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1.发明授权公开(公告)号：US10523865B2
公开(公告)日：2019-12-31
申请号：US15298214
申请日：2016-10-19
Applicant: Texas Instruments Incorporated
Inventor： Vikram VijayanBabu Appia , Sujith Shivalingappa , Brijesh Rameshbhai Jadav , Hemant Hariyani , Shashank Dabral , Mayank Mangla
IPC: H04N9/47 , H04N7/18 , H04N5/232 , G06T3/00 , H04N5/247 , G06T15/20 , G06T15/06 , B60R1/00 , H04N5/357 , H04N9/04
Abstract: A method for displaying a surround view on a single display screen is disclosed. A plurality of image frames for a particular time may be received from a corresponding plurality of cameras. A viewpoint warp map corresponding to a predetermined first virtual viewpoint may be selected, wherein the viewpoint warp map defines a source pixel location in the plurality of image frames for each output pixel location in the display screen. The warp map was predetermined offline and stored for later use. An output image is synthesized for the display screen by selecting pixel data for each pixel of the output image from the plurality of image frames in accordance with the viewpoint warp map. The synthesized image is then displayed on a display screen.
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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
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.
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公开(公告)号：US20210407120A1
公开(公告)日：2021-12-30
申请号：US17474489
申请日：2021-09-14
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Rajasekhar Reddy Allu , Niraj Nandan , Mihir Narendra Mody , Gang Hua , Brian Okchon Chae , Shashank Dabral , Hetul Sanghvi , Vikram VijayanBabu Appia , Sujith Shivalingappa
Abstract: An apparatus and method for geometrically correcting an arbitrary shaped input frame and generating an undistorted output frame. The method includes capturing arbitrary shaped input images with multiple optical devices and processing the images, identifying redundant blocks and valid blocks in each of the images, allocating an output frame with an output frame size and dividing the output frame into regions shaped as a rectangle, programming the apparatus and disabling processing for invalid blocks in each of the regions, fetching data corresponding to each of the valid blocks and storing in an internal memory, interpolating data for each of the regions with stitching and composing the valid blocks for the output frame and displaying the output frame on a display module.
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公开(公告)号：US20200349683A1
公开(公告)日：2020-11-05
申请号：US16930342
申请日：2020-07-16
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Rajasekhar Reddy Allu , Niraj Nandan , Mihir Narendra Mody , Gang Hua , Brian Okchon Chae , Shashank Dabral , Hetul Sanghvi , Vikram VijayanBabu Appia , Sujith Shivalingappa
Abstract: An apparatus and method for geometrically correcting a distorted input frame and generating an undistorted output frame. The apparatus includes an external memory block that stores the input frame, a counter block to compute output coordinates of the output frame for a region based on a block size of the region, a back mapping block to generate input coordinates corresponding to each of the output coordinates, a bounding module to compute input blocks corresponding to each of the input coordinates, a buffer module to fetch data corresponding to each of the input blocks, an interpolation module to interpolate data from the buffer module and a display module that receives the interpolated data for each of the regions and stitch an output image. The method includes determining the size of the output block based on a magnification data.
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5.发明申请Optimized Algorithm for Construction of Composite Video from a Set of Discrete Video Sources 审中-公开用于从一组离散视频源构建复合视频的优化算法公开(公告)号：US20160014348A1
公开(公告)日：2016-01-14
申请号：US14862406
申请日：2015-09-23
Applicant: Texas Instruments Incorporated
Inventor： Sujith Shivalingappa , Sivaraj Rajamonickam
CPC classification number: H04N5/265 , G09G5/14 , H04N21/4316 , H04N21/4622
Abstract: A method includes reading a composite video descriptor data structure and a plurality of window descriptor data structures. The composite video descriptor data structure defines a width and height of a composite video frame and each window descriptor data structure defines the starting X and Y coordinate, width and height of each constituent video window to be rendered in the composite video frame. The method further includes determining top and bottom Y coordinates for each constituent video window, as well as determining left and right X coordinates for each constituent video window. The method also includes dividing each constituent video window using the top and bottom Y coordinates to obtain Y-divided sub-windows, dividing each Y-divided sub-window using left and right X coordinates to obtain X and Y divided sub-windows, and storing X, Y coordinates of opposing corners of each X and Y divided sub-window in the storage device.
Abstract translation: 一种方法包括读取复合视频描述符数据结构和多个窗口描述符数据结构。 复合视频描述符数据结构定义复合视频帧的宽度和高度，并且每个窗口描述符数据结构定义要在复合视频帧中呈现的每个构成视频窗口的起始X和Y坐标，宽度和高度。 该方法还包括确定每个构成视频窗口的顶部和底部Y坐标，以及确定每个构成视频窗口的左和右X坐标。 该方法还包括使用顶部和底部Y坐标划分每个构成视频窗口以获得Y分割子窗口，使用左和右X坐标划分每个Y分割子窗口以获得X和Y分割子窗口，以及 将每个X和Y分割子窗口的相对角的X，Y坐标存储在存储装置中。
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Patent Agency Ranking
公开(公告)号：US12250366B2
公开(公告)日：2025-03-11
申请号：US18387206
申请日：2023-11-06
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Sujith Shivalingappa , Vikram Appia , Anand Yalgurdrao Kulkarni , Do-Kyoung Kwon
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.
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公开(公告)号：US11599975B2
公开(公告)日：2023-03-07
申请号：US16930342
申请日：2020-07-16
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Rajasekhar Reddy Allu , Niraj Nandan , Mihir Narendra Mody , Gang Hua , Brian Okchon Chae , Shashank Dabral , Hetul Sanghvi , Vikram VijayanBabu Appia , Sujith Shivalingappa
Abstract: An apparatus and method for geometrically correcting a distorted input frame and generating an undistorted output frame. The apparatus includes an external memory block that stores the input frame, a counter block to compute output coordinates of the output frame for a region based on a block size of the region, a back mapping block to generate input coordinates corresponding to each of the output coordinates, a bounding module to compute input blocks corresponding to each of the input coordinates, a buffer module to fetch data corresponding to each of the input blocks, an interpolation module to interpolate data from the buffer module and a display module that receives the interpolated data for each of the regions and stitch an output image. The method includes determining the size of the output block based on a magnification data.
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8.发明授权公开(公告)号：US11303806B2
公开(公告)日：2022-04-12
申请号：US16720528
申请日：2019-12-19
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Vikram VijayanBabu Appia , Sujith Shivalingappa , Brijesh Rameshbhai Jadav , Hemant Hariyani , Shashank Dabral , Mayank Mangla
Abstract: A method for displaying a surround view on a single display screen is disclosed. A plurality of image frames for a particular time may be received from a corresponding plurality of cameras. A viewpoint warp map corresponding to a predetermined first virtual viewpoint may be selected, wherein the viewpoint warp map defines a source pixel location in the plurality of image frames for each output pixel location in the display screen. The warp map was predetermined offline and stored for later use. An output image is synthesized for the display screen by selecting pixel data for each pixel of the output image from the plurality of image frames in accordance with the viewpoint warp map. The synthesized image is then displayed on a display screen.
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公开(公告)号：US20180184078A1
公开(公告)日：2018-06-28
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
CPC classification number: H04N17/002 , B60R1/00 , B60R2300/102 , B60R2300/105 , B60R2300/402 , G06K9/00791 , G06K9/3216 , G06K2009/2045 , G06K2009/3225 , H04N7/181
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.
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10.发明授权公开(公告)号：US09451181B2
公开(公告)日：2016-09-20
申请号：US14862406
申请日：2015-09-23
Applicant: Texas Instruments Incorporated
Inventor： Sujith Shivalingappa , Sivaraj Rajamonickam
IPC: H04N5/265 , G09G5/14 , H04N21/431 , H04N21/462
CPC classification number: H04N5/265 , G09G5/14 , H04N21/4316 , H04N21/4622
Abstract: A method includes reading a composite video descriptor data structure and a plurality of window descriptor data structures. The composite video descriptor data structure defines a width and height of a composite video frame and each window descriptor data structure defines the starting X and Y coordinate, width and height of each constituent video window to be rendered in the composite video frame. The method further includes determining top and bottom Y coordinates for each constituent video window, as well as determining left and right X coordinates for each constituent video window. The method also includes dividing each constituent video window using the top and bottom Y coordinates to obtain Y-divided sub-windows, dividing each Y-divided sub-window using left and right X coordinates to obtain X and Y divided sub-windows, and storing X, Y coordinates of opposing corners of each X and Y divided sub-window in the storage device.
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