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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：US11102405B2
公开(公告)日：2021-08-24
申请号：US16859539
申请日：2020-04-27
Applicant: Texas Instruments Incorporated
Inventor： Janice Shuay-Ann Pan , Vikram VijayanBabu Appia
IPC: H04N5/232 , B60R1/00 , H04N13/111 , H04N13/128 , H04N13/271 , H04N7/18 , H04N13/246 , H04N13/239 , H04N5/445
Abstract: A rear-stitched view panorama (RSVP) system is provided that includes at least one processor and a memory storing software instructions that, when executed by the least one processor, cause the RSVP system to compute a disparity map for a left center rear image and a right center rear image captured by a stereo camera mounted on a rear of a vehicle, transform a right rear image, a left rear image, a reference center rear image, and the disparity map to a virtual world view, the right rear image and left rear image captured by respective right and left cameras mounted on the vehicle, compute an optimal left seam and an optimal right seam based on the transformed disparity map, and stitch the transformed images based on respective optimal seams to generate a panorama.
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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：US10785463B2
公开(公告)日：2020-09-22
申请号：US14322887
申请日：2014-07-02
Applicant: Texas Instruments Incorporated
Inventor： Vikram VijayanBabu Appia , Ibrahim Ethem Pekkucuksen
IPC: H04N13/106 , G06T3/40 , H04N13/243 , H04N13/282 , H04N13/25 , H04N13/00
Abstract: A method of image processing in a structured light imaging device is provided that includes capturing a plurality of images of a scene into which a structured light pattern is projected by a projector in the structured light imaging device, extracting features in each of the captured images, finding feature matches between a reference image of the plurality of captured images and each of the other images in the plurality of captured images, rectifying each of the other images to align with the reference image, wherein each image of the other images is rectified based on feature matches between the image and the reference image, combining the rectified other images and the reference image using interpolation to generate a high resolution image, and generating a depth image using the high resolution image.
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公开(公告)号：US20180357502A1
公开(公告)日：2018-12-13
申请号：US16108472
申请日：2018-08-22
Applicant: Texas Instruments Incorporated
Inventor： Vikram VijayanBabu Appia
CPC classification number: G06K9/2036 , G01C11/025 , G06K9/00201 , G06K9/50 , G06T7/11 , G06T7/136 , G06T7/521 , 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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Patent Agency Ranking
公开(公告)号：US20180191954A1
公开(公告)日：2018-07-05
申请号：US15661844
申请日：2017-07-27
Applicant: Texas Instruments Incorporated
Inventor： Janice Shuay-Ann Pan , Vikram VijayanBabu Appia
CPC classification number: H04N5/23238 , B60R1/00 , B60R2300/105 , B60R2300/107 , B60R2300/303 , B60R2300/8046 , B60R2300/8066 , H04N5/44504 , H04N7/181 , H04N13/111 , H04N13/128 , H04N13/239 , H04N13/246 , H04N13/271
Abstract: A rear-stitched view panorama (RSVP) system is provided that includes at least one processor and a memory storing software instructions that, when executed by the least one processor, cause the RSVP system to compute a disparity map for a left center rear image and a right center rear image captured by a stereo camera mounted on a rear of a vehicle, transform a right rear image, a left rear image, a reference center rear image, and the disparity map to a virtual world view, the right rear image and left rear image captured by respective right and left cameras mounted on the vehicle, compute an optimal left seam and an optimal right seam based on the transformed disparity map, and stitch the transformed images based on respective optimal seams to generate a panorama.
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公开(公告)号：US20150062558A1
公开(公告)日：2015-03-05
申请号：US14478858
申请日：2014-09-05
Applicant: Texas Instruments Incorporated
Inventor： Sanjeev Jagannatha Koppal , Vikram VijayanBabu Appia
IPC: G01S17/89
CPC classification number: G01S17/89 , G01B11/2527 , G01S17/46
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.
Abstract translation: 提供了一种用于计算包括飞行时间（TOF）传感器和投影仪的结构化光成像系统中的场景的深度图的方法，其包括使用所述场景的多个高频相移结构光图像捕获 在所述结构化光成像系统中的相机，与所述多个高频相移结构光图像的拍摄同时生成使用所述TOF传感器的所述场景的飞行时间（TOF）深度图像，并且计算 来自多个高频相移结构光图像的深度图，其中TOF深度图像用于相位展开。
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公开(公告)号：US20150022644A1
公开(公告)日：2015-01-22
申请号：US14322741
申请日：2014-07-02
Applicant: Texas Instruments Incorporated
Inventor： Vikram VijayanBabu Appia
IPC: H04N13/02
CPC classification number: H04N13/271 , H04N13/254
Abstract: A method of depth map optimization using an adaptive structured light pattern is provided that includes capturing, by a camera in a structured light imaging device, a first image of a scene into which a pre-determined structured light pattern is projected by a projector in the structured light imaging device, generating a first disparity map based on the captured first image and the structured light pattern, adapting the structured light pattern based on the first disparity map to generate an adaptive pattern, wherein at least one region of the structured light pattern is replaced by a different pattern, capturing, by the camera, a second image of the scene into which the adaptive pattern is projected by the projector, generating a second disparity map based on the captured second image and the adaptive pattern, and generating a depth image using the second disparity map.
Abstract translation: 提供了使用自适应结构光图案的深度图优化方法，其包括通过结构化光成像装置中的相机捕获由投影仪在其中投射的预定结构光图案的场景的第一图像 结构化光成像装置，基于所捕获的第一图像和结构光图案生成第一视差图，基于第一视差图适配结构化光图案以生成自适应图案，其中，结构化光图案的至少一个区域为 由不同的图案代替，通过相机捕获由投影仪投影自适应图案的场景的第二图像，基于所捕获的第二图像和自适应图案生成第二视差图，并生成深度图像 使用第二个视差图。
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公开(公告)号：US20150022632A1
公开(公告)日：2015-01-22
申请号：US14312549
申请日：2014-06-23
Applicant: Texas Instruments Incorporated
Inventor： Vikram VijayanBabu Appia
CPC classification number: H04N13/254 , G01B11/2513 , G06T7/40 , G06T7/521 , G06T2207/20016 , H04N13/271 , H04N2013/0081
Abstract: A method of image processing in a structured light imaging device 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 in the structured light imaging system, and wherein the captured image includes a pre-determined hierarchical binary pattern projected into the scene by the projector, wherein the pre-determined hierarchical binary pattern was formed by iteratively scaling a lower resolution binary pattern to multiple successively higher resolutions, rectifying the captured image to generated a rectified captured image, extracting a binary image from the rectified captured image at full resolution and at each resolution used to generate the pre-determined hierarchical binary pattern, and using the binary images to generate a depth map of the captured image.
Abstract translation: 提供了一种结构化光成像装置中的图像处理方法，包括接收场景的拍摄图像，其中所述拍摄图像由所述结构化光成像系统中的投影仪 - 摄像机对的相机捕获，并且其中所述捕获图像 包括通过投影仪投影到场景中的预定的分层二进制图案，其中通过将较低分辨率二进制图案迭代地缩放到多个连续更高的分辨率来形成预定的分层二进制图案，整流所捕获的图像以产生经整流的捕获图像 以全分辨率和用于产生预定分层二进制图案的每个分辨率从整流后的拍摄图像中提取二进制图像，并使用二进制图像生成捕获图像的深度图。
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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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