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11.发明申请公开(公告)号：US20210203979A1
公开(公告)日：2021-07-01
申请号：US16866647
申请日：2020-05-05
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aishwarya DUBEY , Shashank DABRAL , Veeramanikandan RAJU
IPC: H04N19/557 , H04N19/577 , H04N19/567 , G01S17/86 , G01S17/89
Abstract: Frames from an image stream or streams are processed by independently operating digital signal processors (DSPs), with only frame checking microprocessors operating in a lockstep mode. In one example, two DSP are operating on alternate frames. Each DSP processes the frames and produces prediction values for the next frame. The lockstep microprocessors develop their own next frame prediction. The lockstep processors compare issued frames and previously developed predicted frames for consistency. If the predictions are close enough, the issued frame passes the test. The lockstep processors then compare the issued frame to the preceding two frames for a similar consistency check. If the prior frames are also close enough, the issued frame is acceptable. In another example, hardware checkers are provided to compare the present frame with a larger number of prior frames. The hardware checkers provide comparison results to the lockstep processors to compare against allowable variation limits.
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公开(公告)号：US20210075959A1
公开(公告)日：2021-03-11
申请号：US16690906
申请日：2019-11-21
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Shashank DABRAL , Aishwarya DUBEY , Martin Fritz MUELLER
Abstract: Techniques including obtaining a first location of a vehicle, the vehicle having one or more cameras disposed about the vehicle, and wherein each camera is associated with a physical camera pose indicating where each camera is located with respect to the vehicle, capturing, by a first camera, a first image of a first area, associating the first image with the first location of the vehicle when the first image was captured, moving the vehicle in a direction so that the first area is no longer within a field of view of the first camera, obtaining a second location of the vehicle, determining a temporal camera pose based on the physical camera pose of the first camera and the second location of the vehicle, and rendering a view of the first area based on the temporal camera pose and the first image.
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公开(公告)号：US20180192020A1
公开(公告)日：2018-07-05
申请号：US15395001
申请日：2016-12-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Mihir Narendra MODY , Shashank DABRAL , Rajasekhar ALLU , Niraj NANDAN
CPC classification number: H04N9/045 , G06T1/20 , H04N9/04515 , H04N9/67 , H04N2209/046
Abstract: An image signal processor includes a first matrix processing circuit, a post processing circuit, a second matrix processing circuit, and a split visual and analytics circuit. The first matrix processing circuit is configured to receive a plurality of component images generated based on an image captured by an image sensor and generate a plurality of first matrix outputs based on the plurality of component images. The post processing circuit is configured to perform color conversion on the plurality of first matrix outputs to generate a first luminance component of the image and a chrominance component of the image. The second matrix processing circuit is configured to perform color conversion on the plurality of first matrix outputs to generate a second luminance component of the image and a saturation component of the image. The split visual and analytics circuit is configured to generate visual and analytic data of the image.
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公开(公告)号：US20230169689A1
公开(公告)日：2023-06-01
申请号：US17538268
申请日：2021-11-30
Applicant: Texas Instruments Incorporated
Inventor： Gang HUA , Mihir Narendra MODY , Niraj NANDAN , Shashank DABRAL , Rajasekhar Reddy ALLU , Denis Roland BEAUDOIN
CPC classification number: G06T7/90 , G06T1/20 , G06T2207/20208 , G06T2207/10024
Abstract: Techniques for image processing including receiving input image data, wherein the input image data includes data associated with a clear color channel, receiving a color offset value associated with a color channel, wherein color values for the color channel are not provided in the input image data, based on the color offset value, generating intermediate estimated color values for the color channel, wherein generating the intermediate estimated color values includes: clipping color values that have a magnitude greater than the color offset value, and adjusting color values that have a magnitude less than the color offset value based on the color offset value, applying a color correction function to the intermediate estimated color values based on the color offset value to determine color corrected estimated color values, and outputting the color corrected estimated color values.
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Patent Agency Ranking
公开(公告)号：US20230086775A1
公开(公告)日：2023-03-23
申请号：US18072813
申请日：2022-12-01
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Mihir Narendra MODY , Shashank DABRAL , Rajasekhar ALLU , Niraj NANDAN
Abstract: An image signal processor includes a first matrix processing circuit, a post processing circuit, a second matrix processing circuit, and a split visual and analytics circuit. The first matrix processing circuit is configured to receive a plurality of component images generated based on an image captured by an image sensor and generate a plurality of first matrix outputs based on the plurality of component images. The post processing circuit is configured to perform color conversion on the plurality of first matrix outputs to generate a first luminance component of the image and a chrominance component of the image. The second matrix processing circuit is configured to perform color conversion on the plurality of first matrix outputs to generate a second luminance component of the image and a saturation component of the image. The split visual and analytics circuit is configured to generate visual and analytic data of the image.
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公开(公告)号：US20220030202A1
公开(公告)日：2022-01-27
申请号：US17497560
申请日：2021-10-08
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Mihir Narendra MODY , Shashank DABRAL , Rajasekhar ALLU , Niraj NANDAN
Abstract: An image signal processor includes a first matrix processing circuit, a post processing circuit, a second matrix processing circuit, and a split visual and analytics circuit. The first matrix processing circuit is configured to receive a plurality of component images generated based on an image captured by an image sensor and generate a plurality of first matrix outputs based on the plurality of component images. The post processing circuit is configured to perform color conversion on the plurality of first matrix outputs to generate a first luminance component of the image and a chrominance component of the image. The second matrix processing circuit is configured to perform color conversion on the plurality of first matrix outputs to generate a second luminance component of the image and a saturation component of the image. The split visual and analytics circuit is configured to generate visual and analytic data of the image.
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公开(公告)号：US20210209719A1
公开(公告)日：2021-07-08
申请号：US16847864
申请日：2020-04-14
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Mihir Narendra MODY , Niraj NANDAN , Rajat SAGAR , Shashank DABRAL , Anthony LELL , Brijesh JADAV
Abstract: A reconfigurable image processing pipeline includes an image signal processor (ISP), a control processor, and a local memory. ISP processes raw pixel data for a frame based on an image processing parameter and provides lines of processed pixel data to control processor via a first interface. For each region of interest (ROI) in the frame, ISP generates auto-exposure and auto-white balance (2A) statistics based on the lines for the ROI and writes them to the local memory via a second interface. Control processor reads 2A statistics from the local memory, determines the image processing parameter based on them, and provides the image processing parameter to ISP. ISP also generates an integer N bin histogram for control processor, which sums a portion of the N total bins and compares the summed bin count to a lighting transition threshold. The image processing parameter is further based on the comparison.
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公开(公告)号：US20210092327A1
公开(公告)日：2021-03-25
申请号：US17115378
申请日：2020-12-08
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Shashank DABRAL , Aishwarya DUBEY , Martin Fritz MUELLER
Abstract: Techniques including obtaining a first location of a vehicle, the vehicle having two or more cameras disposed about the vehicle, each camera associated with a physical camera pose, capturing, by a first camera, a first image of a first area in a first field of view, associating the first image with the first location of the vehicle when the first image was captured, moving the vehicle in a direction so that the first area is in an expected second field of view of a second camera, wherein the second camera is not capturing images, obtaining a second location of the vehicle, determining a temporal camera pose based on a first physical camera pose, a second physical camera pose, and the second location of the vehicle, and rendering a view of the first area from the expected second field of view of the second camera based on the first image.
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公开(公告)号：US20210027422A1
公开(公告)日：2021-01-28
申请号：US16911579
申请日：2020-06-25
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Shashank DABRAL , Mihir Narendra MODY , Denis BEAUDOIN , Niraj NANDAN , Gang HUA
Abstract: A method of de-mosaicing pixel data from an image processor includes generating a pixel block that includes a plurality of image pixels. The method also includes determining a first image gradient between a first set of pixels of the pixel block and a second image gradient between a second set of pixels of the pixel block. The method also includes determining a first adaptive threshold value based on intensity of a third set of pixels of the pixel block. The pixels of the third set of pixels are adjacent to one another. The method also includes filtering the pixel block in a vertical, horizontal, or neutral direction based on the first and second image gradients and the first adaptive threshold value utilizing a plurality of FIR filters to generate a plurality of component images.
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