Camera parameter-assisted video encoding
    1.
    发明授权
    Camera parameter-assisted video encoding 有权
    相机参数辅助视频编码

    公开(公告)号:US08837576B2

    公开(公告)日:2014-09-16

    申请号:US12774467

    申请日:2010-05-05

    摘要: This disclosure describes techniques for improving functionalities of a back-end device, e.g., a video encoder, using parameters detected by a front-end device, e.g., a video camera. The techniques may involve detecting a scene change in a captured frame, based on one or more parameters of auto exposure (AE), auto white balance (AWB), and auto focus (AF) functions. If a scene change is detected in a captured frame, a video processing device, which may be a stand-alone device, or may be integrated into one of the front-end or back-end devices, provides an indication of the scene change. The video encoder interprets the signal as a trigger to encode the frame indicated as the frame where a scene change occurred as a reference I frame.

    摘要翻译: 本公开描述了使用由前端设备(例如,摄像机)检测的参数来改进后端设备(例如,视频编码器)的功能的技术。 这些技术可以包括基于自动曝光(AE),自动白平衡(AWB)和自动对焦(AF)功能的一个或多个参数来检测拍摄帧中的场景变化。 如果在拍摄的帧中检测到场景变化,则可以是独立设备的视频处理设备或者可以集成到前端或后端设备之一中的视频处理设备提供场景改变的指示。 视频编码器将该信号解释为触发,以将作为场景变化的帧指示的帧编码为参考I帧。

    Motion information assisted 3A techniques
    2.
    发明授权
    Motion information assisted 3A techniques 有权
    运动信息辅助3A技术

    公开(公告)号:US08659670B2

    公开(公告)日:2014-02-25

    申请号:US12629668

    申请日:2009-12-02

    IPC分类号: H04N5/222

    摘要: A method for adjusting parameters in a video capture device using motion information is disclosed. Motion information that indicates motion of a video capture device is determined. The motion information is compared to an upper bound and a lower bound. An aggressiveness level that indicates a change in a white balance gain for the video capture device is determined based on the comparison. A new white balance gain for the video capture device is determined based on the aggressiveness level. An exposure convergence holding time is adjusted based on the motion information. An exposure step size is increased based on the motion information. A brightness level of the video capture device is adjusted based on the convergence step size.

    摘要翻译: 公开了一种使用运动信息调整视频采集装置中的参数的方法。 确定指示视频捕捉设备的运动的运动信息。 将运动信息与上限和下限进行比较。 基于比较来确定表示视频捕捉设备的白平衡增益变化的侵略性水平。 基于攻击级别确定视频捕获设备的新白平衡增益。 基于运动信息调整曝光收敛保持时间。 基于运动信息增加曝光步长。 基于收敛步长来调整视频采集设备的亮度级别。

    MOTION INFORMATION ASSISTED 3A TECHNIQUES
    3.
    发明申请
    MOTION INFORMATION ASSISTED 3A TECHNIQUES 有权
    运动信息辅助3A技术

    公开(公告)号:US20100265342A1

    公开(公告)日:2010-10-21

    申请号:US12629668

    申请日:2009-12-02

    IPC分类号: H04N5/228

    摘要: A method for adjusting parameters in a video capture device using motion information is disclosed. Motion information that indicates motion of a video capture device is determined. The motion information is compared to an upper bound and a lower bound. An aggressiveness level that indicates a change in a white balance gain for the video capture device is determined based on the comparison. A new white balance gain for the video capture device is determined based on the aggressiveness level. An exposure convergence holding time is adjusted based on the motion information. An exposure step size is increased based on the motion information. A brightness level of the video capture device is adjusted based on the convergence step size.

    摘要翻译: 公开了一种使用运动信息调整视频采集装置中的参数的方法。 确定指示视频捕捉设备的运动的运动信息。 将运动信息与上限和下限进行比较。 基于比较来确定表示视频捕捉设备的白平衡增益变化的侵略性水平。 基于攻击级别确定视频捕获设备的新白平衡增益。 基于运动信息调整曝光收敛保持时间。 基于运动信息增加曝光步长。 基于收敛步长来调整视频采集设备的亮度级别。

    CAMERA PARAMETER-ASSISTED VIDEO ENCODING
    4.
    发明申请
    CAMERA PARAMETER-ASSISTED VIDEO ENCODING 有权
    相机参数辅助视频编码

    公开(公告)号:US20110109758A1

    公开(公告)日:2011-05-12

    申请号:US12774467

    申请日:2010-05-05

    IPC分类号: H04N5/228

    摘要: This disclosure describes techniques for improving functionalities of a back-end device, e.g., a video encoder, using parameters detected by a front-end device, e.g., a video camera. The techniques may involve detecting a scene change in a captured frame, based on one or more parameters of auto exposure (AE), auto white balance (AWB), and auto focus (AF) functions. If a scene change is detected in a captured frame, a video processing device, which may be a stand-alone device, or may be integrated into one of the front-end or back-end devices, provides an indication of the scene change. The video encoder interprets the signal as a trigger to encode the frame indicated as the frame where a scene change occurred as a reference I frame.

    摘要翻译: 本公开描述了使用由前端设备(例如,摄像机)检测的参数来改进后端设备(例如,视频编码器)的功能的技术。 这些技术可以包括基于自动曝光(AE),自动白平衡(AWB)和自动对焦(AF)功能的一个或多个参数来检测拍摄帧中的场景变化。 如果在拍摄的帧中检测到场景变化,则可以是独立设备的视频处理设备或者可以集成到前端或后端设备之一中的视频处理设备提供场景改变的指示。 视频编码器将该信号解释为触发,以将作为场景变化的帧指示的帧编码为参考I帧。

    AUTOMATIC BACKLIGHT DETECTION
    5.
    发明申请
    AUTOMATIC BACKLIGHT DETECTION 审中-公开
    自动背光检测

    公开(公告)号:US20100259639A1

    公开(公告)日:2010-10-14

    申请号:US12422850

    申请日:2009-04-13

    CPC分类号: H04N9/735

    摘要: In a particular embodiment, a method is disclosed that includes receiving image data at an auto white balance module and generating auto white balance data. The method further includes detecting a backlight condition based on the auto white balance data. An apparatus to automatically detect a backlight condition is also disclosed.

    摘要翻译: 在特定实施例中,公开了一种方法,其包括在自动白平衡模块处接收图像数据并产生自动白平衡数据。 该方法还包括基于自动白平衡数据检测背光条件。 还公开了一种自动检测背光条件的装置。

    System and method to estimate autoexposure control and auto white balance
    6.
    发明授权
    System and method to estimate autoexposure control and auto white balance 有权
    估计自动曝光控制和自动白平衡的系统和方法

    公开(公告)号:US08130313B2

    公开(公告)日:2012-03-06

    申请号:US12340046

    申请日:2008-12-19

    IPC分类号: H04N5/222

    CPC分类号: H04N9/735 H04N5/2354

    摘要: In a particular embodiment, a method is disclosed that includes determining at least one ambient exposure parameter using an ambient illumination, the at least one ambient exposure parameter including a first sensitivity parameter of an autoexposure controller using the ambient illumination. The method includes determining at least one low-illumination parameter using a first lamp level, the at least one low-illumination parameter including a second sensitivity parameter of the autoexposure controller using the first lamp level, where the autoexposure controller is configured to operate according to at least one high-illumination parameter based on the at least one ambient exposure parameter and the at least one low-illumination parameter. The method further includes performing an image capture operation using a second lamp level that is brighter than the first lamp level, where the at least one high-illumination parameter includes a third sensitivity parameter.

    摘要翻译: 在一个具体实施例中,公开了一种方法,其包括使用环境照明确定至少一个环境曝光参数,所述至少一个环境曝光参数包括使用环境照明的自动曝光控制器的第一灵敏度参数。 该方法包括使用第一灯电平确定至少一个低照度参数,所述至少一个低照度参数包括使用第一灯电平的自动曝光控制器的第二灵敏度参数,其中自动曝光控制器被配置为根据 基于所述至少一个环境曝光参数和所述至少一个低照度参数的至少一个高照度参数。 该方法还包括使用比第一灯电平更亮的第二灯电平执行图像捕获操作,其中至少一个高照度参数包括第三灵敏度参数。

    IMAGE CAPTURE PARAMETER ADJUSTMENT USING FACE BRIGHTNESS INFORMATION
    7.
    发明申请
    IMAGE CAPTURE PARAMETER ADJUSTMENT USING FACE BRIGHTNESS INFORMATION 有权
    使用脸部亮度信息的图像捕获参数调整

    公开(公告)号:US20100271507A1

    公开(公告)日:2010-10-28

    申请号:US12429970

    申请日:2009-04-24

    IPC分类号: H04N5/76 H04N9/68

    摘要: A system and method of image capture parameter adjustment using face brightness information is disclosed. In a particular embodiment, a method is disclosed that includes determining a luma value based on a brightness variation within a selected portion of an image, where the selected portion of the image corresponds to at least a portion of a face. The method further includes adjusting an image capture parameter at least partially based on the determined luma value.

    摘要翻译: 公开了使用面部亮度信息的图像拍摄参数调整的系统和方法。 在特定实施例中,公开了一种方法,其包括基于图像的所选部分内的亮度变化来确定亮度值,其中图像的所选部分对应于面部的至少一部分。 该方法还包括至少部分地基于所确定的亮度值来调整图像拍摄参数。

    Image capture parameter adjustment using face brightness information
    8.
    发明授权
    Image capture parameter adjustment using face brightness information 有权
    使用脸部亮度信息进行图像拍摄参数调整

    公开(公告)号:US08339506B2

    公开(公告)日:2012-12-25

    申请号:US12429970

    申请日:2009-04-24

    IPC分类号: H04N5/238

    摘要: A system and method of image capture parameter adjustment using face brightness information is disclosed. In a particular embodiment, a method is disclosed that includes determining a luma value based on a brightness variation within a selected portion of an image, where the selected portion of the image corresponds to at least a portion of a face. The method further includes adjusting an image capture parameter at least partially based on the determined luma value.

    摘要翻译: 公开了使用面部亮度信息的图像拍摄参数调整的系统和方法。 在特定实施例中,公开了一种方法,其包括基于图像的所选部分内的亮度变化来确定亮度值,其中图像的所选部分对应于面部的至少一部分。 该方法还包括至少部分地基于所确定的亮度值来调整图像拍摄参数。

    System and method to autofocus assisted by autoexposure control
    9.
    发明授权
    System and method to autofocus assisted by autoexposure control 有权
    通过自动曝光控制辅助自动对焦的系统和方法

    公开(公告)号:US08149323B2

    公开(公告)日:2012-04-03

    申请号:US12338147

    申请日:2008-12-18

    IPC分类号: G03B13/00 H04N5/232

    摘要: In a particular embodiment, a method is disclosed that includes comparing a frame rate of image capture by an image sensor to a frame rate threshold at an image capture device. The method also includes when the frame rate is less than the frame rate threshold, increasing the frame rate to a modified frame rate that is greater than or at least equal to the frame rate threshold. The method further includes performing an autofocus operation on an image to be captured at the modified frame rate.

    摘要翻译: 在特定实施例中,公开了一种方法,其包括将图像传感器的图像捕获的帧速率与图像捕获装置的帧速率阈值进行比较。 该方法还包括当帧速率小于帧速率阈值时,将帧速率增加到大于或至少等于帧速率阈值的修改帧速率。 该方法还包括对以被修改的帧速率捕获的图像执行自动对焦操作。

    SYSTEM AND METHOD TO AUTOFOCUS ASSISTED BY AUTOEXPOSURE CONTROL
    10.
    发明申请
    SYSTEM AND METHOD TO AUTOFOCUS ASSISTED BY AUTOEXPOSURE CONTROL 有权
    自动曝光控制辅助系统和方法

    公开(公告)号:US20100157136A1

    公开(公告)日:2010-06-24

    申请号:US12338147

    申请日:2008-12-18

    IPC分类号: H04N5/232

    摘要: In a particular embodiment, a method is disclosed that includes comparing a frame rate of image capture by an image sensor to a frame rate threshold at an image capture device. The method also includes when the frame rate is less than the frame rate threshold, increasing the frame rate to a modified frame rate that is greater than or at least equal to the frame rate threshold. The method further includes performing an autofocus operation on an image to be captured at the modified frame rate.

    摘要翻译: 在特定实施例中,公开了一种方法,其包括将图像传感器的图像捕获的帧速率与图像捕获装置的帧速率阈值进行比较。 该方法还包括当帧速率小于帧速率阈值时,将帧速率增加到大于或至少等于帧速率阈值的修改帧速率。 该方法还包括对以被修改的帧速率捕获的图像执行自动对焦操作。