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    MULTI-LED CAMERA FLASH FOR COLOR TEMPERATURE MATCHING
    5.
    发明申请
    MULTI-LED CAMERA FLASH FOR COLOR TEMPERATURE MATCHING 有权
    用于彩色温度匹配的多LED相机闪光灯

    公开(公告)号：US20160088278A1

    公开(公告)日：2016-03-24

    申请号：US14491627

    申请日：2014-09-19

    Applicant: QUALCOMM INCORPORATED

    Inventor： Ruben Manuel Velarde ,  Nathaniel Jay Tobias Salazar ,  Szepo Robert Hung ,  Sandeep Dhar ,  Hengzhou Ding

    IPC: H04N9/73 ,  G03B15/03 ,  H04N5/235

    CPC classification number: H04N9/735 ,  G03B15/03 ,  G03B15/05 ,  G03B2215/0503 ,  G03B2215/0567 ,  G03B2215/0571 ,  H04N5/2354 ,  H04N9/045

    Abstract: Certain aspects relate to systems and techniques for color temperature analysis and matching. For example, three or more camera flash LEDs of different output colors can be used to match any of a range of ambient color temperatures in a non-linear space on the black body curve. The scene color temperature can be analyzed in a preliminary image by determining actual sensor R/G and B/G ratios, enabling more accurate matching of foreground flash lighting to background lighting by the reference illuminant for subsequent white balance processing. The current provided to, and therefore brightness emitted from, each LED can be individually controlled based on the determined sensor response to provide a dynamic and adaptive mix of the output colors of the LEDs.

    Abstract translation: 某些方面涉及色温分析和匹配的系统和技术。 例如，可以使用不同输出颜色的三个或更多个相机闪光LED来匹配黑体曲线上的非线性空间中的环境色温范围中的任何一个。 可以通过确定实际的传感器R / G和B / G比率，在初步图像中分析场景色温，从而能够通过参考光源更准确地将前景闪光照明与背景照明的匹配进行后续的白平衡处理。 可以基于所确定的传感器响应来单独地控制提供给每个LED并且因此从每个LED发射的亮度的电流，以提供LED的输出颜色的动态和自适应混合。

    Stereo yaw correction using autofocus feedback
    6.
    发明授权
    Stereo yaw correction using autofocus feedback 有权

    公开(公告)号：US10178373B2

    公开(公告)日：2019-01-08

    申请号：US14250798

    申请日：2014-04-11

    Applicant: QUALCOMM Incorporated

    Inventor： Vikas Ramachandra ,  Kalin Mitkov Atanassov ,  Ruben Manuel Velarde

    IPC: H04N13/246 ,  G06T7/80 ,  G06T7/571 ,  H04N13/239

    Abstract: Systems and methods for correcting stereo yaw of a stereoscopic image sensor pair using autofocus feedback are disclosed. A stereo depth of an object in an image is estimated from the disparity of the object between the images captured by each sensor of the image sensor pair. An autofocus depth to the object is found from the autofocus lens position. If the difference between the stereo depth and the autofocus depth is non zero, one of the images is warped and the disparity is recalculated until the stereo depth and the autofocus depth to the object is substantially the same.

    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.

    METHODS AND APPARATUS FOR DEFOCUS REDUCTION USING LASER AUTOFOCUS
    9.
    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。

    AUTOMATIC BANDING CORRECTION IN AN IMAGE CAPTURE DEVICE
    10.
    发明申请
    AUTOMATIC BANDING CORRECTION IN AN IMAGE CAPTURE DEVICE 审中-公开
    图像捕获设备中的自动带对校正

    公开(公告)号：US20140354859A1

    公开(公告)日：2014-12-04

    申请号：US14025496

    申请日：2013-09-12

    Applicant: QUALCOMM Incorporated

    Inventor： Ying X. Noyes ,  Ruben Manuel Velarde ,  Tao Ma

    IPC: H04N5/235

    CPC classification number: H04N5/2357

    Abstract: Certain embodiments relate to banding detection and correction techniques to improve the quality of captured imagery, such as video or still images. In particular, this disclosure describes banding correction techniques that cycle between detection of rolling banding and static banding to determine the power line frequency of ambient light, for example 50 Hz or 60 Hz. The banding correction techniques may also compare different image frames to detect rolling banding. The banding correction techniques may compare row sum data of a plurality of image frames and apply a Fourier analysis to determine a periodic signal of static banding at a particular ambient light power line frequency.

    Abstract translation: 某些实施例涉及条带检测和校正技术以改善所捕获图像的质量，例如视频或静止图像。 特别地，本公开描述了在检测滚动条带和静态条带之间循环的条带校正技术，以确定环境光的电力线频率，例如50Hz或60Hz。 条带校正技术还可以比较不同的图像帧以检测卷带。 条带校正技术可以比较多个图像帧的行和数据并应用傅里叶分析来确定特定环境光功率线频率处的静态条带的周期性信号。

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