公开(公告)号：US20190238857A1

公开(公告)日：2019-08-01

申请号：US16377373

申请日：2019-04-08

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Do-Kyoung Kwon ,  Hyung-Joon Kim

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

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：US10298963B2

公开(公告)日：2019-05-21

申请号：US15008888

申请日：2016-01-28

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Woo-Shik Kim ,  Do-Kyoung Kwon

IPC: H04N19/91 ,  H04N19/176 ,  H04N19/117 ,  H04N19/14 ,  H04N19/82 ,  H04N19/182 ,  H04N19/80

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.

公开(公告)号：US10298936B2

公开(公告)日：2019-05-21

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

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：US20190052896A1

公开(公告)日：2019-02-14

申请号：US16161428

申请日：2018-10-16

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

IPC: H04N19/567

Abstract: A method for encoding video data is provided that includes determining whether or not a parent coding unit of a coding unit of the video data was predicted in intra-prediction block copy (IntraBC) mode and, when it is determined that the parent coding unit was not predicted in IntraBC mode: computing activity of the coding unit, determining an IntraBC coding cost of the coding unit by computing the IntraBC coding cost of the coding unit using a two dimensional (2D) search when the activity of the coding unit is not than an activity threshold, and computing the IntraBC coding cost of the coding unit using a one dimensional (1D) search when the activity of the coding unit is less than the activity threshold, using the IntraBC coding cost to select an encoding mode from one of a plurality of encoding modes, encoding the coding unit using the selected encoding mode.

公开(公告)号：US20190037224A1

公开(公告)日：2019-01-31

申请号：US16145256

申请日：2018-09-28

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

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

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 in the scalable bitstream, and signaling an indication of a highest temporal level of the first sub-bitstream comprising at least one of the reference portions in the scalable bitstream.

公开(公告)号：US10116931B2

公开(公告)日：2018-10-30

申请号：US14137995

申请日：2013-12-20

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

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

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 in the scalable bitstream, and signaling an indication of a highest temporal level of the first sub-bitstream comprising at least one of the reference portions in the scalable bitstream.

公开(公告)号：US10104395B2

公开(公告)日：2018-10-16

申请号：US14506085

申请日：2014-10-03

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

IPC: H04B1/66 ,  H04N7/12 ,  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.

公开(公告)号：US09942545B2

公开(公告)日：2018-04-10

申请号：US14138002

申请日：2013-12-20

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

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

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：US09641856B2

公开(公告)日：2017-05-02

申请号：US14561816

申请日：2014-12-05

Applicant: Texas Instruments Incorporated

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

IPC: G06K9/36 ,  H04N19/46 ,  H04N5/232 ,  H04N19/176 ,  H04N19/102 ,  H04N19/61 ,  H04N19/137 ,  H04N19/51 ,  H04N19/70

CPC classification number: H04N19/46 ,  H04N5/23258 ,  H04N19/102 ,  H04N19/137 ,  H04N19/176 ,  H04N19/51 ,  H04N19/61 ,  H04N19/70

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：US20170026654A1

公开(公告)日：2017-01-26

申请号：US15056193

申请日：2016-02-29

Applicant: Texas Instruments Incorporated

Inventor： Woo-Shik Kim ,  Do-Kyoung Kwon

IPC: H04N19/30 ,  H04N19/82 ,  H04N19/182 ,  H04N19/463

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。