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公开(公告)号：US09716822B2
公开(公告)日：2017-07-25
申请号：US14693604
申请日：2015-04-22
Applicant: QUALCOMM Incorporated
Inventor： Lei Ma , Fan Deng , Leung Chun Chan
CPC classification number: H04N5/23212 , G02B7/28 , G06T7/74 , H04N5/23216 , H04N5/23219 , H04N5/23293
Abstract: Methods and imaging devices are disclosed for determining a first direction to move a lens in an autofocus operation. For example, one method includes capturing a plurality of frames depicting a scene, selecting a portion of at least one frame that corresponds to an object in a displayed frame, and tracking the object in the plurality of frames, where tracking the object provides a reference parameter of the object for each of the plurality of frames. The method may further includes detecting a change in the reference parameter of at least a first frame and a second frame of the plurality of frames, determining a focus direction based on the change in the reference parameter, and initiating a focus operation by moving a lens of the imaging device based on the determined focus direction.
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公开(公告)号：US20180359465A1
公开(公告)日：2018-12-13
申请号：US15621963
申请日：2017-06-13
Applicant: QUALCOMM Incorporated
Inventor： Loic Francois Segapelli , Hengzhou Ding , Leung Chun Chan
CPC classification number: H04N17/002 , G03B15/05 , G06K9/6202 , G06K9/6215 , G06T7/90 , H04N5/2256 , H04N5/2354 , H04N9/73
Abstract: Aspects of the present disclosure relate to systems and methods for calibrating a flash for image capture. An example method may include receiving, from a camera, a first image of a scene captured with a first flash light source emitting light with a first color temperature and with a second flash light source emitting light with a second color temperature different from the first color temperature. The first flash light source and the second flash light source may be derived based on a first flash calibration setting of a number of stored flash calibration settings. The example method may also include determining a difference between a desired color characteristic for the first flash calibration setting and a color characteristic of the first image. The example method may further include adjusting the first flash calibration setting based on the determined difference.
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公开(公告)号：US09910247B2
公开(公告)日：2018-03-06
申请号：US15002731
申请日：2016-01-21
Applicant: QUALCOMM Incorporated
Inventor： Jisoo Lee , Leung Chun Chan
CPC classification number: G02B7/365 , H04N5/23212 , H04N5/3696
Abstract: Methods and apparatuses for focus hunting prevention for phase detection auto focus (AF) are disclosed. In one aspect, the method is operable by an imaging device, for preventing focus hunting during a phase detection AF process. The method may include capturing an image of a scene and generating a phase difference value and a confidence level for the phase difference value based on the image. The method may also include calculating a focus hunting metric based at least in part on the phase difference value and the confidence level. The method may further include preventing focus hunting via at least one of preventing the start of the focus search and terminating the focus search, in response to the focus hunting metric meeting or exceeding a defined threshold value.
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公开(公告)号：US20160142616A1
公开(公告)日：2016-05-19
申请号：US14693604
申请日：2015-04-22
Applicant: QUALCOMM Incorporated
Inventor： Lei Ma , Fan Deng , Leung Chun Chan
CPC classification number: H04N5/23212 , G02B7/28 , G06T7/74 , H04N5/23216 , H04N5/23219 , H04N5/23293
Abstract: Methods and imaging devices are disclosed for determining a first direction to move a lens in an autofocus operation. For example, one method includes capturing a plurality of frames depicting a scene, selecting a portion of at least one frame that corresponds to an object in a displayed frame, and tracking the object in the plurality of frames, where tracking the object provides a reference parameter of the object for each of the plurality of frames. The method may further includes detecting a change in the reference parameter of at least a first frame and a second frame of the plurality of frames, determining a focus direction based on the change in the reference parameter, and initiating a focus operation by moving a lens of the imaging device based on the determined focus direction.
Abstract translation: 公开了用于确定在自动对焦操作中移动透镜的第一方向的方法和成像装置。 例如，一种方法包括捕获描绘场景的多个帧，选择与所显示的帧中的对象相对应的至少一个帧的一部分，以及跟踪多个帧中的对象，其中跟踪对象提供参考 多个帧中的每一个的对象的参数。 该方法还可以包括检测多个帧中的至少第一帧和第二帧的参考参数的变化，基于参考参数的改变来确定焦点方向，以及通过移动透镜来启动聚焦操作 基于所确定的聚焦方向的成像装置。
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公开(公告)号：US10230888B2
公开(公告)日：2019-03-12
申请号：US14815517
申请日：2015-07-31
Applicant: QUALCOMM Incorporated
Inventor： Ying Chen Lou , Ruben Velarde , Sanket Krishnamurthy Sagar , Hengzhou Ding , Liang Liang , Leung Chun Chan
IPC: H04N5/232 , H04N5/14 , H04N5/235 , H04N21/422 , H04N21/4223 , H04N21/443
Abstract: An apparatus includes an initializer configured to adjust one or more settings of a camera prior to initialization of the camera. The one or more settings are adjusted based on an indication of motion detected using at least one measurement performed by a sensor device. The apparatus further includes a processing device configured to execute a camera application to initialize the camera after adjustment of the one or more settings.
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Patent Agency Ranking
公开(公告)号：US09992423B2
公开(公告)日：2018-06-05
申请号：US14882746
申请日：2015-10-14
Applicant: QUALCOMM Incorporated
CPC classification number: H04N5/23296 , H04N5/23212 , H04N5/23293 , H04N5/2628
Abstract: Devices and methods for capturing images are described herein. A processor may be configured to capture a first image. The processor may further be configured to determine a distance between a lens and an image sensor of the image capture device for capturing the first image. The processor may further be configured to determine a portion of the image sensor to use for the first image based on the determined distance in order to maintain a constant field of view for one or more images captured by the image capture device. The processor may further be configured to adjust the portion of the image sensor used for the first image based on the determined portion of the image sensor to generate an adjusted first image.
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公开(公告)号：US20170212327A1
公开(公告)日：2017-07-27
申请号：US15002731
申请日：2016-01-21
Applicant: QUALCOMM Incorporated
Inventor： Jisoo Lee , Leung Chun Chan
CPC classification number: G02B7/365 , H04N5/23212 , H04N5/3696
Abstract: Methods and apparatuses for focus hunting prevention for phase detection auto focus (AF) are disclosed. In one aspect, the method is operable by an imaging device, for preventing focus hunting during a phase detection AF process. The method may include capturing an image of a scene and generating a phase difference value and a confidence level for the phase difference value based on the image. The method may also include calculating a focus hunting metric based at least in part on the phase difference value and the confidence level. The method may further include preventing focus hunting via at least one of preventing the start of the focus search and terminating the focus search, in response to the focus hunting metric meeting or exceeding a defined threshold value.
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公开(公告)号：US10325354B2
公开(公告)日：2019-06-18
申请号：US15582063
申请日：2017-04-28
Applicant: QUALCOMM Incorporated
Inventor： Ying Xie Noyes , Kyuseo Han , Ho Sang Lee , Hengzhou Ding , Leung Chun Chan , Loic Francois Segapelli
Abstract: A method and apparatus for determining an auto white balance (AWB) gain based on determined depth information. The method may include receiving an image captured by an image sensor, determining depth information associated with the captured image, assigning weights to a plurality of illuminants based on the determined depth information, determining an auto white balance gain based on the assigned weights and statistics of the captured image, and applying the auto white balance gain to the captured image.
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公开(公告)号：US20180315166A1
公开(公告)日：2018-11-01
申请号：US15582063
申请日：2017-04-28
Applicant: QUALCOMM Incorporated
Inventor： Ying Xie Noyes , Kyuseo Han , Ho Sang Lee , Hengzhou Ding , Leung Chun Chan , Loic Francois Segapelli
Abstract: A method and apparatus for determining an auto white balance (AWB) gain based on determined depth information. The method may include receiving an image captured by an image sensor, determining depth information associated with the captured image, assigning weights to a plurality of illuminants based on the determined depth information, determining an auto white balance gain based on the assigned weights and statistics of the captured image, and applying the auto white balance gain to the captured image.
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公开(公告)号：US20160269615A1
公开(公告)日：2016-09-15
申请号：US14643876
申请日：2015-03-10
Applicant: QUALCOMM Incorporated
Inventor： Fan Deng , Lei Ma , Leung Chun Chan
CPC classification number: H04N5/23212 , G06T7/11 , G06T7/187 , G06T7/38 , G06T7/571 , G06T7/80 , G06T2207/10004 , G06T2207/10028 , G06T2207/10148 , G06T2207/20221 , G06T2210/12 , G06T2210/61 , H04N5/2253 , H04N5/23216 , H04N5/23219 , H04N5/23293
Abstract: Systems and methods for continuous automatic focus are disclosed. In some aspects, an object to focus on is selected from a field of view of a camera. At least one region of the field of view that includes the object is monitored for change. Regions of the field of view that do not include the object may not be monitored, thus improving efficiency and speed. If a change in the image content of the monitored region(s) occurs, the method may trigger a focus event. If the object moves to different region(s) of the field of view, the method detects the movement and adjusts the regions of the image being monitored to maintain focus on the object. In some aspects, the size of the object is also monitored. If the size of the object changes, a focus event may be triggered, depending on whether the amount of change exceeds predetermined parameters.
Abstract translation: 公开了用于连续自动对焦的系统和方法。 在某些方面，从照相机的视野中选择要聚焦的对象。 监视包含对象的视野的至少一个区域进行更改。 不包括对象的视野区域可能不被监视，从而提高效率和速度。 如果监视区域的图像内容发生变化，则该方法可能会触发焦点事件。 如果对象移动到视场的不同区域，则该方法检测移动并调整被监视图像的区域以保持对象的焦点。 在某些方面，还监视对象的大小。 如果对象的大小改变，则可以触发焦点事件，这取决于变化量是否超过预定参数。
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