公开(公告)号：US11102497B2

公开(公告)日：2021-08-24

申请号：US16701700

申请日：2019-12-03

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

IPC: H04N19/31 ,  H04N19/46 ,  H04N19/423 ,  H04N19/573 ,  H04N19/577 ,  H04N19/105 ,  H04N19/172 ,  H04N19/156 ,  H04N19/187 ,  H04N19/44 ,  H04N19/33

Abstract: A method for encoding a video sequence in a scalable video encoder to generate a scalable bitstream is provided that includes encoding the video sequence in a first layer encoder of the scalable video encoder to generate a first sub-bitstream, encoding the video sequence in a second layer encoder of the scalable video encoder to generate a second sub-bitstream, wherein portions of the video sequence being encoded in the second layer encoder are predicted using reference portions of the video sequence encoded in the first layer encoder, combining the first sub-bitstream and the second sub-bitstream to generate the scalable bitstream, and signaling in the scalable bitstream an indication of a maximum decoded picture buffer (DPB) size needed for decoding the second sub-bitstream and the first sub-bitstream when the second sub-bitstream is a target sub-bitstream for decoding.

公开(公告)号：US10911745B2

公开(公告)日：2021-02-02

申请号：US15393168

申请日：2016-12-28

Applicant: Texas Instruments Incorporated

Inventor： Sujith Shivalingappa ,  Vikram Appia ,  Anand Yalgurdrao Kulkarni ,  Do-Kyoung Kwon

IPC: H04N7/18 ,  G06K9/00 ,  B60R1/00 ,  G06K9/32 ,  G06K9/20 ,  H04N17/00

Abstract: A method for automatic generation of calibration parameters for a surround view (SV) camera system is provided that includes capturing a video stream from each camera comprised in the SV camera system, wherein each video stream captures two calibration charts in a field of view of the camera generating the video stream; displaying the video streams in a calibration screen on a display device coupled to the SV camera system, wherein a bounding box is overlaid on each calibration chart, detecting feature points of the calibration charts, displaying the video streams in the calibration screen with the bounding box overlaid on each calibration chart and detected features points overlaid on respective calibration charts, computing calibration parameters based on the feature points and platform dependent parameters comprising data regarding size and placement of the calibration charts, and storing the calibration parameters in the SV camera system.

公开(公告)号：US20200236365A1

公开(公告)日：2020-07-23

申请号：US16838619

申请日：2020-04-02

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Do-Kyoung Kwon ,  Hyung-Joon Kim

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

Abstract: An embodiment includes 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：US20190075294A1

公开(公告)日：2019-03-07

申请号：US16185401

申请日：2018-11-09

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Hyung Joon Kim ,  Madhukar Budagavi

IPC: H04N19/129 ,  H04N19/139 ,  H04N19/172

Abstract: A method and apparatus for frame coding in adaptive raster scan order. The method includes encoding at least one of image or video utilizing input frames and at least one of a data related to the input frame to produce bitstream with raster scan order information and displacement information for producing compressed video bitstream, at decoding time, decoding at least one of the encoded bitstream with raster scan order information and displacement information for producing compressed video bitstream.

公开(公告)号：US20180376168A1

公开(公告)日：2018-12-27

申请号：US16056215

申请日：2018-08-06

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Vivienne Sze ,  Madhukar Budagavi ,  Woo-Shik Kim ,  Do-Kyoung Kwon ,  Minhua Zhou

IPC: H04N19/86 ,  H04N19/91 ,  H04N19/80 ,  H04N19/70 ,  H04N19/463 ,  H04N19/117 ,  H04N19/82

CPC classification number: H04N19/86 ,  H04N19/117 ,  H04N19/463 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82 ,  H04N19/91

Abstract: A method for sample adaptive offset (SAO) filtering and SAO parameter signaling in a video encoder is provided that includes determining SAO parameters for largest coding units (LCUs) of a reconstructed picture, wherein the SAO parameters include an indicator of an SAO filter type and a plurality of SAO offsets, applying SAO filtering to the reconstructed picture according to the SAO parameters, and entropy encoding LCU specific SAO information for each LCU of the reconstructed picture in an encoded video bit stream, wherein the entropy encoded LCU specific SAO information for the LCUs is interleaved with entropy encoded data for the LCUs in the encoded video bit stream. Determining SAO parameters may include determining the LCU specific SAO information to be entropy encoded for each LCU according to an SAO prediction protocol.

公开(公告)号：US10165276B2

公开(公告)日：2018-12-25

申请号：US15583460

申请日：2017-05-01

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Hyung Joon Kim ,  Madhukar Budagavi

IPC: G06K9/36 ,  H04N19/129 ,  H04N19/172 ,  H04N19/139

Abstract: A method and apparatus for frame coding in adaptive raster scan order. The method includes encoding at least one of image or video utilizing input frames and at least one of a data related to the input frame to produce bitstream with raster scan order information and displacement information for producing compressed video bitstream, at decoding time, decoding at least one of the encoded bitstream with raster scan order information and displacement information for producing compressed video bitstream.

公开(公告)号：US20180367801A1

公开(公告)日：2018-12-20

申请号：US16110347

申请日：2018-08-23

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Do-Kyoung Kwon ,  Hyung-Joon Kim

IPC: H04N19/154 ,  H04N19/172 ,  H04N19/115 ,  H04N19/194

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

Abstract: An embodiment includes 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：US20180234688A1

公开(公告)日：2018-08-16

申请号：US15948891

申请日：2018-04-09

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

IPC: H04N19/31 ,  H04N19/46 ,  H04N19/423 ,  H04N19/573 ,  H04N19/577 ,  H04N19/33 ,  H04N19/105 ,  H04N19/156 ,  H04N19/172 ,  H04N19/44 ,  H04N19/187

CPC classification number: H04N19/31 ,  H04N19/105 ,  H04N19/156 ,  H04N19/172 ,  H04N19/187 ,  H04N19/33 ,  H04N19/423 ,  H04N19/44 ,  H04N19/46 ,  H04N19/573 ,  H04N19/577

Abstract: A method for encoding a video sequence in a scalable video encoder to generate a scalable bitstream is provided that includes encoding the video sequence in a first layer encoder of the scalable video encoder to generate a first sub-bitstream, encoding the video sequence in a second layer encoder of the scalable video encoder to generate a second sub-bitstream, wherein portions of the video sequence being encoded in the second layer encoder are predicted using reference portions of the video sequence encoded in the first layer encoder, combining the first sub-bitstream and the second sub-bitstream to generate the scalable bitstream, and signaling in the scalable bitstream an indication of a maximum decoded picture buffer (DPB) size needed for decoding the second sub-bitstream and the first sub-bitstream when the second sub-bitstream is a target sub-bitstream for decoding.

公开(公告)号：US20170289540A9

公开(公告)日：2017-10-05

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.

公开(公告)号：US20160261843A1

公开(公告)日：2016-09-08

申请号：US15155147

申请日：2016-05-16

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ming-Jun Chen ,  Do-Kyoung Kwon

IPC: H04N13/00

CPC classification number: H04N13/122 ,  H04N13/128 ,  H04N13/144

Abstract: First and second views of a stereoscopic image are received. In response to determining that the stereoscopic image has a predominance of foreground features, a convergence plane of the stereoscopic image is adjusted to improve a depth resolution of at least one foreground feature within the stereoscopic image for display to a human by a display device. In response to determining that the stereoscopic image has a predominance of background features, the convergence plane is adjusted to position at least most of the stereoscopic image as background features for display to the human by the display device.

Abstract translation: 接收立体图像的第一和第二视图。 响应于确定立体图像具有前景特征的优势，调整立体图像的会聚平面以改善立体图像内的至少一个前景特征的深度分辨率，以由显示设备向人展示。 响应于确定立体图像具有背景特征的优势，调整会聚平面以将至少大部分立体图像定位为背景特征，以由显示装置显示给人。