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    BIT-DEPTH EFFICIENT IMAGE PROCESSING
    1.
    发明申请
    BIT-DEPTH EFFICIENT IMAGE PROCESSING 审中-公开

    公开(公告)号：WO2019036522A1

    公开(公告)日：2019-02-21

    申请号：PCT/US2018/046783

    申请日：2018-08-14

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： MCELVAIN, Jon S.

    IPC: H04N19/30

    Abstract: A computer-implemented method for bit-depth efficient image processing includes a step of communicating at least one non-linear transformation to an image signal processor. Each non-linear transformation is configured to, when applied by the image signal processor to a captured image having sensor signals encoded at a first bit depth, produce a nonlinear image that re-encodes the captured image at a second bit depth that may be less than the first bit depth, while optimizing allocation of bit depth resolution in the nonlinear image for low contour visibility. The method further includes receiving the nonlinear image from the image signal processor, and applying an inverse transformation to transform the nonlinear image to a re-linearized image at a third bit depth that is greater than the second bit depth. The inverse transformation is inverse to the nonlinear transformation used to produce the nonlinear image.

    TWO-DIMENSIONAL COLOR TRANSFORMATIONS FOR WIDE GAMUT WORKFLOWS IN DIGITAL CAMERAS
    2.
    发明申请
    TWO-DIMENSIONAL COLOR TRANSFORMATIONS FOR WIDE GAMUT WORKFLOWS IN DIGITAL CAMERAS 审中-公开
    二维彩色变换，用于数字摄像机中的广泛工作流程

    公开(公告)号：WO2015065890A1

    公开(公告)日：2015-05-07

    申请号：PCT/US2014/062366

    申请日：2014-10-27

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： MCELVAIN, Jon S.

    IPC: H04N1/60

    CPC classification number: H04N1/6008 ,  G06T5/007 ,  H04N1/60 ,  H04N1/6058 ,  H04N9/67

    Abstract: In a digital camera system, traditional input color transformations of raw data using a 3 x 3 matrix are replaced by two-dimensional lookup (2-D LUTs) tables that better approximate spectral reflectance characteristics. Chromaticity-like signals and an input scale factor are generated in response to raw sensor output values. The chromaticity signals and the input scale factor are mapped via 2-D LUTs into preliminary output signals and an output scaling factor. A final set of output color signals is generated in response to the preliminary output signals and the output scale factor. The 2-D LUTs are designed in response to spectral response curves generated on both the input and output side of the color transformation.

    Abstract translation: 在数码相机系统中，使用3×3矩阵的原始数据的传统输入颜色变换被更好地近似光谱反射特性的二维查找（2-D LUT）表替代。 响应于原始传感器输出值产生色度信号和输入比例因子。 色度信号和输入比例因子通过2-D LUT映射到初步输出信号和输出缩放因子。 响应于初步输出信号和输出比例因子产生最终的一组输出颜色信号。 2-D LUT是根据在颜色变换的输入和输出侧产生的光谱响应曲线来设计的。

    2D LUT COLOR TRANSFORMS WITH REDUCED MEMORY FOOTPRINT
    4.
    发明申请
    2D LUT COLOR TRANSFORMS WITH REDUCED MEMORY FOOTPRINT 审中-公开
    2D LUT颜色变换与减少的内存空白

    公开(公告)号：WO2017059043A1

    公开(公告)日：2017-04-06

    申请号：PCT/US2016/054395

    申请日：2016-09-29

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： KIM, Joonsoo ,  MCELVAIN, Jon S.

    IPC: H04N1/60

    CPC classification number: H04N1/60

    Abstract: Methods and systems for color transforms are disclosed. A memory footprint of look up tables for color transforms can be reduced by separating the look up tables into factors, applying frequency domain transforms, dividing the look up tables into zones, or establishing hierarchical levels with increasing resolution. The methods can be applied to still image or video cameras with limited computation resources that can benefit from reduced memory footprints.

    Abstract translation: 公开了用于颜色变换的方法和系统。 可以通过将查找表分为因素，应用频域变换，将查找表划分为区域，或者以分辨率提高建立分层级别，来减少用于颜色变换的查找表的内存占用。 这些方法可以应用于具有有限计算资源的静止图像或摄像机，可以从减少的内存占用中受益。

    SPECTRAL IMAGE PROCESSING
    5.
    发明申请
    SPECTRAL IMAGE PROCESSING 审中-公开
    光谱图像处理

    公开(公告)号：WO2013101642A1

    公开(公告)日：2013-07-04

    申请号：PCT/US2012/070855

    申请日：2012-12-20

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： GISH, Walter ,  VOGT, Christopher J. ,  RUHOFF, David ,  MCELVAIN, Jon S.

    IPC: H04N1/60

    CPC classification number: H04N9/646 ,  G06T7/90 ,  G06T2207/10024 ,  H04N1/60 ,  H04N9/643 ,  H04N9/735 ,  H04N17/002 ,  H04N17/02

    Abstract: A substantially rectangular spectral representation is synthesized, which is adapted to produce either (a) image capture device sensor outputs if applied to an image capture device or (b) color values if applied to corresponding analysis functions. Spectral expansion, which can be used in various image processing methods, is achieved with the synthesized spectral representation.

    Abstract translation: 合成基本上矩形的光谱表示，其适于产生（a）如果应用于图像捕获装置的图像捕获装置传感器输出，或（b）如果应用于相应的分析功能，则颜色值。 可以用于各种图像处理方法的光谱扩展通过合成的光谱表示来实现。

    COMPENSATION FOR LIQUID CRYSTAL DISPLAY RESPONSE VARIATIONS UNDER HIGH BRIGHTNESS LIGHT FIELDS
    8.
    发明申请
    COMPENSATION FOR LIQUID CRYSTAL DISPLAY RESPONSE VARIATIONS UNDER HIGH BRIGHTNESS LIGHT FIELDS 审中-公开
    高亮度光场下液晶显示器响应变化的补偿

    公开(公告)号：WO2017223100A1

    公开(公告)日：2017-12-28

    申请号：PCT/US2017/038357

    申请日：2017-06-20

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： MCELVAIN, Jon S.

    IPC: G09G3/36 ,  G09G3/34 ,  G09G5/06

    CPC classification number: G09G3/3648 ,  G09G3/3406 ,  G09G3/3426 ,  G09G3/3607 ,  G09G2320/0242 ,  G09G2320/0276 ,  G09G2320/0285 ,  G09G2320/0646 ,  G09G2320/0673 ,  G09G2360/16

    Abstract: A method for compensation of liquid crystal display response variations in high brightness fields, comprising receiving an image signal having a set of initial liquid crystal display code values for a region, estimating individual backlight power levels for the region of the image signal, determining a combined backlight power level based on the individual backlight power levels of the region, determining at least one change in transmittance based on the combined backlight power level of the region and correcting the set of initial liquid crystal display code values based in the determined at least one change in transmittance.

    Abstract translation: 一种用于补偿高亮度场中的液晶显示器响应变化的方法，包括：接收具有用于一个区域的一组初始液晶显示代码值的图像信号;估计该区域的各个背光功率电平 基于所述区域的各个背光功率电平确定组合的背光功率电平，基于所述区域的组合背光功率电平确定透射率的至少一个变化，并且校正所述一组初始液晶显示代码值 基于确定的透射率的至少一个变化。

    SPECTRAL SYNTHESIS FOR IMAGE CAPTURE DEVICE PROCESSING
    9.
    发明申请
    SPECTRAL SYNTHESIS FOR IMAGE CAPTURE DEVICE PROCESSING 审中-公开
    用于图像捕获设备处理的光谱合成

    公开(公告)号：WO2013101639A1

    公开(公告)日：2013-07-04

    申请号：PCT/US2012/070837

    申请日：2012-12-20

    Applicant: DOLBY LABORATORIES LICENSING CORPORATION

    Inventor： GISH, Walter ,  RUHOFF, David ,  MCELVAIN, Jon S.

    IPC: H04N1/60

    CPC classification number: H04N9/646 ,  G06T7/90 ,  G06T2207/10024 ,  H04N1/60 ,  H04N9/643 ,  H04N9/735 ,  H04N17/002 ,  H04N17/02

    Abstract: A substantially rectangular spectral representation is synthesized, which is adapted to produce image capture device sensor outputs if applied to an image capture device. The synthesized substantially rectangular spectral representation can be utilized in generating output color values of an output color space from image capture device sensor outputs, where the image capture device sensor outputs correspond to an image captured by an image capture device. The generated output color values correspond to colors perceived by the human visual system for the same image as that captured by the image capture device. Image capture device gamut is also determined.

    Abstract translation: 合成基本上矩形的频谱表示，其适用于在应用于图像捕获装置时产生图像捕获装置传感器输出。 合成的基本上矩形的光谱表示可以用于从图像捕获装置传感器输出产生输出颜色空间的输出颜色值，其中图像捕获装置传感器输出对应于由图像捕获装置捕获的图像。 生成的输出颜色值对应于由人类视觉系统感知到的与由图像捕获装置捕获的图像相同的图像的颜色。 图像捕获设备色域也被确定。

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