2020-08-11

Applicant: Texas Instruments Incorporated

Inventor： Mahant Siddaramanna ,  Yashwant Dutt

IPC: H04N19/527 ,  H04N19/107 ,  H04N19/124 ,  H04N19/174 ,  H04N19/167

Abstract: A video codec for encoding a sequence of video frames divides a video frame area into number of row segments. The Video encoder selects a different set of row segments in each video frame in a set of video frames and encodes the selected set of row segments by intra-prediction. As a result, the selected part of the frame is intra-refreshed. The video codec limits the maximum value of the vertical global motion vector GMVy to zero and video codec adjust the number of row segments in the select set of row segments based on the height of the search range configured for the motion estimation. As a result, the video codec may not refer to an un-refreshed portion in the previous frame for encoding an already refreshed area of the current frame.

公开(公告)号：US20200314421A1

公开(公告)日：2020-10-01

申请号：US16901078

申请日：2020-06-15

Applicant: Texas Instruments Incorporated

Inventor： Naveen Srinivasamurthy ,  Mahant Siddaramanna ,  Soyeb Nagori

IPC: H04N19/115 ,  H04N19/149

Abstract: A method and system for bit rate control during encoding of multimedia data are disclosed. A change in complexity of a multimedia picture relative to complexity associated with one or more multimedia pictures in a multimedia sequence is determined. A complexity associated with a multimedia picture is determined based on number of bits and an average quantization associated with the multimedia picture. A bit rate is adjusted for encoding the multimedia picture based on the change in complexity of the multimedia picture. The bit rate is increased on determining an increase in complexity of the multimedia picture and is decreased on determining a decrease in complexity of the multimedia picture. Utilization of additional bits during the increase in the bit rate and saving of bits during the decrease in the bit rate are compensated during adjusting of bit rates for encoding subsequent multimedia pictures in the multimedia sequence.

公开(公告)号：US20180338141A1

公开(公告)日：2018-11-22

申请号：US16011160

申请日：2018-06-18

Applicant: Texas Instruments Incorporated

Inventor： Mahant Siddaramanna ,  Naveen Srinivasamurthy ,  Soyeb Nagori

IPC: H04N19/11 ,  H04N19/159 ,  H04N19/119 ,  H04N19/176 ,  H04N19/14 ,  H04N19/593

CPC classification number: H04N19/11 ,  H04N19/119 ,  H04N19/14 ,  H04N19/159 ,  H04N19/176 ,  H04N19/593

Abstract: According to an aspect of the present disclosure, a video encoder selects a block of intermediate size from a set of block sizes for intra-prediction estimation for encoding a video signal. A set of neighbouring blocks with the intermediate size are tested for combining. If the set of neighbouring blocks are determined to be combinable, the video encoder selects a larger block size formed by the tested neighbouring blocks for encoding. On the other hand, if the set of neighbouring blocks are determined to be not combinable, the video encoder selects a smaller block size from the set of tested neighbouring blocks for prediction. According to another aspect of the present disclosure, the best mode for intra-prediction is determined by first intra-predicting a block with intermediate modes in a set of modes. Then the intra-predictions are performed for the neighbouring modes of at least one intermediate mode.

公开(公告)号：US20180220151A1

公开(公告)日：2018-08-02

申请号：US15936431

申请日：2018-03-26

Applicant: Texas Instruments Incorporated

Inventor： Mahant Siddaramanna ,  Yashwant Dutt

IPC: H04N19/527 ,  H04N19/107 ,  H04N19/174 ,  H04N19/167 ,  H04N19/124

Abstract: A video codec for encoding a sequence of video frames divides a video frame area into number of row segments. The Video encoder selects a different set of row segments in each video frame in a set of video frames and encodes the selected set of row segments by intra-prediction. As a result, the selected part of the frame is intra-refreshed. The video codec limits the maximum value of the vertical global motion vector GMVy to zero and video codec adjust the number of row segments in the select set of row segments based on the height of the search range configured for the motion estimation. As a result, the video codec may not refer to an un-refreshed portion in the previous frame for encoding an already refreshed area of the current frame.

公开(公告)号：US20130114697A1

公开(公告)日：2013-05-09

申请号：US13670729

申请日：2012-11-07

Applicant: Texas Instruments Incorporated

Inventor： Mahant Siddaramanna ,  Yashwant Dutt

IPC: H04N7/32 ,  H04N7/26

CPC classification number: H04N19/527 ,  H04N19/107 ,  H04N19/124 ,  H04N19/167 ,  H04N19/174

Abstract: A video codec for encoding a sequence of video frames divides a video frame area into number of row segments. The Video encoder selects a different set of row segments in each video frame in a set of video frames and encodes the selected set of row segments by intra-prediction. As a result, the selected part of the frame is intra-refreshed. The video codec limits the maximum value of the vertical global motion vector GMVy to zero and video codec adjust the number of row segments in the select set of row segments based on the height of the search range configured for the motion estimation. As a result, the video codec may not refer to a un-refreshed portion in the previous frame for encoding an already refreshed area of the current frame.

Abstract translation: 用于对视频帧序列进行编码的视频编解码器将视频帧区域划分成行段数。 视频编码器在一组视频帧中的每个视频帧中选择一组不同的行段，并通过帧内预测对所选择的一组行段进行编码。 结果，帧的所选部分被刷新。 视频编解码器将垂直全局运动矢量GMVy的最大值限制为零，并且视频编解码器基于为运动估计配置的搜索范围的高度来调整所选择的行段集合中的行段数。 结果，视频编解码器可能不指代用于对当前帧的已经刷新的区域进行编码的前一帧中的未刷新部分。