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公开(公告)号：US10992876B2
公开(公告)日：2021-04-27
申请号：US15296152
申请日：2016-10-18
Applicant: Texas Instruments Incorporated
Inventor： Mayank Mangla , Shashank Dabral , Peter Labaziewicz
IPC: H04N5/235 , H01L27/146 , H04N5/225 , G06T5/50
Abstract: A method of WDR imaging. Exposure times (ETs) are set for first and second frames for an image sensor to avoid second frame saturating by setting a second ET>1/a PWM frequency applied to an LED illuminating a scene to generate second longer ET pixel data (PD). The first frame has first PD and a first ET
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公开(公告)号：US10944911B2
公开(公告)日：2021-03-09
申请号：US14920932
申请日：2015-10-23
Applicant: Texas Instruments Incorporated
Inventor： Shashank Dabral
Abstract: Methods and integrated circuits to process image data from single or multiple digital overlap (DOL) wide dynamic range (WDR) sensors, in which first received pixel data associated with a first exposure of a sensor image is stored in a DDR memory circuit, second received pixel data associated with a second exposure of the image is stored in the first buffer, third received pixel data associated with a third exposure of the image is stored in a second buffer, and fourth received pixel data associated with a fourth exposure of the image is provided to a merge circuit, and merged pixel data is stored in a dynamically partitioned line buffer for processing by an image pipeline circuit to facilitate interfacing multiple DOL WDR sensors in an interleaved fashion.
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公开(公告)号：US20210049389A1
公开(公告)日：2021-02-18
申请号：US17086958
申请日：2020-11-02
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Mayank Mangla , Shashank Dabral
Abstract: Digital mirror systems for vehicles and methods of operating the same are disclosed. An example vehicle control system includes:a driver monitoring system including a head position determiner to determine at least one of a location of a head, an orientation of the head, or an eye gaze point of the head; a digital mirror system including a region-of-interest (ROI) detector to identify an ROI based on the at least one of the location of the head, the orientation of the head, or the eye gaze point of the head, and a cropper to extract a portion of a first image corresponding to the ROI to form a second image, the first image representing an area exterior to the vehicle; and a display within an interior area of the vehicle to present the second image
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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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公开(公告)号：US20190130534A1
公开(公告)日：2019-05-02
申请号：US16178200
申请日：2018-11-01
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Mihir Narendra Mody , Shashank Dabral , Jesse Gregory Villarreal , William Wallace , Niraj Nandan
Abstract: A method for filtering noise for imaging includes receiving an image frame having position and range data. A filter size divides the frame into filter windows for processing each of the filter windows. For the first pixel, a space to the center pixel and a range difference between this pixel and the center pixel is determined and used for choosing a selected weight from weights in a 2D weight LUT including weighting for space and range difference, a filtered range value is calculated by applying the selected 2D weight to the pixel, and the range, filtered range value and selected 2D weight are summed. The determining, choosing, calculating and summing are repeated for at least the second pixel. A total sum of contributions from the first and second pixel are divided by the sum of selected 2D weights to generate a final filtered range value for the center pixel.
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Patent Agency Ranking
公开(公告)号：US20190104245A1
公开(公告)日：2019-04-04
申请号：US16208313
申请日：2018-12-03
Applicant: Texas Instruments Incorporated
Inventor： Shashank Dabral , Rajasekhar Reddy Allu
Abstract: Disclosed examples include integrated circuits, merge circuits and methods of processing multiple-exposure image data, in which a single pre-processing circuit is used for pre-processing first input exposure data associated with a first exposure of the image, and then for pre-processing second input exposure data associated with a second exposure of the image, and the first and second pre-processed exposure data are merged to generate merged image data for tone mapping and other post-processing. An example merge circuit includes a configurable gain circuit to apply a gain to the first and/or second exposure data, as well as a configurable weighting circuit with a weight calculation circuit and a motion adaptive filter circuit to compute a first and second weight values for merging the pre-processed first and second exposure data.
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公开(公告)号：US12120288B2
公开(公告)日：2024-10-15
申请号：US17538661
申请日：2021-11-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Shashank Dabral , Aishwarya Dubey , Gowtham Abhilash Tammana
CPC classification number: H04N17/002 , G06T1/20 , H04N7/181 , H04N23/64 , H04N23/80 , H04N23/90 , G06T2200/28
Abstract: A technique including capturing, by one or more cameras of a set of cameras disposed about a vehicle, one or more images, wherein a surround view system of the vehicle is configured to render a surround view image using a first hardware accelerator based on the one or more images, determining that a first hardware accelerator is unavailable, and rendering the surround view image using a second hardware accelerator based on the captured one or more images.
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公开(公告)号：US11995806B2
公开(公告)日：2024-05-28
申请号：US17080884
申请日：2020-10-27
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
CPC classification number: G06T5/80 , G06T3/047 , G06T3/18 , G06T2200/32 , G06T2207/10024 , G06T2207/20021
Abstract: A method for geometrically correcting a distorted input frame and generating an undistorted output frame includes capturing and storing an input frame in an external memory, allocating an output frame with an output frame size and dividing the output frame into output blocks, computing a size of the input blocks in the input image corresponding to each output blocks, checking if the size of the input blocks is less than the size of the internal memory and if not dividing until the required input block size of divided sub blocks is less than the size of the internal memory, programming an apparatus with input parameters, fetching the input blocks into an internal memory, processing each of the divided sub blocks sequentially and processing the next output block in step until all the output blocks are processed; and composing the output frame for each of the blocks in the output frame.
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公开(公告)号：US11836888B2
公开(公告)日：2023-12-05
申请号：US17129818
申请日：2020-12-21
Applicant: Texas Instruments Incorporated
Inventor： Shashank Dabral , Gang Hua , Mihir Narendra Mody
IPC: G06T3/40 , H04N5/33 , H01L27/146 , H04N25/13 , H04N25/131
CPC classification number: G06T3/4015 , H01L27/14621 , H01L27/14649 , H04N5/33 , H04N25/134 , H04N25/131
Abstract: A method for processing RGB-Infrared (RGB-IR) sensor data is provided that includes receiving a raw RGB-IR image, determining whether to process the raw RGB-IR image in day mode or night mode, generating, when day mode is determined, an infrared (IR) subtracted raw Bayer image from the raw RGB-IR image and processing the IR subtracted raw Bayer image in an image signal processor (ISP), and generating, when night mode is determined, an IR image from the raw RGB-IR image.
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公开(公告)号：US11781723B2
公开(公告)日：2023-10-10
申请号：US17849472
申请日：2022-06-24
Applicant: Texas Instruments Incorporated
Inventor： Zhongyan Sheng , Shashank Dabral , Ganapathy Sivakumar
IPC: F21S41/141 , F21S41/63 , F21S41/25 , F21V23/04 , F21S41/153 , F21W102/13
CPC classification number: F21S41/63 , F21S41/153 , F21S41/25 , F21V23/0442 , F21W2102/13
Abstract: An example includes a system, having: an illumination source configured to produce illumination light; and a spatial light modulator (SLM) optically coupled to the illumination source, the SLM comprising an array of picture elements. The SLM is configured to: receive the illumination light; direct, by a first portion of the picture elements, on state light in a first direction; and direct, by a second portion of the picture elements, off state light in a second direction. The example system includes imaging optics optically coupled to the SLM, the imaging optics configured to receive the on state light from the SLM and to project an image as an image portion of a beam; and non-imaging optics optically coupled to the SLM, the non-imaging optics configured to receive the off state light from the SLM and to project the off state light as part of the beam.
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