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公开(公告)号：US11823404B2
公开(公告)日：2023-11-21
申请号：US17331084
申请日：2021-05-26
Applicant: Texas Instruments Incorporated
Inventor： Vikram Vijayanbabu Appia
CPC classification number: G06T7/521 , G01C11/025 , G06T7/11 , G06T7/136 , G06V20/64 , G06T2207/20012
Abstract: A method of image processing in a structured light imaging system is provided that includes receiving a captured image of a scene, wherein the captured image is captured by a camera of a projector-camera pair, and wherein the captured image includes a binary pattern projected into the scene by the projector, applying a filter to the rectified captured image to generate a local threshold image, wherein the local threshold image includes a local threshold value for each pixel in the rectified captured image, and extracting a binary image from the rectified captured image wherein a value of each location in the binary image is determined based on a comparison of a value of a pixel in a corresponding location in the rectified captured image to a local threshold value in a corresponding location in the local threshold image.
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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：US11867500B2
公开(公告)日：2024-01-09
申请号：US16920832
申请日：2020-07-06
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Sanjeev Jagannatha Koppal , Vikram Vijayanbabu Appia
IPC: G01B11/25 , G01S17/46 , G01S17/894
CPC classification number: G01B11/2527 , G01S17/46 , G01S17/894
Abstract: A method for computing a depth map of a scene in a structured light imaging system including a time-of-flight (TOF) sensor and a projector is provided that includes capturing a plurality of high frequency phase-shifted structured light images of the scene using a camera in the structured light imaging system, generating, concurrently with the capturing of the plurality of high frequency phase-shifted structured light images, a time-of-flight (TOF) depth image of the scene using the TOF sensor, and computing the depth map from the plurality of high frequency phase-shifted structured light images wherein the TOF depth image is used for phase unwrapping.
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公开(公告)号：US11303807B2
公开(公告)日：2022-04-12
申请号：US17361433
申请日：2021-06-29
Applicant: TEXAS INSTRUMENTS INCORPORATED
Abstract: A method for generating a surround view (SV) image for display in a view port of an SV processing system is provided that includes capturing, by at least one processor, corresponding images of video streams from each camera of a plurality of cameras and generating, by the at least one processor, the SV image using ray tracing for lens remapping to identify coordinates of pixels in the images corresponding to pixels in the SV image.
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