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公开(公告)号：US20120281009A1
公开(公告)日：2012-11-08
申请号：US13553440
申请日：2012-07-19
申请人： Gregory John Ward , Wenhui Jia , Ajit Ninan , Arkady Ten , Gaven Wang
发明人： Gregory John Ward , Wenhui Jia , Ajit Ninan , Arkady Ten , Gaven Wang
摘要： Techniques are provided to encode and decode image data comprising a tone mapped (TM) image with HDR reconstruction data in the form of luminance ratios and color residual values. In an example embodiment, luminance ratio values and residual values in color channels of a color space are generated on an individual pixel basis based on a high dynamic range (HDR) image and a derivative tone-mapped (TM) image that comprises one or more color alterations that would not be recoverable from the TM image with a luminance ratio image. The TM image with HDR reconstruction data derived from the luminance ratio values and the color-channel residual values may be outputted in an image file to a downstream device, for example, for decoding, rendering, and/or storing. The image file may be decoded to generate a restored HDR image free of the color alterations.
摘要翻译： 提供了技术来编码和解码包括色调映射（TM）图像的图像数据，其中HDR重建数据以亮度比和颜色残余值的形式。 在一个示例实施例中，基于高动态范围（HDR）图像和包括一个或多个的图像的导数色调映射（TM）图像，在各个像素的基础上产生颜色空间的颜色通道中的亮度比值和残差值 不能从具有亮度比图像的TM图像中恢复的颜色变化。 可以将从亮度比值和颜色通道残差导出的具有HDR重建数据的TM图像输出到图像文件到下游装置，例如用于解码，渲染和/或存储。 图像文件可以被解码以生成没有颜色变化的恢复的HDR图像。
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公开(公告)号：US08248486B1
公开(公告)日：2012-08-21
申请号：US13449119
申请日：2012-04-17
申请人： Gregory John Ward , Wenhui Jia , Ajit Ninan , Arkady Ten , Gaven Wang
发明人： Gregory John Ward , Wenhui Jia , Ajit Ninan , Arkady Ten , Gaven Wang
CPC分类号： H04N9/77 , H04N1/4072 , H04N1/60 , H04N1/6066 , H04N9/67 , H04N19/30
摘要： Techniques are provided to encode and decode image data comprising a tone mapped (TM) image with HDR reconstruction data in the form of luminance ratios and color residual values. In an example embodiment, luminance ratio values and residual values in color channels of a color space are generated on an individual pixel basis based on a high dynamic range (HDR) image and a derivative tone-mapped (TM) image that comprises one or more color alterations that would not be recoverable from the TM image with a luminance ratio image. The TM image with HDR reconstruction data derived from the luminance ratio values and the color-channel residual values may be outputted in an image file to a downstream device, for example, for decoding, rendering, and/or storing. The image file may be decoded to generate a restored HDR image free of the color alterations.
摘要翻译： 提供了技术来编码和解码包括色调映射（TM）图像的图像数据，其中HDR重建数据以亮度比和颜色残余值的形式。 在一个示例实施例中，基于高动态范围（HDR）图像和包括一个或多个的图像的导数色调映射（TM）图像，在各个像素的基础上产生颜色空间的颜色通道中的亮度比值和残差值 不能从具有亮度比图像的TM图像中恢复的颜色变化。 可以将从亮度比值和颜色通道残差导出的具有HDR重建数据的TM图像输出到图像文件到下游装置，例如用于解码，渲染和/或存储。 图像文件可以被解码以生成没有颜色变化的恢复的HDR图像。
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公开(公告)号：US08334911B2
公开(公告)日：2012-12-18
申请号：US13553440
申请日：2012-07-19
申请人： Wenhui Jia , Ajit Ninan , Arkady Ten , Gregory John Ward
发明人： Wenhui Jia , Ajit Ninan , Arkady Ten , Gregory John Ward
摘要： Techniques are provided to encode and decode image data comprising a tone mapped (TM) image with HDR reconstruction data in the form of luminance ratios and color residual values. In an example embodiment, luminance ratio values and residual values in color channels of a color space are generated on an individual pixel basis based on a high dynamic range (HDR) image and a derivative tone-mapped (TM) image that comprises one or more color alterations that would not be recoverable from the TM image with a luminance ratio image. The TM image with HDR reconstruction data derived from the luminance ratio values and the color-channel residual values may be outputted in an image file to a downstream device, for example, for decoding, rendering, and/or storing. The image file may be decoded to generate a restored HDR image free of the color alterations.
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公开(公告)号：US09576555B2
公开(公告)日：2017-02-21
申请号：US13704688
申请日：2011-06-20
申请人： Ajit Ninan , Wenhui Jia
发明人： Ajit Ninan , Wenhui Jia
IPC分类号： G09G5/00 , G09G5/10 , G09G3/36 , G06T5/00 , G06T5/50 , G09G3/34 , H04N19/60 , H04N19/44 , H04N19/85
CPC分类号： G09G5/10 , G06T5/009 , G06T5/50 , G06T2207/20212 , G09G3/3426 , G09G3/36 , G09G2320/0238 , G09G2320/0242 , G09G2320/0271 , G09G2320/062 , G09G2320/0646 , G09G2320/066 , G09G2340/02 , G09G2340/0428 , H04N19/44 , H04N19/60 , H04N19/85
摘要： Displays, display components, image and video processing apparatus and related methods are described. A method for driving local-dimming displays comprises generating control values for driving pixels of a spatial light modulator from one image data component and generating control values for driving backlight elements from a second image data component. The first and second image data components may respectively comprise a tone map and a ratio image. Control values for the spatial light modulator and/or backlight may be obtained using cost effective hardware.
摘要翻译： 描述显示，显示组件，图像和视频处理设备及相关方法。 用于驱动局部调光显示的方法包括从一个图像数据分量产生用于驱动空间光调制器的像素的控制值，并且产生用于驱动来自第二图像数据分量的背光元件的控制值。 第一和第二图像数据分量可以分别包括色调图和比例图像。 可以使用成本有效的硬件来获得空间光调制器和/或背光的控制值。
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公开(公告)号：US09159270B2
公开(公告)日：2015-10-13
申请号：US13817244
申请日：2011-08-25
申请人： Ajit Ninan , Wenhui Jia
发明人： Ajit Ninan , Wenhui Jia
CPC分类号： G09G3/3406 , G09G3/3426 , G09G2320/0238 , G09G2320/0626 , G09G2320/0646 , G09G2320/066 , G09G2360/144
摘要： Techniques for operating a display system in a wide range of ambient light conditions are provided. An intensity of ambient light on a display panel may be detected. The display panel may be illuminated by light sources in addition to the ambient light. An individual light source may be individually settable to an individual light output level. If it is determined that the luminance level of the ambient light is above a minimum ambient luminance threshold, an ambient black level may be calculated using the intensity of ambient light. Light output levels of one or more of the light sources may be elevated to first light output levels. Here, the one or more light sources may be designated to illuminate one or more dark portions of an image. The first light output levels may create a new black level equaling the determined ambient black level.
摘要翻译： 提供了用于在宽范围的环境光条件下操作显示系统的技术。 可以检测显示面板上的环境光的强度。 除了环境光之外，显示面板也可以被光源照亮。 单独的光源可以单独地设置为单独的光输出电平。 如果确定环境光的亮度水平高于最小环境亮度阈值，则可以使用环境光的强度来计算环境黑色电平。 一个或多个光源的光输出电平可以升高到第一光输出电平。 这里，可以指定一个或多个光源来照亮图像的一个或多个暗部分。 第一光输出电平可产生等于所确定的环境黑电平的新黑电平。
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公开(公告)号：US20130100178A1
公开(公告)日：2013-04-25
申请号：US13704688
申请日：2011-06-20
申请人： Ajit Ninan , Wenhui Jia
发明人： Ajit Ninan , Wenhui Jia
IPC分类号： G09G5/10
CPC分类号： G09G5/10 , G06T5/009 , G06T5/50 , G06T2207/20212 , G09G3/3426 , G09G3/36 , G09G2320/0238 , G09G2320/0242 , G09G2320/0271 , G09G2320/062 , G09G2320/0646 , G09G2320/066 , G09G2340/02 , G09G2340/0428 , H04N19/44 , H04N19/60 , H04N19/85
摘要： Displays, display components, image and video processing apparatus and related methods are described. A method for driving local-dimming displays comprises generating control values for driving pixels of a spatial light modulator from one image data component and generating control values for driving backlight elements from a second image data component. The first and second image data components may respectively comprise a tone map and a ratio image. Control values for the spatial light modulator and/or backlight may be obtained using cost effective hardware.
摘要翻译： 描述显示，显示组件，图像和视频处理设备及相关方法。 用于驱动局部调光显示的方法包括从一个图像数据分量产生用于驱动空间光调制器的像素的控制值，并且产生用于驱动来自第二图像数据分量的背光元件的控制值。 第一和第二图像数据分量可以分别包括色调图和比例图像。 可以使用成本有效的硬件来获得空间光调制器和/或背光的控制值。
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公开(公告)号：US20120224788A1
公开(公告)日：2012-09-06
申请号：US13410885
申请日：2012-03-02
申请人： Wenhui Jia , Ajit Ninan
发明人： Wenhui Jia , Ajit Ninan
IPC分类号： G06K9/40
CPC分类号： H04N5/235 , G06T5/50 , G06T2207/20208
摘要： Techniques are provided to generate high or wide dynamic range image from two or more input images of different exposure settings by directly merging coefficients derived from the input images in a transform domain. Energy values may be determined from coefficients blocks derived from the input images. The energy values may be compared with thresholds to determine weight factors for the coefficient blocks. An output coefficient block in the transform domain, used in or used to generate the output image, may be determined as a weighted combination of the coefficient blocks in the transform domain derived from the input images. If input images are compressed in transform domain, an output image can be generated without performing decompression in transform domain.
摘要翻译： 提供技术以通过直接合并从变换域中的输入图像导出的系数来从不同曝光设置的两个或更多个输入图像生成高或宽的动态范围图像。 可以从从输入图像导出的系数块确定能量值。 能量值可以与阈值进行比较，以确定系数块的权重因子。 用于或用于生成输出图像的变换域中的输出系数块可以被确定为从输入图像导出的变换域中的系数块的加权组合。 如果输入图像在变换域中被压缩，则可以生成输出图像而不在变换域中执行解压缩。
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公开(公告)号：US09368087B2
公开(公告)日：2016-06-14
申请号：US13814584
申请日：2011-08-25
申请人： Ajit Ninan , Wenhui Jia
发明人： Ajit Ninan , Wenhui Jia
CPC分类号： G09G5/10 , G09G3/3426 , G09G5/346 , G09G2320/062 , G09G2320/0646 , G09G2360/16
摘要： Techniques for displaying images of different dynamic ranges in a display system are provided. In some embodiments, images that have a number of dynamic ranges may be normalized to a configured dynamic range that corresponds to the full intensity reproduction capability of the device. The configured dynamic range may be wider, greater, or deeper than the relatively limited dynamic range.
摘要翻译： 提供了在显示系统中显示不同动态范围的图像的技术。 在一些实施例中，具有多个动态范围的图像可以被归一化为对应于设备的全强度再现能力的配置的动态范围。 配置的动态范围可以比相对有限的动态范围更宽，更大或更深。
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公开(公告)号：US08675984B2
公开(公告)日：2014-03-18
申请号：US13410885
申请日：2012-03-02
申请人： Wenhui Jia , Ajit Ninan
发明人： Wenhui Jia , Ajit Ninan
CPC分类号： H04N5/235 , G06T5/50 , G06T2207/20208
摘要： Techniques are provided to generate high or wide dynamic range image from two or more input images of different exposure settings by directly merging coefficients derived from the input images in a transform domain. Energy values may be determined from coefficients blocks derived from the input images. The energy values may be compared with thresholds to determine weight factors for the coefficient blocks. An output coefficient block in the transform domain, used in or used to generate the output image, may be determined as a weighted combination of the coefficient blocks in the transform domain derived from the input images. If input images are compressed in transform domain, an output image can be generated without performing decompression in transform domain.
摘要翻译： 提供技术以通过直接合并从变换域中的输入图像导出的系数来从不同曝光设置的两个或更多个输入图像生成高或宽动态范围图像。 可以从从输入图像导出的系数块确定能量值。 能量值可以与阈值进行比较，以确定系数块的权重因子。 用于或用于生成输出图像的变换域中的输出系数块可以被确定为从输入图像导出的变换域中的系数块的加权组合。 如果输入图像在变换域中被压缩，则可以生成输出图像而不在变换域中执行解压缩。
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公开(公告)号：US20130286037A1
公开(公告)日：2013-10-31
申请号：US13814584
申请日：2011-08-25
申请人： Ajit Ninan , Wenhui Jia
发明人： Ajit Ninan , Wenhui Jia
IPC分类号： G09G5/10
CPC分类号： G09G5/10 , G09G3/3426 , G09G5/346 , G09G2320/062 , G09G2320/0646 , G09G2360/16
摘要： Techniques for displaying images of different dynamic ranges in a display system are provided. In some embodiments, images that have a number of dynamic ranges may be normalized to a configured dynamic range that corresponds to the full intensity reproduction capability of the device. The configured dynamic range may be wider, greater, or deeper than the relatively limited dynamic range.
摘要翻译： 提供了在显示系统中显示不同动态范围的图像的技术。 在一些实施例中，具有多个动态范围的图像可以被归一化为对应于设备的全强度再现能力的配置的动态范围。 配置的动态范围可以比相对有限的动态范围更宽，更大或更深。
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