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.

公开(公告)号：US20170090149A1

公开(公告)日：2017-03-30

申请号：US14865629

申请日：2015-09-25

Applicant: QUALCOMM Incorporated

Inventor： Micha Galor Gluskin ,  Ruben Manuel Velarde ,  Jisoo Lee

IPC: G02B7/28 ,  G02B7/36 ,  H04N5/232

CPC classification number: G02B7/285 ,  G02B7/34 ,  G02B7/365 ,  H01L27/14621 ,  H01L27/14627 ,  H04N5/23212 ,  H04N5/3696 ,  H04N9/045

Abstract: Certain aspects relate to systems and techniques for using imaging pixels (that is, non-phase detection pixels) in addition to phase detection pixels for calculating autofocus information. Imaging pixel values can be used to interpolate a value at a phase detection pixel location. The interpolated value and a value received from the phase difference detection pixel can be used to obtain a virtual phase detection pixel value. The interpolated value, value received from the phase difference detection pixel, and the virtual phase detection pixel value can be used to obtain a phase difference detection signal indicating a shift direction (defocus direction) and a shift amount (defocus amount) of image focus.

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。

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。

公开(公告)号：US09420248B2

公开(公告)日：2016-08-16

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: H04N5/222 ,  H04N9/73 ,  H04N5/235 ,  G03B15/03 ,  G03B15/05

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。

公开(公告)号：US09420164B1

公开(公告)日：2016-08-16

申请号：US14865503

申请日：2015-09-25

Applicant: QUALCOMM Incorporated

Inventor： Micha Galor Gluskin ,  Ruben Manuel Velarde ,  Jisoo Lee

IPC: H04N5/232

CPC classification number: H04N5/23212 ,  G02B7/09 ,  G02B7/28 ,  G02B7/34 ,  G06T7/0002 ,  H01L27/14621 ,  H01L27/14627 ,  H01L27/14645 ,  H04N5/2254 ,  H04N5/3696 ,  H04N5/378

Abstract: Certain aspects relate to systems and techniques for using imaging pixels (that is, non-phase detection pixels) for performing noise reduction on phase detection autofocus. Advantageously, this can provide for more accurate phase detection autofocus and also to optimized processor usage for performing phase detection. The phase difference detection pixels are provided to obtain a phase difference detection signal indicating a shift direction (defocus direction) and a shift amount (defocus amount) of image focus, and analysis of imaging pixel values can be used to estimate a level of focus of an in-focus region of interest and to limit the identified phase difference accordingly.

Abstract translation: 某些方面涉及用于在相位检测自动对焦上执行降噪的成像像素（即，非相位检测像素）的系统和技术。 有利的是，这可以提供更精确的相位检测自动对焦以及用于执行相位检测的优化的处理器使用。 提供相位差检测像素以获得指示图像焦点的偏移方向（散焦方向）和偏移量（散焦量）的相位差检测信号，并且可以使用成像像素值的分析来估计像素值的焦点水平 一个关注焦点的区域，并相应地限制所识别的相位差。

公开(公告)号：US20150049172A1

公开(公告)日：2015-02-19

申请号：US14250798

申请日：2014-04-11

Applicant: QUALCOMM Incorporated

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

IPC: H04N13/02

CPC classification number: H04N13/246 ,  G06T7/571 ,  G06T7/85 ,  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.

Abstract translation: 公开了使用自动对焦反馈校正立体图像传感器对的立体声偏转的系统和方法。 从图像传感器对的每个传感器捕获的图像之间的物体的不一致性来估计图像中的对象的立体深度。 从自动对焦镜头位置找到对象的自动对焦深度。 如果立体声深度和自动对焦深度之间的差异不为零，则其中一幅图像将变形，并重新计算视差，直到对象的立体深度和自动对焦深度基本相同。

公开(公告)号：US20130286491A1

公开(公告)日：2013-10-31

申请号：US13830442

申请日：2013-03-14

Applicant: QUALCOMM INCORPORATED

Inventor： Hau Ling Hung ,  Jeff Zhong ,  Jeyaprakash Soundrapandian ,  Rajakumar Govindaram ,  Sreesudhan Ramakrish Ramkumar ,  Ruben Manuel Velarde

IPC: G02B7/02

CPC classification number: G02B7/023 ,  G03B3/10 ,  G03B13/32 ,  G03B17/00 ,  G03B2217/00

Abstract: Described herein are methods, apparatus, and computer readable medium to autofocus a lens of an imaging device. Parameters are received indicating a lens position. Lens actuator characteristics are determined. Lens damping parameters may be determined based, at least in part, on the input parameters and the lens actuator characteristics. In some aspects, lens damping parameters include a lens movement step size and a time delay between each step. In some aspects, the lens damping parameters include damping parameters for a plurality of regions of lens movement. Lens movement parameters are determined based, at least in part, on the input parameters and the lens damping parameters. The lens is then autofocused by moving it according to the lens movement parameters.

Abstract translation: 这里描述了使成像装置的透镜自动聚焦的方法，装置和计算机可读介质。 接收到指示透镜位置的参数。 确定镜头执行器特性。 至少部分地基于输入参数和透镜致动器特性来确定透镜阻尼参数。 在一些方面，透镜阻尼参数包括透镜移动步长和每个步骤之间的时间延迟。 在一些方面，透镜阻尼参数包括多个透镜运动区域的阻尼参数。 至少部分地基于输入参数和透镜阻尼参数来确定透镜移动参数。 然后通过根据镜头移动参数移动镜片自动对焦。