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公开(公告)号：US11847808B2
公开(公告)日：2023-12-19
申请号：US17030113
申请日：2020-09-23
Applicant: QUALCOMM Incorporated
Inventor： Edwin Chongwoo Park , Soman Ganesh Nikhara , Bapineedu Chowdary Gummadi , Pradeep Veeramalla , Ravi Shankar Kadambala
Abstract: Methods, systems, computer-readable media, and apparatuses for region-of-interest automatic gain or exposure control are presented. One example method includes receiving an image from an image sensor, the image comprising a plurality of pixels, determining a region of interest (“ROI”) in the image, the ROI comprising a subset of the plurality of pixels in the image, determining a ROI weight for pixels in the subset of the plurality of pixels, determining statistics for the image based on the plurality of pixels in the image and the ROI weight, and adjusting a gain or exposure setting for the image sensor based on the statistics.
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公开(公告)号：US20190253682A1
公开(公告)日：2019-08-15
申请号：US16134087
申请日：2018-09-18
Applicant: QUALCOMM Incorporated
Inventor： Soman Ganesh Nikhara , Ho Sang Lee , Kyuseo Han , Pradeep Veeramalla
Abstract: Aspects of the present disclosure relate to systems and methods for performing automatic white balance (AWB). An example device may include a memory and a processor coupled to the memory. The processor may be configured to receive a first image of a scene, measure a first illuminant of the first received image, compare the first illuminant and a first illuminant value, determine the scene is changing between the first received image and a previous image based on the comparison, adjust a first AWB convergence rate to a second AWB convergence rate in response to determining the scene is changing, and converge from a first balancing factor to a second balancing factor for one or more white balance operations based on the second AWB convergence rate.
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公开(公告)号：US10038500B1
公开(公告)日：2018-07-31
申请号：US15592431
申请日：2017-05-11
Applicant: QUALCOMM Incorporated
IPC: H04B10/00 , H04B10/116 , H04B1/3827
CPC classification number: H04B10/116 , H04B1/3833
Abstract: A method of operating a device that includes an image sensor including a plurality of pixels includes: detecting visible light communication (VLC) signals with the image sensor; obtaining image data based on the VLC signals, the image data including a set of brightness components and possibly a set of chrominance components, and each brightness component of the set of brightness components being associated with a respective pixel of the plurality of pixels and (if available) each chrominance component of the set of chrominance components being associated with a respective pixel of the plurality of pixels; and decoding the set of brightness components to obtain information encoded in the VLC signals using a processor of the device without decoding, if available, the set of chrominance components.
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公开(公告)号：US20240354969A1
公开(公告)日：2024-10-24
申请号：US18304549
申请日：2023-04-21
Applicant: QUALCOMM Incorporated
Inventor： Chanchal Raj , Mayank Mishra , Pradeep Veeramalla , Sandeep Ramisetty
CPC classification number: G06T7/262 , G06T7/13 , G06T7/248 , G06V10/70 , G06T2207/10016 , G06T2207/20048
Abstract: This disclosure provides systems, methods, and devices for image signal processing that support efficient motion estimation. In a first aspect, a method of image processing includes determining first and second sets of correlation parameters for respective first and second frames, generating a transform matrix indicating motion from the first frame to the second frame in accordance with the correlation parameters, and inverting the transform matrix to produce an inverted transform matrix. Other aspects and features are also claimed and described.
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公开(公告)号：US11711613B2
公开(公告)日：2023-07-25
申请号：US17241742
申请日：2021-04-27
Applicant: QUALCOMM Incorporated
Inventor： Shang-Chih Chuang , Ron Gaizman , Pradeep Veeramalla , Shizhong Liu , Weiliang Liu , Xiaoyun Jiang , Narayana Karthik Ravirala , Jiafu Luo , Srinath Anekere Narayan , Wei Zou
IPC: H04N23/68
CPC classification number: H04N23/689 , H04N23/6812
Abstract: Image frames for computational photography may be corrected, such as through rolling shutter correction (RSC), prior to fusion of the image frames to reduce wobble and jitter artifacts present in a video sequence of HDR-enhanced image frames. First and second motion data regarding motion of the image capture device may be determined for times corresponding to the capturing of the first and second image frames, respectively. The rolling shutter correction (RSC) may be applied to the first and second image frames based on both the first and second motion data. The corrected first and second image frames may then be aligned and fused to obtain a single output image frame with higher dynamic range than either of the first or second image frames.
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Patent Agency Ranking
公开(公告)号：US10735704B2
公开(公告)日：2020-08-04
申请号：US16134087
申请日：2018-09-18
Applicant: QUALCOMM Incorporated
Inventor： Soman Ganesh Nikhara , Ho Sang Lee , Kyuseo Han , Pradeep Veeramalla
Abstract: Aspects of the present disclosure relate to systems and methods for performing automatic white balance (AWB). An example device may include a memory and a processor coupled to the memory. The processor may be configured to receive a first image of a scene, measure a first illuminant of the first received image, compare the first illuminant and a first illuminant value, determine the scene is changing between the first received image and a previous image based on the comparison, adjust a first AWB convergence rate to a second AWB convergence rate in response to determining the scene is changing, and converge from a first balancing factor to a second balancing factor for one or more white balance operations based on the second AWB convergence rate.
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公开(公告)号：US12217471B2
公开(公告)日：2025-02-04
申请号：US18511462
申请日：2023-11-16
Applicant: QUALCOMM Incorporated
Inventor： Edwin Chongwoo Park , Soman Ganesh Nikhara , Bapineedu Chowdary Gummadi , Pradeep Veeramalla , Ravi Shankar Kadambala
Abstract: Methods, systems, computer-readable media, and apparatuses for region-of-interest (ROI) automatic gain or exposure control are presented. In one example, a method includes receiving a first image from an image sensor captured with a first field of view (FOV) and comprising a first plurality of pixels, receiving a second image from the image sensor captured with a second FOV and comprising a second plurality of pixels, determining an ROI in the second image, the ROI comprising a subset of the second plurality of pixels in the second image, determining an ROI weight for the ROI in the second image, determining statistics based on the first plurality of pixels in the first image, the subset of the second plurality of pixels in the second image, and the ROI weight for the ROI in the second image, and adjusting a gain or exposure setting for the image sensor based on the statistics.
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公开(公告)号：US20220345605A1
公开(公告)日：2022-10-27
申请号：US17241742
申请日：2021-04-27
Applicant: QUALCOMM Incorporated
Inventor： Shang-Chih Chuang , Ron Gaizman , Pradeep Veeramalla , Shizhong Liu , Weiliang Liu , Xiaoyun Jiang , Narayana Karthik Ravirala , Jiafu Luo , Srinath Anekere Narayan , Wei Zou
IPC: H04N5/232
Abstract: Image frames for computational photography may be corrected, such as through rolling shutter correction (RSC), prior to fusion of the image frames to reduce wobble and jitter artifacts present in a video sequence of HDR-enhanced image frames. First and second motion data regarding motion of the image capture device may be determined for times corresponding to the capturing of the first and second image frames, respectively. The rolling shutter correction (RSC) may be applied to the first and second image frames based on both the first and second motion data. The corrected first and second image frames may then be aligned and fused to obtain a single output image frame with higher dynamic range than either of the first or second image frames.
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公开(公告)号：US20210105448A1
公开(公告)日：2021-04-08
申请号：US16592648
申请日：2019-10-03
Applicant: QUALCOMM Incorporated
Inventor： Soman Ganesh Nikhara , Ho Sang Lee , Pradeep Veeramalla , Anshul Maheshwari , Shivakumar Manda
Abstract: Methods, systems, and devices for image processing at a device are described. The present disclosure may relate to capturing a first frame of image samples and a second frame of image samples of an image sensor after capturing the first frame of image samples, determining that a white balance confidence level of the second frame does not satisfy a confidence threshold, retrieving the first frame of image samples based on determining that the white balance confidence level of the second frame does not satisfy the confidence threshold, combining at least a portion of the image samples of the first frame with the image samples of the second frame, and determining a white balance setting for the second frame based on combining at least the portion of the image samples of the first frame with the image samples of the second frame.
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公开(公告)号：US10594921B2
公开(公告)日：2020-03-17
申请号：US15963803
申请日：2018-04-26
Applicant: QUALCOMM Incorporated
Inventor： Ravi Shankar Kadambala , Micha Galor Gluskin , Soman Ganesh Nikhara , Bapineedu Chowdary Gummadi , Pradeep Veeramalla
Abstract: Methods, systems, and devices for dual phase detection auto focus (PDAF) power optimization are described. A camera device may capture a frame including a pixel array representing a scene. In some examples, each pixel of the pixel array may be a phase detection (PD) pixel having one or more values, or one or more PD pixels positioned randomly across the pixel array. The camera device may identify a configuration of the pixel array, and determine a condition of the pixel array relative to the configuration. The configuration may be a binning configuration or a frame pattern configuration, and the condition may include an illumination condition related to the pixel array representing the scene. The camera device may determine and apply a reconfiguration to at least a portion of the pixel array based on the condition of the pixel array, and determine a lens position of the camera device therewith.
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