公开(公告)号：US20240422342A1

公开(公告)日：2024-12-19

申请号：US18819477

申请日：2024-08-29

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

IPC: H04N19/503 ,  H04N19/107 ,  H04N19/109 ,  H04N19/43 ,  H04N19/593

Abstract: A method for decoding encoded blocks of pixels from an encoded video bit stream is provided that includes decoding a block vector corresponding to an encoded block of pixels from the encoded bit stream, verifying that the block vector indicates a block of reconstructed pixels in a search area including reconstructed pixels of a largest coding unit (LCU) including the encoded block of pixels and N left neighboring reconstructed LCUs of the LCU, and decoding the encoded block of pixels, wherein the block of reconstructed pixels is used as a predictor for the encoded block of pixels.

公开(公告)号：US20240155162A1

公开(公告)日：2024-05-09

申请号：US18545046

申请日：2023-12-19

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Woo-Shik Kim ,  Do-Kyoung Kwon

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

公开(公告)号：US11838497B2

公开(公告)日：2023-12-05

申请号：US17118310

申请日：2020-12-10

Applicant: TEXAS INSTRUMENTS INCORPORATED

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

IPC: H04N17/00 ,  H04N7/18 ,  B60R1/00 ,  G06V20/56 ,  G06V10/24 ,  G06V10/10

CPC classification number: H04N17/002 ,  B60R1/00 ,  G06V20/56 ,  H04N7/181 ,  B60R2300/102 ,  B60R2300/105 ,  B60R2300/402 ,  G06V10/16 ,  G06V10/245

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：US11533503B2

公开(公告)日：2022-12-20

申请号：US17123587

申请日：2020-12-16

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

IPC: H04N19/503 ,  H04N19/107 ,  H04N19/109 ,  H04N19/43 ,  H04N19/593

Abstract: A method for decoding encoded blocks of pixels from an encoded video bit stream is provided that includes decoding a block vector corresponding to an encoded block of pixels from the encoded bit stream, verifying that the block vector indicates a block of reconstructed pixels in a search area including reconstructed pixels of a largest coding unit (LCU) including the encoded block of pixels and N left neighboring reconstructed LCUs of the LCU, and decoding the encoded block of pixels, wherein the block of reconstructed pixels is used as a predictor for the encoded block of pixels.

公开(公告)号：US20220279215A1

公开(公告)日：2022-09-01

申请号：US17746890

申请日：2022-05-17

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：US20220021886A1

公开(公告)日：2022-01-20

申请号：US17488355

申请日：2021-09-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Do-Kyoung Kwon ,  Hyung-Joon Kim

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

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：US11025960B2

公开(公告)日：2021-06-01

申请号：US16741611

申请日：2020-01-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

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

IPC: H04N19/00 ,  H04N19/86 ,  H04N19/70 ,  H04N19/117 ,  H04N19/463 ,  H04N19/82 ,  H04N19/80 ,  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：US10904551B2

公开(公告)日：2021-01-26

申请号：US14229839

申请日：2014-03-29

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

IPC: H04N19/503 ,  H04N19/107 ,  H04N19/109 ,  H04N19/43 ,  H04N19/593

Abstract: A method for decoding encoded blocks of pixels from an encoded video bit stream is provided that includes decoding a block vector corresponding to an encoded block of pixels from the encoded bit stream, verifying that the block vector indicates a block of reconstructed pixels in a search area including reconstructed pixels of a largest coding unit (LCU) including the encoded block of pixels and N left neighboring reconstructed LCUs of the LCU, and decoding the encoded block of pixels, wherein the block of reconstructed pixels is used as a predictor for the encoded block of pixels.

公开(公告)号：US20200329245A1

公开(公告)日：2020-10-15

申请号：US16911638

申请日：2020-06-25

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi ,  Ming-Jun Chen

IPC: H04N19/154 ,  H04N19/597 ,  H04N19/176 ,  H04N19/124 ,  H04N19/142

Abstract: A method for encoding a multi-view frame in a video encoder is provided that includes computing a depth quality sensitivity measure for a multi-view coding block in the multi-view frame, computing a depth-based perceptual quantization scale for a 2D coding block of the multi-view coding block, wherein the depth-based perceptual quantization scale is based on the depth quality sensitive measure and a base quantization scale for the 2D frame including the 2D coding block, and encoding the 2D coding block using the depth-based perceptual quantization scale.

公开(公告)号：US10735743B2

公开(公告)日：2020-08-04

申请号：US16562880

申请日：2019-09-06

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi ,  Ming-Jun Chen

IPC: H04N19/00 ,  H04N19/154 ,  H04N19/597 ,  H04N19/176 ,  H04N19/124 ,  H04N19/142 ,  H04N13/00

Abstract: A method for encoding a multi-view frame in a video encoder is provided that includes computing a depth quality sensitivity measure for a multi-view coding block in the multi-view frame, computing a depth-based perceptual quantization scale for a 2D coding block of the multi-view coding block, wherein the depth-based perceptual quantization scale is based on the depth quality sensitive measure and a base quantization scale for the 2D frame including the 2D coding block, and encoding the 2D coding block using the depth-based perceptual quantization scale.