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11.发明授权公开(公告)号：US10855904B2
公开(公告)日：2020-12-01
申请号：US16363113
申请日：2019-03-25
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Lifu Yu
IPC: H04N5/232 , H01L27/146 , H04N5/341
Abstract: A focusing method includes obtaining a first image, determining a focusing area from the first image, performing a digital zoom process on the focusing area according to a zoom-in ratio to obtain a second image, and performing a focus process on the second image.
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公开(公告)号：US10055872B2
公开(公告)日：2018-08-21
申请号：US15431832
申请日：2017-02-14
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Zisheng Cao , Mingyu Wang , Lifu Yu
CPC classification number: G06T11/60 , G06T5/007 , G06T7/90 , H04N5/2352 , H04N5/2355 , H04N9/04
Abstract: A system for high dynamic range (HDR) imaging and methods for making and using same is disclosed. An HDR module in a camera initializes a set of lookup tables (LUTs) in YUV color space based on exposure configurations of a set of images taken as HDR imaging. The HDR module calculates weights of luminance Y components of the set of images in YUV color space. Based on the calculated weights, the HDR module blends the Y component of the set of images to generate blended Y components. The HDR module combines the blended Y components with corresponding UV components to generate a single image in YUV space. Thereby, the HDR module advantageously combines a set of images into a blended HDR image with only blending the Y component of the set of images.
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公开(公告)号：US09509898B2
公开(公告)日：2016-11-29
申请号：US14972889
申请日：2015-12-17
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Lifu Yu , Zisheng Cao
CPC classification number: H04N5/23212 , G02B7/09 , H04N5/3696
Abstract: A system for automatic focusing with a lens and methods for making and use the same are provided. When performing a focusing operation, a controller calculates a focus measure value for each lens position of a plurality of lens positions. The focus measure values are calculated based on each of the window evaluation values and a respective weight for image focusing windows within a set of image focusing windows. The controller then compares the calculated focus measure values of the plurality of lens positions in order to select an optimal lens position. The set of image focusing windows can be selected based on one or more sets of image focusing window selection rules derived from statistical data. In addition, the respective weights for image focusing windows can also be calculated based on the statistical data.
Abstract translation: 提供了一种用于自动聚焦透镜的系统及其制造和使用方法。 当进行聚焦操作时，控制器计算多个透镜位置的每个透镜位置的焦点测量值。 基于每个窗口评估值和一组图像聚焦窗口内的图像聚焦窗口的相应权重来计算焦点测量值。 控制器然后比较所计算的多个透镜位置的焦点测量值，以便选择最佳的透镜位置。 可以基于从统计数据导出的一组或多组图像聚焦窗口选择规则来选择该组图像聚焦窗口。 此外，还可以基于统计数据来计算图像聚焦窗口的相应权重。
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公开(公告)号：US11336837B2
公开(公告)日：2022-05-17
申请号：US16016099
申请日：2018-06-22
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Linchao Bao , Lifu Yu , Zisheng Cao , Mingyu Wang
Abstract: A system for supporting imaging includes an imaging device configured to capture a plurality of images for a substantially same scene using respective imaging configurations, a stabilization device configured to stabilize the imaging device on a mobile platform during the capturing of the plurality of images, and a controller communicating with at least one of the imaging device or the stabilization device and configured to control an operation of the mobile platform.
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公开(公告)号：US11181809B2
公开(公告)日：2021-11-23
申请号：US16905199
申请日：2020-06-18
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Lifu Yu , Wenmeng Teng , Zisheng Cao
Abstract: A focusing method includes determining a present position of a lens, determining an initial search direction based on a relationship between the present position of the lens and a reference position, and controlling the lens to perform a focusing process in the initial search direction.
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Patent Agency Ranking
公开(公告)号：US11178402B2
公开(公告)日：2021-11-16
申请号：US16824116
申请日：2020-03-19
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Yuanhua Zheng , Lifu Yu , Taiwen Liang , Mingyu Wang
IPC: H04N5/76 , H04N19/152 , G06F13/16 , G11B27/10 , G11B27/36 , H04N5/91 , H04N5/77 , H04N9/80 , G11C7/16
Abstract: A method for adjusting a storage bitrate of a data buffer with a buffer size includes: storing data at a selected storage bitrate into the data buffer; writing the stored data from the data buffer into a storage device attached to the data buffer with a predetermined writing speed; monitoring a data amount of the stored data in the data buffer; monitoring a trend of change in the data amount; determining whether the data amount has reached a first ascending threshold, the first ascending threshold being below the buffer size of the data buffer; and in response to the data amount reaching the first ascending threshold and the trend of change in the data amount being an ascending change, reducing the storage bitrate in the data buffer.
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公开(公告)号：US10798286B2
公开(公告)日：2020-10-06
申请号：US16113852
申请日：2018-08-27
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Lifu Yu
Abstract: A method for moving an optical device relative to an image sensor to focus an image includes receiving a current image acquired by the image sensor when the optical device is at a current position relative to the image sensor, obtaining a current contrast value of the current image and a current contrast variation rate at the current position, determining whether the current contrast variation rate meets a first threshold criterion, moving the optical device from the current position to a next position in accordance with the determination result, and repeating the aforementioned operations until a next contrast variation rate for a next image meets a second threshold criterion. The next image is acquired when the optical device is at the next position.
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18.发明授权公开(公告)号：US11089235B2
公开(公告)日：2021-08-10
申请号：US16742398
申请日：2020-01-14
Applicant: SZ DJI TECHNOLOGY CO., LTD
Inventor： Lifu Yu
Abstract: Systems and methods for reducing a flicker are provided. In some exemplary implementations, the systems and methods may detect a luminance variation indicator in a plurality of images captured by a camera having one or more camera parameters. The luminance variation indicator may include one of a luminance variation frequency or a luminance variation cycle. The exemplary systems and methods may determine a flicker frequency corresponding to the detected luminance variation indicator based at least in part on the camera parameters. The exemplary systems and methods may adjust at least one of the camera parameters to reduce the flicker based on the determined flicker frequency.
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公开(公告)号：US10921610B2
公开(公告)日：2021-02-16
申请号：US16082496
申请日：2015-10-23
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Lifu Yu , Zisheng Cao
Abstract: Imaging systems having counterweights are provided. The counterweights may be operably coupled to one or more lens elements and may be configured to maintain a stability of the imaging system.
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20.发明授权公开(公告)号：US10809716B2
公开(公告)日：2020-10-20
申请号：US15883883
申请日：2018-01-30
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Heli Zhong , Bingzhen Yang , Lifu Yu , Zhiyuan Zhang
Abstract: A method for controlling image capture includes receiving, from a movable device, an image of a target imaging area; adjusting, by a first control apparatus and a second control apparatus, one or more imaging parameters for imaging the target imaging area based at least in part on the image to obtain one or more adjusted imaging parameters; and sending, by the first control apparatus and/or the second control apparatus, an instruction carrying the one or more adjusted imaging parameters to the movable device.
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