公开(公告)号：US20210092354A1

公开(公告)日：2021-03-25

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 ,  G06K9/00 ,  B60R1/00 ,  G06K9/32

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：US20210084316A1

公开(公告)日：2021-03-18

申请号：US17107996

申请日：2020-12-01

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

IPC: H04N19/20 ,  H04N19/157 ,  H04N19/176 ,  H04N19/86 ,  H04N19/14 ,  H04N19/126

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：US10897625B2

公开(公告)日：2021-01-19

申请号：US13869253

申请日：2013-04-24

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

IPC: H04N19/20 ,  H04N19/157 ,  H04N19/176 ,  H04N19/86 ,  H04N19/14 ,  H04N19/126

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：US10447985B2

公开(公告)日：2019-10-15

申请号：US15155147

申请日：2016-05-16

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ming-Jun Chen ,  Do-Kyoung Kwon

IPC: 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.

公开(公告)号：US10438081B2

公开(公告)日：2019-10-08

申请号：US15294369

申请日：2016-10-14

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Do-Kyoung Kwon ,  Aziz Umit Batur ,  Vikram Appia

IPC: G06K9/32 ,  G06K9/46 ,  G06T7/80 ,  H04N5/232

Abstract: In some embodiments, a computer-readable medium stores executable code, which, when executed by a processor, causes the processor to: capture an image of a finder pattern using a camera; locate a predetermined point within the finder pattern; use the predetermined point to identify multiple boundary points on a perimeter associated with the finder pattern; identify fitted boundary lines based on the multiple boundary points; and locate feature points using the fitted boundary lines.

公开(公告)号：US20190158857A1

公开(公告)日：2019-05-23

申请号：US16255670

申请日：2019-01-23

Applicant: Texas Instruments Incorporated

Inventor： Woo-Shik Kim ,  Do-Kyoung Kwon

IPC: H04N19/30 ,  H04N19/182 ,  H04N19/463 ,  H04N19/82 ,  H04N19/00

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.

公开(公告)号：US09363498B2

公开(公告)日：2016-06-07

申请号：US13675797

申请日：2012-11-13

Applicant: Texas Instruments Incorporated

Inventor： Ming-Jun Chen ,  Do-Kyoung Kwon

IPC: H04N13/04 ,  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。

公开(公告)号：US20140334558A1

公开(公告)日：2014-11-13

申请号：US14338693

申请日：2014-07-23

Applicant: TEXAS INSTRUMENTS INCORPORATED

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

IPC: H04N19/86 ,  H04N19/91 ,  H04N19/80

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.

Abstract translation: 提供了一种用于视频编码器中的采样自适应偏移（SAO）滤波和SAO参数信令的方法，其包括确定重构图像的最大编码单元（LCU）的SAO参数，其中SAO参数包括SAO滤波器类型的指示符，以及 多个SAO偏移量，根据SAO参数对重建图像应用SAO滤波，以及对编码视频比特流中的重构图像的每个LCU进行LCU特定SAO信息的熵编码，其中熵编码的LCU特定SAO信息用于 LCU与编码视频比特流中的LCU的熵编码数据进行交织。 确定SAO参数可以包括根据SAO预测协议确定对于每个LCU进行熵编码的LCU特定SAO信息。

公开(公告)号：US20140301465A1

公开(公告)日：2014-10-09

申请号：US14229839

申请日：2014-03-29

Applicant: Texas Instruments Incorporated

Inventor： Do-Kyoung Kwon ,  Madhukar Budagavi

IPC: H04N19/51 ,  H04N19/583

CPC classification number: 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.

Abstract translation: 提供了一种用于从编码视频比特流解码编码的像素块的方法，包括从编码比特流解码与编码的像素块对应的块向量，验证块向量指示搜索区域中的重构像素块 包括包括所述经编码的像素块和所述LCU的N个相邻的重建LCU的最大编码单元（LCU）的重建像素，以及对编码的像素块进行解码，其中所述重构像素块被用作编码块的预测器 的像素。

公开(公告)号：US20130114909A1

公开(公告)日：2013-05-09

申请号：US13671722

申请日：2012-11-08

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Woo-Shik Kim ,  Do-Kyoung Kwon

IPC: H04N7/26

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。