公开(公告)号：US20160373761A1

公开(公告)日：2016-12-22

申请号：US15181210

申请日：2016-06-13

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Hyung-Joon Kim

IPC: H04N19/154 ,  H04N19/172 ,  H04N19/115

CPC classification number: H04N19/154 ,  H04N19/115 ,  H04N19/172 ,  H04N19/194

Abstract: A method and an encoder for SSIM-based bits allocation. The encoder includes a memory and a processor utilized for allocating bits based on SSIM, wherein the processor estimates the model parameter of SSIM-based distortion model for the current picture and determines allocates bits based on the SSIM estimation.

公开(公告)号：US09277194B2

公开(公告)日：2016-03-01

申请号：US13671722

申请日：2012-11-08

Applicant: Texas Instruments Incorporated

Inventor： Woo-Shik Kim ,  Do-Kyoung Kwon

IPC: H04N7/16 ,  H04N19/00 ,  H04N19/463 ,  H04N19/82

CPC classification number: H04N19/30 ,  H04N19/00 ,  H04N19/182 ,  H04N19/463 ,  H04N19/82

Abstract: A method and apparatus for image coding using hierarchical sample adaptive band offset. The method includes decoding a signal of a portion of an image, determining a band offset type and offset of a portion of the image, utilizing the band offset type and offset to determine a sub-band, and reconstructing a pixel value according to the determined offset value.

Abstract translation: 一种使用分层样本自适应带偏移进行图像编码的方法和装置。 该方法包括对图像的一部分的信号进行解码，利用带偏移类型和偏移来确定子带的一部分的带偏移类型和偏移量，并根据所确定的像素值重建像素值 补偿值。

公开(公告)号：US09253482B2

公开(公告)日：2016-02-02

申请号：US13671670

申请日：2012-11-08

Applicant: Texas Instruments Incorporated

Inventor： Woo-Shik Kim ,  Do-Kyoung Kwon

IPC: H04N19/00 ,  H04N19/182 ,  H04N19/176 ,  H04N19/117 ,  H04N19/14 ,  H04N19/82

CPC classification number: H04N19/91 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/80 ,  H04N19/82

Abstract: A method and apparatus for sample adaptive offset without sign coding. The method includes selecting an edge offset type for at least a portion of an image, classifying at least one pixel of at least the portion of the image into edge shape category, calculating an offset of the pixel, determining the offset is larger or smaller than a predetermined threshold, changing a sign of the offset based on the threshold determination; and performing entropy coding accounting for the sign of the offset and the value of the offset.

Abstract translation: 一种无符号编码的样本自适应偏移的方法和装置。 该方法包括为图像的至少一部分选择边缘偏移类型，将图像的至少部分的至少一个像素分类为边缘形状类别，计算像素的偏移，确定偏移大于或小于 预定阈值，基于所述阈值确定改变所述偏移的符号; 并执行熵编码计算偏移的符号和偏移的值。

公开(公告)号：US20150103910A1

公开(公告)日：2015-04-16

申请号：US14506085

申请日：2014-10-03

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

IPC: H04N19/107 ,  H04N19/533 ,  H04N19/19

CPC classification number: H04N19/567

Abstract: A method for encoding a video stream is provided that includes computing activity of a block of video data in the video stream when a parent block of the block is not predicted in intra block copy (IntraBC) mode, computing an IntraBC coding cost of the block based on a two dimensional (2D) search when the activity is not less than an activity threshold, computing the IntraBC coding cost of the block based on a one dimensional (1D) search when the activity is less than the activity threshold, and selecting a best mode for encoding the block based on the IntraBC coding cost.

Abstract translation: 提供了一种用于对视频流进行编码的方法，其中，当在块内复制（IntraBC）模式中未预测到块的父块时，该视频数据块的视频数据块的计算活动，计算块的IntraBC编码成本 当活动不小于活动阈值时，基于二维（2D）搜索，当活动小于活动阈值时，基于一维（1D）搜索计算块的IntraBC编码成本，并且选择 基于IntraBC编码成本对块进行编码的最佳模式。

公开(公告)号：US20130287099A1

公开(公告)日：2013-10-31

申请号：US13869253

申请日：2013-04-24

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

IPC: H04N7/26

CPC classification number: H04N19/20 ,  H04N19/126 ,  H04N19/14 ,  H04N19/157 ,  H04N19/176 ,  H04N19/86

Abstract: A method for encoding a video sequence in a video encoder is provided that includes adapting a quantization parameter of a block of pixels in a picture of the video sequence based on a transform block size of the block of pixels to determine a final quantization parameter, and quantizing transform coefficients of the block of pixels using the final quantization parameter.

Abstract translation: 提供了一种用于对视频编码器中的视频序列进行编码的方法，该方法包括：基于所述像素块的变换块大小来适配所述视频序列的图像中的像素块的量化参数，以确定最终的量化参数;以及 使用最终量化参数量化像素块的变换系数。

公开(公告)号：US20130128952A1

公开(公告)日：2013-05-23

申请号：US13632392

申请日：2012-10-01

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Hyungjoon Kim

IPC: H04N7/26

CPC classification number: H04N19/154 ,  H04N19/115 ,  H04N19/172 ,  H04N19/194

Abstract: A method and an encoder for SSIM-based bits allocation. The encoder includes a memory and a processor utilized for allocating bits based on SSIM, wherein the processor estimates the model parameter of SSIM-based distortion model for the current picture and determines allocates bits based on the SSIM estimation.

Abstract translation: 一种用于基于SSIM的比特分配的方法和编码器。 编码器包括存储器和用于基于SSIM分配比特的处理器，其中处理器估计当前图像的基于SSIM的失真模型的模型参数，并且基于SSIM估计确定分配比特。