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    Signal shaping for improved mobile video communication
    2.
    发明授权
    Signal shaping for improved mobile video communication 有权
    用于改进移动视频通信的信号整形

    公开(公告)号：US09300846B2

    公开(公告)日：2016-03-29

    申请号：US13745256

    申请日：2013-01-18

    申请人： Douglas Price ,  Xiaosong Zhou ,  Hsi-Jung Wu

    发明人： Douglas Price ,  Xiaosong Zhou ,  Hsi-Jung Wu

    IPC分类号： H04N5/217 ,  H04N5/213 ,  H04N5/21

    CPC分类号： H04N5/217 ,  H04N5/21 ,  H04N5/213

    摘要： In certain low-light or other poor image capture conditions, the camera capture settings may create noise fitting a known profile, including certain specific color ranges and signal frequencies, in the captured image. A pre-processor may identify frequency bands and DC offsets that may indicate noise in an image captured with known settings. Then the areas of the image containing the identified frequencies and offsets may be analyzed spatially and temporally to confirm that the identified regions are noise and not part of the scene and an appropriate filter defined.

    摘要翻译： 在某些低光或其他较差的图像捕获条件下，相机拍摄设置可能会在拍摄图像中产生包含某些特定颜色范围和信号频率的已知配置文件的噪声。 预处理器可以识别可能指示以已知设置捕获的图像中的噪声的频带和DC偏移。 然后，可以在空间和时间上分析包含所识别的频率和偏移的图像的区域，以确认所识别的区域是噪声，而不是场景的一部分，并且定义适当的滤波器。

    DISPLAY QUALITY IN A VARIABLE RESOLUTION VIDEO CODER/DECODER SYSTEM
    3.
    发明申请
    DISPLAY QUALITY IN A VARIABLE RESOLUTION VIDEO CODER/DECODER SYSTEM 有权
    在可变分辨率视频编码器/解码器系统中显示质量

    公开(公告)号：US20120195376A1

    公开(公告)日：2012-08-02

    申请号：US13018339

    申请日：2011-01-31

    申请人： Hsi-Jung Wu ,  Xiaosong Zhou ,  Douglas Price

    发明人： Hsi-Jung Wu ,  Xiaosong Zhou ,  Douglas Price

    IPC分类号： H04N7/32 ,  H04N7/26

    CPC分类号： H04N19/105 ,  H04N19/577 ,  H04N19/59

    摘要： In a video coder/decoder system using variable resolution adaptation, decoder techniques provide a mechanism to changing resolution of coded lower-resolution video to a higher resolution for rendering. Coded video data of a low resolution frame may be decoded. A motion estimation search may be performed between the decoded low resolution frame and a cache of previously-stored high resolution video frames. If the motion estimation search generates one or more matches, high resolution video data of the decoded frame may generated as a derivation of matching data from the cached video frames.

    摘要翻译： 在使用可变分辨率适配的视频编码器/解码器系统中，解码器技术提供了将编码的低分辨率视频的分辨率改变到更高分辨率以进行渲染的机制。 可以解码低分辨率帧的编码视频数据。 可以在解码的低分辨率帧和先前存储的高分辨率视频帧的高速缓存之间执行运动估计搜索。 如果运动估计搜索产生一个或多个匹配，则可以生成解码帧的高分辨率视频数据作为来自高速缓存视频帧的匹配数据的导出。

    Scene-aware automatic-exposure control
    4.
    发明授权
    Scene-aware automatic-exposure control 有权
    场景感知自动曝光控制

    公开(公告)号：US08493501B2

    公开(公告)日：2013-07-23

    申请号：US13292353

    申请日：2011-11-09

    申请人： Douglas Price ,  Xiaosong Zhou ,  Hsi-Jung Wu ,  James Oliver Normile

    发明人： Douglas Price ,  Xiaosong Zhou ,  Hsi-Jung Wu ,  James Oliver Normile

    IPC分类号： H04N5/238

    CPC分类号： H04N5/2351

    摘要： A scene-aware auto-exposure control process stabilizes changes in a camera's auto-exposure settings so as to reduce lighting and color flicker during image capture operations. A metric, referred to as the Modified Adjusted Luminance (MAL) metric, is defined to remain relatively constant as long as the lighting of the scene being captured remains relatively constant. Thus, scene changes such as an object moving into, out of, or around in a scene do not significantly affect the MAL metric's value and do not, therefore, trigger an exposure adjustment. Once the MAL metric indicates a scene's lighting is stable, the camera's auto-exposure operation may be suppressed. As long as incoming frames indicate a stable lighting condition (based on the MAL metric), auto-exposure operation may remain suppressed. When incoming frames result in a substantially different MAL over a specified number of frames, auto-exposure operation may be restored.

    摘要翻译： 场景感知自动曝光控制过程可稳定照相机自动曝光设置的变化，以减少图像拍摄过程中的照明和颜色闪烁。 被称为修正调整亮度（MAL）度量的度量被定义为保持相对恒定，只要被捕获的场景的照明保持相对恒定。 因此，诸如移动到场景中的，离开或在场景中的对象的场景改变不会显着影响MAL度量的值，因此不会触发曝光调整。 一旦MAL指标表明场景的照明是稳定的，则可能会抑制相机的自动曝光操作。 只要进入的帧指示稳定的照明条件（基于MAL度量），自动曝光操作可能仍然被抑制。 当输入帧在指定数量的帧上导致基本上不同的MAL时，可以恢复自动曝光操作。

    SCENE-AWARE AUTOMATIC-EXPOSURE CONTROL
    5.
    发明申请
    SCENE-AWARE AUTOMATIC-EXPOSURE CONTROL 有权
    场景自动曝光控制

    公开(公告)号：US20110298965A1

    公开(公告)日：2011-12-08

    申请号：US12793848

    申请日：2010-06-04

    申请人： Douglas Price ,  Xiaosong Zhou ,  Hsi-Jung Wu ,  James Oliver Normile

    发明人： Douglas Price ,  Xiaosong Zhou ,  Hsi-Jung Wu ,  James Oliver Normile

    IPC分类号： H04N5/235

    CPC分类号： H04N5/2351

    摘要： A scene-aware auto-exposure control process stabilizes changes in a camera's auto-exposure settings so as to reduce lighting and color flicker during image capture operations. A metric, referred to as the Modified Adjusted Luminance (MAL) metric, is defined to remain relatively constant as long as the lighting of the scene being captured remains relatively constant. Thus, scene changes such as an object moving into, out of, or around in a scene do not significantly affect the MAL metric's value and do not, therefore, trigger an exposure adjustment. Once the MAL metric indicates a scene's lighting is stable, the camera's auto-exposure operation may be suppressed. As long as incoming frames indicate a stable lighting condition (based on the MAL metric), auto-exposure operation may remain suppressed. When incoming frames result in a substantially different MAL over a specified number of frames, auto-exposure operation may be restored.

    摘要翻译： 场景感知自动曝光控制过程可稳定照相机自动曝光设置的变化，以减少图像拍摄过程中的照明和颜色闪烁。 被称为修正调整亮度（MAL）度量的度量被定义为保持相对恒定，只要被捕获的场景的照明保持相对恒定。 因此，诸如移动到场景中的，离开或在场景中的对象的场景改变不会显着影响MAL度量的值，因此不会触发曝光调整。 一旦MAL指标表明场景的照明是稳定的，则可能会抑制相机的自动曝光操作。 只要进入的帧指示稳定的照明条件（基于MAL度量），自动曝光操作可能仍然被抑制。 当输入帧在指定数量的帧上导致基本上不同的MAL时，可以恢复自动曝光操作。

    Scene-aware automatic-exposure control
    6.
    发明授权
    Scene-aware automatic-exposure control 有权
    场景感知自动曝光控制

    公开(公告)号：US08077256B1

    公开(公告)日：2011-12-13

    申请号：US12793848

    申请日：2010-06-04

    申请人： Douglas Price ,  Xiaosong Zhou ,  Hsi-Jung Wu ,  James Oliver Normile

    发明人： Douglas Price ,  Xiaosong Zhou ,  Hsi-Jung Wu ,  James Oliver Normile

    IPC分类号： H04N5/238

    CPC分类号： H04N5/2351

    摘要： A scene-aware auto-exposure control process stabilizes changes in a camera's auto-exposure settings so as to reduce lighting and color flicker during image capture operations. A metric, referred to as the Modified Adjusted Luminance (MAL) metric, is defined to remain relatively constant as long as the lighting of the scene being captured remains relatively constant. Thus, scene changes such as an object moving into, out of, or around in a scene do not significantly affect the MAL metric's value and do not, therefore, trigger an exposure adjustment. Once the MAL metric indicates a scene's lighting is stable, the camera's auto-exposure operation may be suppressed. As long as incoming frames indicate a stable lighting condition (based on the MAL metric), auto-exposure operation may remain suppressed. When incoming frames result in a substantially different MAL over a specified number of frames, auto-exposure operation may be restored.

    摘要翻译： 场景感知自动曝光控制过程可稳定照相机自动曝光设置的变化，以减少图像拍摄过程中的照明和颜色闪烁。 被称为修正调整亮度（MAL）度量的度量被定义为保持相对恒定，只要被捕获的场景的照明保持相对恒定。 因此，诸如移动到场景中的，离开或在场景中的对象的场景改变不会显着影响MAL度量的值，因此不会触发曝光调整。 一旦MAL指标表明场景的照明是稳定的，则可能会抑制相机的自动曝光操作。 只要进入的帧指示稳定的照明条件（基于MAL度量），自动曝光操作可能仍然被抑制。 当输入帧在指定数量的帧上导致基本上不同的MAL时，可以恢复自动曝光操作。

    Scene-Aware Automatic-Exposure Control
    7.
    发明申请
    Scene-Aware Automatic-Exposure Control 有权
    场景感知自动曝光控制

    公开(公告)号：US20120057073A1

    公开(公告)日：2012-03-08

    申请号：US13292353

    申请日：2011-11-09

    申请人： Douglas Price ,  Xiaosong Zhou ,  Hsi-Jung Wu ,  James Oliver Normile

    发明人： Douglas Price ,  Xiaosong Zhou ,  Hsi-Jung Wu ,  James Oliver Normile

    IPC分类号： H04N5/238

    CPC分类号： H04N5/2351

    摘要： A scene-aware auto-exposure control process stabilizes changes in a camera's auto-exposure settings so as to reduce lighting and color flicker during image capture operations. A metric, referred to as the Modified Adjusted Luminance (MAL) metric, is defined to remain relatively constant as long as the lighting of the scene being captured remains relatively constant. Thus, scene changes such as an object moving into, out of, or around in a scene do not significantly affect the MAL metric's value and do not, therefore, trigger an exposure adjustment. Once the MAL metric indicates a scene's lighting is stable, the camera's auto-exposure operation may be suppressed. As long as incoming frames indicate a stable lighting condition (based on the MAL metric), auto-exposure operation may remain suppressed. When incoming frames result in a substantially different MAL over a specified number of frames, auto-exposure operation may be restored.

    摘要翻译： 场景感知自动曝光控制过程可稳定照相机自动曝光设置的变化，以减少图像拍摄过程中的照明和颜色闪烁。 被称为修正调整亮度（MAL）度量的度量被定义为保持相对恒定，只要被捕获的场景的照明保持相对恒定。 因此，诸如移动到场景中的，离开或在场景中的对象的场景改变不会显着影响MAL度量的值，因此不会触发曝光调整。 一旦MAL指标表明场景的照明是稳定的，则可能会抑制相机的自动曝光操作。 只要进入的帧指示稳定的照明条件（基于MAL度量），自动曝光操作可能仍然被抑制。 当输入帧在指定数量的帧上导致基本上不同的MAL时，可以恢复自动曝光操作。

    Joint frame rate and resolution adaptation
    8.
    发明授权
    Joint frame rate and resolution adaptation 有权
    联合帧速率和分辨率适应

    公开(公告)号：US09215466B2

    公开(公告)日：2015-12-15

    申请号：US13018298

    申请日：2011-01-31

    申请人： Jiefu Zhai ,  Xiaosong Zhou ,  Hsi-Jung Wu

    发明人： Jiefu Zhai ,  Xiaosong Zhou ,  Hsi-Jung Wu

    IPC分类号： H04N7/32 ,  H04N19/156 ,  H04N19/61 ,  H04N19/126 ,  H04N19/146

    CPC分类号： H04N19/156 ,  H04N19/126 ,  H04N19/146 ,  H04N19/61

    摘要： A video coder employs techniques for applying frame rate adaptation and variable resolution adaptation in response to environmental coding factors present at the coding terminal. According to such techniques, a coder may estimate a coding quality level to be applied based on the environmental coding factors. The coder may retrieve from a controller table, settings for resolution and frame rate based on the estimated quality level. Optionally, the coder further may retrieve settings identifying a range of quantization parameters that may be used during coding. Prior to coding, the coder may configure input video data to match the resolution and frame rate settings retrieved from the controller table. Thereafter, the coder may code the reconfigured input video data by motion-compensation prediction constrained, as applicable, by the retrieved quantization parameter range.

    摘要翻译： 视频编码器根据存在于编码终端处的环境编码因素，采用应用帧速率适配和可变分辨率自适应的技术。 根据这样的技术，编码器可以基于环境编码因素估计要应用的编码质量等级。 编码器可以根据估计的质量水平从控制器表检索分辨率和帧速率的设置。 可选地，编码器还可以检索识别可能在编码期间使用的量化参数的范围的设置。 在编码之前，编码器可以配置输入视频数据以匹配从控制器表检索的分辨率和帧率设置。 此后，编码器可以通过运动补偿预测约束（如适用）通过检索的量化参数范围对重新配置的输入视频数据进行编码。