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公开(公告)号：US11405563B2
公开(公告)日：2022-08-02
申请号：US17094052
申请日：2020-11-10
Applicant: QUALCOMM Incorporated
Inventor： Jianfeng Ren , Shizhong Liu , Weiliang Liu , Kuan-Chen Pan , Nikhil Uchil , Wei Zou
Abstract: This disclosure provides devices, methods, computer-readable medium, and means for spatial alignment transform. In some aspects, a device may perform operations including capturing a first image of a scene using a first sensor at a first zoom ratio, capturing a second image of the scene using a second sensor at a second zoom ratio, the first image having a different field-of-view (FOV) than the second image, determining a translation matrix based on one or more spatial misalignments between the first image and the second image, determining a confidence associated with the translation matrix, in response to the confidence being greater than a confidence threshold, determining a weighting factor based on the first zoom ratio, the second zoom ratio, and a current zoom ratio of the device, applying the weighting factor to the translation matrix, and warping the first image to the second image using the weighted translation matrix.
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公开(公告)号：US20220201208A1
公开(公告)日：2022-06-23
申请号：US17133221
申请日：2020-12-23
Applicant: QUALCOMM Incorporated
Inventor： Shizhong Liu , Jianfeng Ren , Weiliang Liu , Nikhil Uchil , Jincheng Huang , Sahul Madanayakanahalli Phaniraj Venkatesh , Krishnankutty Kolathappilly , Wei Zou
Abstract: Disruptions in the continuity of image frames output from an image capture device due to switching from one image sensor to another image sensor of the device may be reduced or eliminated through controlled timing for switching of the image sensors according to a predefined image sensor configuration. Operation of a multi-sensor image device according to the predefined image sensor configuration may include an appropriate selection of a source for image adjustment during the zoom level transition. The predefined image sensor configuration may define transition parameters for particular zoom ranges of the image capture device.
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公开(公告)号：US20160277650A1
公开(公告)日：2016-09-22
申请号：US14659547
申请日：2015-03-16
Applicant: QUALCOMM Incorporated
Inventor： Adarsh Hosaagrahara Nagaraja , Weiliang Liu , Shizhong Liu
CPC classification number: H04N5/2258 , G06T7/33 , G06T7/85 , G06T2207/10012 , H04N5/217 , H04N5/2253 , H04N5/23212 , H04N17/002 , H04N2101/00
Abstract: A method for generating image calibration data at an electronic device having multiple cameras includes capturing a first image of a first scene at a first time using a first camera at the electronic device. The method also includes capturing a second image of a second scene at the first time using a second camera at the electronic device. A portion of the first scene overlaps a portion of the second scene. The method further includes generating the image calibration data based on the first image and based on the second image.
Abstract translation: 一种用于在具有多个照相机的电子设备上产生图像校准数据的方法，包括使用电子设备上的第一照相机在第一时间捕获第一场景的第一图像。 该方法还包括在电子设备处使用第二相机在第一时间捕获第二场景的第二图像。 第一场景的一部分与第二场景的一部分重叠。 该方法还包括基于第一图像并基于第二图像生成图像校准数据。
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公开(公告)号：US20250111525A1
公开(公告)日：2025-04-03
申请号：US18729081
申请日：2022-03-25
Applicant: QUALCOMM Incorporated
Inventor： Wen-Chun Feng , Jie Song , Yu-Ren Lai , Shizhong Liu , Weiliang Liu
Abstract: This disclosure provides systems, methods, and devices for image processing. In a first aspect, a method of image processing includes receiving first image data from a first camera of an image capture device, wherein the first camera is different from a second camera of the image capture device; determining a first portion of the first image data; transforming the first portion of the first image data with a first strength based on an alignment difference between the first camera and the second camera; transforming a second portion of the first image data with a second strength based on the alignment difference between the first camera and the second camera; and determining a first output image frame based on the first image data after transforming the first portion of the first image data and transforming the second portion of the first image data. Other aspects and features are also described.
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公开(公告)号：US11825207B1
公开(公告)日：2023-11-21
申请号：US17734950
申请日：2022-05-02
Applicant: QUALCOMM Incorporated
Inventor： Narayana Karthik Ravirala , Chanchal Raj , Shizhong Liu , Weiliang Liu , Ron Gaizman , Lianming Shi
IPC: H04N23/73 , H04N23/741 , H04N5/14
CPC classification number: H04N23/73 , H04N5/144 , H04N23/741
Abstract: The present disclosure generally relates to exposure control for image capture devices. One example method generally includes receiving sensor data indicating a movement associated with an image capture device capturing a first frame and a second frame, wherein the first frame is associated with a higher exposure setting as compared to the second frame; predicting, based on the sensor data, a shift for aligning one or more features of the first frame and one or more features of the second frame; applying the shift to align the one or more features of the first frame and the one or more features of second frame; and generating a frame output at least in part by combining at least a portion of the first frame with at least a portion of the second frame.
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Patent Agency Ranking
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：US20220292630A1
公开(公告)日：2022-09-15
申请号：US17201660
申请日：2021-03-15
Applicant: QUALCOMM Incorporated
Inventor： Shizhong Liu , Jincheng Huang , Weiliang Liu , Jianfeng Ren , Sahul Madanayakanahalli Phaniraj Venkatesh
Abstract: Artefacts in a sequence of image frames may be reduced or eliminated through modification of an input image frame to match another image frame in the sequence, such as by geometrically warping to generate a corrected image frame with a field of view matched to another frame in sequence of frames with the image frame. The warping may be performed based on a model generated from data regarding the multi-sensor device. The disparity between image frames may be modeled based on image captures from the first and second image sensor for scenes at varying depths. The model may be used to predict disparity values for captured images, and those predicted disparity values used to reduce artefacts resulting from image sensor switching. The predicted disparity values may be used in image conditions resulting in erroneous actual disparity values.
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公开(公告)号：US20220150420A1
公开(公告)日：2022-05-12
申请号：US17094052
申请日：2020-11-10
Applicant: QUALCOMM Incorporated
Inventor： Jianfeng Ren , Shizhong Liu , Weiliang Liu , Kuan-Chen Pan , Nikhil Uchil , Wei Zou
Abstract: This disclosure provides devices, methods, computer-readable medium, and means for spatial alignment transform. In some aspects, a device may perform operations including capturing a first image of a scene using a first sensor at a first zoom ratio, capturing a second image of the scene using a second sensor at a second zoom ratio, the first image having a different field-of-view (FOV) than the second image, determining a translation matrix based on one or more spatial misalignments between the first image and the second image, determining a confidence associated with the translation matrix, in response to the confidence being greater than a confidence threshold, determining a weighting factor based on the first zoom ratio, the second zoom ratio, and a current zoom ratio of the device, applying the weighting factor to the translation matrix, and warping the first image to the second image using the weighted translation matrix.
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公开(公告)号：US20210360172A1
公开(公告)日：2021-11-18
申请号：US17009285
申请日：2020-09-01
Applicant: QUALCOMM Incorporated
Inventor： Weiliang Liu , Shizhong Liu , Tao Ma , Jianfeng Ren
Abstract: In general, techniques are described regarding initiating a recursive blending of a plurality of frames following a camera transition. One or more processors may, subsequent to a transition from a first camera mode to a second camera mode, blend one or more pixels of a first frame with one or more pixels of a second frame to produce a first blended frame, the first frame captured via a first camera, and the second frame captured via a second camera. The one or more processors may then output the first blended frame.
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公开(公告)号：US09538065B2
公开(公告)日：2017-01-03
申请号：US14244595
申请日：2014-04-03
Applicant: QUALCOMM Incorporated
Inventor： Adarsh Hosaagrahara Nagaraja , Weiliang Liu , Shizhong Liu
CPC classification number: H04N5/23212 , G06K9/46 , G06K2009/4666 , H04N5/23216 , H04N5/23219 , H04N5/23293 , H04N5/2356
Abstract: Systems and methods for multi-focus imaging are disclosed. An imaging system may suggest multiple regions of interest to a user based on a preview mode of a scene of interest. The user may select a plurality of the suggested regions of interest for a multi-focus image. The imaging system calculates the autofocus parameters for each of the multiple regions of interest and captures single images of each of the regions of interest when the shutter button of the camera is pressed. The imaging system then generates a multi-focus image from the multiple images.
Abstract translation: 公开了用于多焦点成像的系统和方法。 成像系统可以基于感兴趣的场景的预览模式来向用户建议感兴趣的多个区域。 用户可以为多焦点图像选择多个建议的兴趣区域。 成像系统计算感兴趣的多个区域中的每一个的自动聚焦参数，并且当按下照相机的快门按钮时捕获每个感兴趣区域的单个图像。 然后，成像系统从多个图像生成多焦点图像。
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