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    Methods and apparatus for defocus reduction using laser autofocus
    1.
    发明授权
    Methods and apparatus for defocus reduction using laser autofocus 有权

    公开(公告)号：US11240421B2

    公开(公告)日：2022-02-01

    申请号：US14754048

    申请日：2015-06-29

    Applicant: QUALCOMM Incorporated

    Inventor： Sanket Krishnamurthy Sagar ,  Ying Chen Lou ,  Ruben Manuel Velarde

    IPC: H04N5/232 ,  G02B7/38 ,  G01B11/14

    Abstract: Methods and imaging devices are disclosed for reducing defocus events occurring during autofocus search operations. For example, one method includes capturing a plurality of frames depicting a scene with an imaging device, selecting a portion of the scene of at least one frame that corresponds to an object of the scene, and detecting a change in the scene. The method further includes detecting a distance between the object and the imaging device for each of the plurality of frames, determining a lens position for each frame based on the determined distance of each frame and moving a lens toward the lens position of each frame while the scene continuously changes. The method also includes determining the scene is stable and initiating an autofocus search operation based on the determination that the scene is stable.

    METHODS AND APPARATUS FOR PERFORMING EXPOSURE ESTIMATION USING A TIME-OF-FLIGHT SENSOR
    2.
    发明申请
    METHODS AND APPARATUS FOR PERFORMING EXPOSURE ESTIMATION USING A TIME-OF-FLIGHT SENSOR 有权
    使用飞行时间传感器执行曝光估算的方法和装置

    公开(公告)号：US20160377708A1

    公开(公告)日：2016-12-29

    申请号：US14750209

    申请日：2015-06-25

    Applicant: QUALCOMM Incorporated

    Inventor： Ying Chen Lou ,  Hengzhou Ding ,  Ruben Manuel Velarde

    IPC: G01S7/486 ,  H04N5/232 ,  H04N5/235 ,  G01S17/89 ,  G01S17/08

    CPC classification number: G01S7/4865 ,  G01S7/4868 ,  G01S7/497 ,  G01S17/08 ,  G01S17/89 ,  H04N5/23212 ,  H04N5/2353

    Abstract: This application relates to capturing an image of a target object using information from a time-of-flight sensor. In one aspect, a method may include a time-of-flight (TOF) system configured to emit light and sense a reflection of the emitted light and may determine a return energy based on the reflection of the emitted light. The method may measure a time between when the light is emitted and when the reflection is sensed and may determine a distance between the target object and the TOF system based on that time. The method may also identify a reflectance of the target object based on the return energy and may determine an exposure level based on a distance between the target object and a reflectance of the target object.

    Abstract translation: 本申请涉及使用来自飞行时间传感器的信息来捕获目标对象的图像。 一方面，一种方法可以包括配置成发射光并感测所发射的光的反射的飞行时间（TOF）系统，并且可以基于发射的光的反射来确定返回能量。 该方法可以测量光发射时和感测反射之间的时间，并且可以基于该时间来确定目标对象和TOF系统之间的距离。 该方法还可以基于返回能量来识别目标对象的反射率，并且可以基于目标对象与目标对象的反射率之间的距离来确定曝光水平。

    SEARCH RANGE EXTENSION FOR DEPTH ASSISTED AUTOFOCUS
    3.
    发明申请
    SEARCH RANGE EXTENSION FOR DEPTH ASSISTED AUTOFOCUS 有权
    搜索范围扩展深度辅助自动化

    公开(公告)号：US20160266467A1

    公开(公告)日：2016-09-15

    申请号：US14825964

    申请日：2015-08-13

    Applicant: QUALCOMM Incorporated

    Inventor： Ying Chen Lou ,  Sanket Krishnamurthy Sagar ,  Ruben Manuel Velarde

    IPC: G03B3/10 ,  H04N5/222 ,  H04N5/232

    CPC classification number: G03B3/10 ,  G02B7/285 ,  G03B13/36 ,  H04N5/2226 ,  H04N5/23212

    Abstract: Systems and methods described herein can adjust a search range generated by a camera using depth-assisted autofocus based in part on measuring focus values in a first search range. For example, in some embodiments, a method includes estimating a depth of an object to be captured in an image, determining a first range of lens positions based at least in part on the estimating, moving the lens of the camera to a plurality of lens positions within the first range of lens positions, capturing a plurality of images, the plurality of images being captured at one or more of the plurality of lens positions, generating one or more focus values based on the plurality of images, and determining one or more additional lens positions or a second range of lens positions based at least in part on the one or more focus values.

    Abstract translation: 本文所述的系统和方法可以部分地基于第一搜索范围中的测量焦点值来调整由相机使用深度辅助自动对焦产生的搜索范围。 例如，在一些实施例中，一种方法包括估计要在图像中捕获的对象的深度，至少部分地基于估计将相机的镜头移动到多个透镜来确定透镜位置的第一范围 在第一镜头位置范围内的位置，拍摄多个图像，多个图像被捕获在多个透镜位置的一个或多个位置，基于多个图像生成一个或多个焦点值，并且确定一个或多个 至少部分地基于所述一个或多个聚焦值的附加透镜位置或透镜位置的第二范围。

    Methods and apparatus for defocus reduction using laser autofocus
    4.
    发明授权
    Methods and apparatus for defocus reduction using laser autofocus 有权

    公开(公告)号：US11956536B2

    公开(公告)日：2024-04-09

    申请号：US17645596

    申请日：2021-12-22

    Applicant: QUALCOMM Incorporated

    Inventor： Sanket Krishnamurthy Sagar ,  Ying Chen Lou ,  Ruben Velarde

    IPC: H04N5/232 ,  G01B11/14 ,  G02B7/38 ,  H04N23/67

    CPC classification number: H04N23/671 ,  G01B11/14 ,  G02B7/38 ,  H04N23/673

    Abstract: Methods and imaging devices are disclosed for reducing defocus events occurring during autofocus search operations. For example, one method includes capturing a plurality of frames depicting a scene with an imaging device, selecting a portion of the scene of at least one frame that corresponds to an object of the scene, and detecting a change in the scene. The method further includes detecting a distance between the object and the imaging device for each of the plurality of frames, determining a lens position for each frame based on the determined distance of each frame and moving a lens toward the lens position of each frame while the scene continuously changes. The method also includes determining the scene is stable and initiating an autofocus search operation based on the determination that the scene is stable.

    Search range extension for depth assisted autofocus
    8.
    发明授权
    Search range extension for depth assisted autofocus 有权

    公开(公告)号：US09638984B2

    公开(公告)日：2017-05-02

    申请号：US14825964

    申请日：2015-08-13

    Applicant: QUALCOMM Incorporated

    Inventor： Ying Chen Lou ,  Sanket Krishnamurthy Sagar ,  Ruben Manuel Velarde

    IPC: G03B3/10 ,  H04N5/222 ,  H04N5/232 ,  G02B7/28 ,  G03B13/36

    CPC classification number: G03B3/10 ,  G02B7/285 ,  G03B13/36 ,  H04N5/2226 ,  H04N5/23212

    Abstract: Systems and methods described herein can adjust a search range generated by a camera using depth-assisted autofocus based in part on measuring focus values in a first search range. For example, in some embodiments, a method includes estimating a depth of an object to be captured in an image, determining a first range of lens positions based at least in part on the estimating, moving the lens of the camera to a plurality of lens positions within the first range of lens positions, capturing a plurality of images, the plurality of images being captured at one or more of the plurality of lens positions, generating one or more focus values based on the plurality of images, and determining one or more additional lens positions or a second range of lens positions based at least in part on the one or more focus values.

    SYSTEMS AND METHODS FOR AUTOFOCUS TRIGGER
    9.
    发明申请
    SYSTEMS AND METHODS FOR AUTOFOCUS TRIGGER 有权
    自动跟踪器的系统和方法

    公开(公告)号：US20170003573A1

    公开(公告)日：2017-01-05

    申请号：US14791035

    申请日：2015-07-02

    Applicant: QUALCOMM Incorporated

    Inventor： Venkata Ravi Kiran Dayana ,  Karthikeyan Shanmugavadivelu ,  Shizhong Liu ,  Ying Chen Lou ,  Hung-Hsin Wu ,  Narayana Karthik Sadanandam Ravirala ,  Adarsh Abhay Golikeri

    IPC: G03B13/36

    CPC classification number: G03B13/36 ,  H04N5/23212

    Abstract: Method and systems for autofocus triggering focusing are disclosed herein. In one example, a system may include a lens, a memory component configured to store lens parameters of the lens and regions of focus corresponding to the lens parameters, and a processor coupled to the memory and the lens. The processor may be configured to focus the lens on a target object at a first instance of time, receive information indicative of distances from an imaging device to the target object over a period of time, obtain lens parameters of the lens, and determine a region of focus, and trigger the lens to re-focus on the target object if the distance to the target object indicates the target object is outside of the region of focus and the distance to the target object is unchanged for a designated time period.

    Abstract translation: 本文公开了用于自动对焦触发对焦的方法和系统。 在一个示例中，系统可以包括透镜，被配置为存储透镜的透镜参数和对应于透镜参数的聚焦区域的存储器组件，以及耦合到存储器和透镜的处理器。 处理器可以被配置为在第一时间将透镜聚焦在目标物体上，在一段时间内接收指示从成像装置到目标物体的距离的信息，获得透镜的透镜参数，并且确定一个区域 并且如果到目标对象的距离指示目标对象在焦点区域之外并且到目标对象的距离在指定时间段内不变，则触发镜头重新对焦于目标对象。

    METHODS AND APPARATUS FOR DEFOCUS REDUCTION USING LASER AUTOFOCUS
    10.
    发明申请
    METHODS AND APPARATUS FOR DEFOCUS REDUCTION USING LASER AUTOFOCUS 审中-公开
    使用激光自动对焦减弱的方法和装置

    公开(公告)号：US20160301852A1

    公开(公告)日：2016-10-13

    申请号：US14754048

    申请日：2015-06-29

    Applicant: QUALCOMM Incorporated

    Inventor： Sanket Krishnamurthy Sagar ,  Ying Chen Lou ,  Ruben Manuel Velarde

    IPC: H04N5/232 ,  G01B11/14

    CPC classification number: H04N5/23212 ,  G01B11/14 ,  G02B7/38

    Abstract: Methods and imaging devices are disclosed for reducing defocus events occurring during autofocus search operations. For example, one method includes capturing a plurality of frames depicting a scene with an imaging device, selecting a portion of the scene of at least one frame that corresponds to an object of the scene, and detecting a change in the scene. The method further includes detecting a distance between the object and the imaging device for each of the plurality of frames, determining a lens position for each frame based on the determined distance of each frame and moving a lens toward the lens position of each frame while the scene continuously changes. The method also includes determining the scene is stable and initiating an autofocus search operation based on the determination that the scene is stable.

    Abstract translation: 公开了用于减少自动对焦搜索操作期间发生的散焦事件的方法和成像装置。 例如，一种方法包括使用成像装置捕获描绘场景的多个帧，选择与场景的对象相对应的至少一个帧的场景的一部分，以及检测场景中的改变。 该方法还包括检测多个帧中的每个帧的物体和成像装置之间的距离，基于确定的每个帧的距离确定每个帧的透镜位置，并将透镜朝向每个帧的透镜位置移动，同时 场景不断变化 该方法还包括基于场景稳定的确定来确定场景是稳定的并且启动自动对焦搜索操作。

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