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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：US20130064462A1
公开(公告)日：2013-03-14
申请号：US13605368
申请日：2012-09-06
申请人： Ajit Ninan , Arkady Ten
发明人： Ajit Ninan , Arkady Ten
IPC分类号： G06T9/00
CPC分类号： H04N19/00533 , H04N19/44 , H04N19/46 , H04N19/60 , H04N19/85
摘要： A decoder receives for decoding and post-processing for display an HDR (high dynamic range) image comprising a first coded image (e.g., a JPEG-HDR baseline image) and a second coded image (e.g., a JPEG-HDR ratio image). The first coded image is partially decoded and post-processed according to a post-processing command (e.g., scaling) to output a first decoded and post-processed image. The second coded image is also partially decoded and post-processed according to the post-processing command to output a second decoded and post-processed image. The first and the second decoded and post-processed images are combined to output a decoded HDR image according to the post-processing command.
摘要翻译： 解码器接收用于解码和后处理以显示包括第一编码图像（例如，JPEG-HDR基线图像）和第二编码图像（例如，JPEG-HDR比图像）的HDR（高动态范围）图像。 第一编码图像根据后处理命令（例如缩放）被部分解码和后处理，以输出第一解码和后处理图像。 第二编码图像也根据后处理命令进行部分解码和后处理，以输出第二解码和后处理图像。 第一和第二解码和后处理图像被组合以根据后处理命令输出解码的HDR图像。
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公开(公告)号：US08781238B2
公开(公告)日：2014-07-15
申请号：US13605368
申请日：2012-09-06
申请人： Ajit Ninan , Arkady Ten
发明人： Ajit Ninan , Arkady Ten
CPC分类号： H04N19/00533 , H04N19/44 , H04N19/46 , H04N19/60 , H04N19/85
摘要： A decoder receives for decoding and post-processing for display an HDR (high dynamic range) image comprising a first coded image (e.g., a JPEG-HDR baseline image) and a second coded image (e.g., a JPEG-HDR ratio image). The first coded image is partially decoded and post-processed according to a post-processing command (e.g., scaling) to output a first decoded and post-processed image. The second coded image is also partially decoded and post-processed according to the post-processing command to output a second decoded and post-processed image. The first and the second decoded and post-processed images are combined to output a decoded HDR image according to the post-processing command.
摘要翻译： 解码器接收用于解码和后处理以显示包括第一编码图像（例如，JPEG-HDR基线图像）和第二编码图像（例如，JPEG-HDR比图像）的HDR（高动态范围）图像。 第一编码图像根据后处理命令（例如缩放）被部分解码和后处理，以输出第一解码和后处理图像。 第二编码图像也根据后处理命令进行部分解码和后处理，以输出第二解码和后处理图像。 第一和第二解码和后处理图像被组合以根据后处理命令输出解码的HDR图像。
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公开(公告)号：US07057624B2
公开(公告)日：2006-06-06
申请号：US10695035
申请日：2003-10-28
申请人： Arkady Ten
发明人： Arkady Ten
IPC分类号： G09G5/02
CPC分类号： G01J3/46 , G09G5/02 , G09G2320/0693
摘要： The invention relates to techniques for light leakage compensation in a multi-channel display device. The invention may be particularly useful in calculating single-channel emission spectra for liquid crystal displays (LCD). In order to accurately model and calibrate a display device, an accurate spectral output estimate for each of the individual color channels is needed. The invention provides techniques to compensate for light leakage from adjacent color channels that cause hue shifts in the images reconstructed by the display device. In accordance with the invention, a light leakage emission spectrum can be determined for each color channel of a display based on a measured emission spectrum for the display at a minimum level and assumed emission spectra for light sources in the display. A single-channel emission spectrum is the difference between a cumulative color channel emission spectrum measurement and the light leakage spectra of adjacent color channels.
摘要翻译： 本发明涉及多通道显示装置中的漏光补偿技术。 本发明在计算液晶显示器（LCD）的单通道发射光谱时可能特别有用。 为了准确地对显示装置进行建模和校准，需要为每个单独颜色通道提供准确的光谱输出估计。 本发明提供了补偿来自相邻颜色通道的光泄漏的技术，其导致由显示装置重建的图像中的色相偏移。 根据本发明，可以基于用于显示器的测量的发射光谱在最低水平上确定显示器的每个颜色通道的漏光发射光谱，并且对于显示器中的光源采用假定的发射光谱。 单通道发射光谱是累积色彩通道发射光谱测量和相邻色彩通道的漏光光谱之间的差异。
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公开(公告)号：US20050088389A1
公开(公告)日：2005-04-28
申请号：US10695545
申请日：2003-10-28
申请人： Arkady Ten
发明人： Arkady Ten
IPC分类号： G01J3/28 , G01J3/46 , G02F1/13 , G02F1/13357 , G09G5/02 , H04N1/60 , H04N9/30 , H04N9/31 , H04N9/73 , H04N17/04 , G09G3/36
CPC分类号： G09G5/02 , G09G2320/0693 , H04N1/603 , H04N9/30 , H04N9/3102 , H04N9/3182 , H04N9/73 , H04N17/04
摘要： In general, the invention relates to techniques for reconstructing color channels in a multi-channel display device. The invention may be particularly useful in reconstructing the light source spectra for the color channels of liquid crystal displays (LCD). In order to accurately model and calibrate a display device, an accurate light source spectrum estimate for each of the individual color channels is needed. In accordance with the invention, a light source spectrum can be determined for each color channel of a display based on measured emission spectra for the color channels, an inverted contrast ratio for the display, and an assumed transmission spectrum for a light valve in the display. The invention provides techniques to compensate for light leakage from adjacent color channels with regards to wavelength dependent transmissions that cause hue shifts in images reconstructed by the display device.
摘要翻译： 通常，本发明涉及用于重建多声道显示装置中的色彩通道的技术。 本发明可以在重建用于液晶显示器（LCD）的颜色通道的光源光谱中特别有用。 为了准确地对显示装置进行建模和校准，需要针对每个单独颜色通道的准确的光源频谱估计。 根据本发明，可以基于测量的彩色通道的发射光谱，显示器的反向对比度以及显示器中的光阀的假设透射光谱来确定显示器的每个颜色通道的光源光谱 。 本发明提供了用于补偿来自相邻颜色通道的关于导致由显示装置重建的图像中的色调偏移的波长相关传输的光泄漏的技术。
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公开(公告)号：US08159553B2
公开(公告)日：2012-04-17
申请号：US12338951
申请日：2008-12-18
申请人： Arkady Ten
发明人： Arkady Ten
CPC分类号： H04N1/6033
摘要： A method of generating a color characterization model for an input imaging device includes capturing a target having plural patches using the input imaging device to produce plural digital values in a device-dependent color space, the plural digital values having corresponding target measurements in a color characterization set. The method further includes determining if any of the plural digital values are collinear with each other, and removing, in a case where it is determined that digital values are collinear with each other, at least one of the collinear digital values and corresponding target measurements from the color characterization data set. In addition, the method includes generating the color characterization model for the input imaging device based on the plural digital values and corresponding target measurements remaining in the color characterization set. An apparatus for generating a color characterization model for an input imaging device is also provided.
摘要翻译： 生成输入成像装置的颜色表征模型的方法包括使用输入成像装置捕获具有多个贴片的目标，以在依赖于装置的色彩空间中产生多个数字值，所述多个数字值在颜色表征中具有相应的目标测量值 组。 该方法还包括确定多个数字值中的任一个是否彼此共线，并且在确定数字值彼此共线的情况下，去除共线数字值和对应的目标测量中的至少一个， 颜色表征数据集。 此外，该方法包括基于剩余在颜色表征集合中的多个数字值和对应的目标测量值来生成用于输入成像装置的颜色表征模型。 还提供了一种用于生成用于输入成像装置的颜色表征模型的装置。
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公开(公告)号：US08736840B1
公开(公告)日：2014-05-27
申请号：US12785462
申请日：2010-05-23
申请人： Arkady Ten
发明人： Arkady Ten
CPC分类号： G01J3/46 , G01J3/0289 , G09G3/006 , G09G3/2003 , G09G2340/06 , G09G2360/145
摘要： One embodiment of a method for finding an aim position of a measuring device may include building a color model for an imaging device, initializing a color encoding image, displaying or printing the image on the imaging device, acquiring measurement with the measuring device, converting the measurement into imaging device code values using the color model, calculating said aim position from said device code values. The color encoding image sets one-to-one relationship between coordinates and colors. The image is output on the imaging device and measured by the measuring device. The measurement is converted using the color model to the device code values. The aim position then calculated from position of the device code values in the encoding image.
摘要翻译： 用于找到测量装置的目标位置的方法的一个实施例可以包括建立成像装置的颜色模型，初始化颜色编码图像，在成像装置上显示或打印图像，使用测量装置获取测量值， 使用颜色模型测量成像设备代码值，从所述设备代码值计算所述目标位置。 颜色编码图像设置坐标和颜色之间的一对一关系。 图像在成像装置上输出并由测量装置测量。 使用颜色模型将测量值转换为设备代码值。 然后根据编码图像中的设备代码值的位置计算目标位置。
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公开(公告)号：US20070088535A1
公开(公告)日：2007-04-19
申请号：US11251706
申请日：2005-10-17
申请人： Arkady Ten
发明人： Arkady Ten
IPC分类号： G06F13/10
CPC分类号： H04N1/603 , G09G5/026 , G09G2320/0209 , G09G2320/0242 , G09G2320/0285 , G09G2320/0673 , H04N17/00
摘要： The invention is directed to generic spectral modeling techniques applicable to a variety of imaging devices. A generic spectral model may include a general channel model capable of modeling spectral characteristics of imaging devices and a look-up table (LUT) capable of compensating for cross-channel interaction and possibly other characteristics that are difficult to model, such as non-linear characteristics of imaging devices. In this way, the generic spectral model includes aspects of both a conventional physical model and a conventional brute force model. Digital values, i.e., pixel counts, of each channel of an imaging device are adjusted by the LUT of the generic spectral model to include cross-channel interaction. The channel model then accurately predicts spectral emissions for each channel of the imaging device based on the adjusted digital values. The generic spectral model converts the predicted spectral emissions to a device-independent color space.
摘要翻译： 本发明涉及适用于各种成像装置的通用光谱建模技术。 通用光谱模型可以包括能够建模成像设备的光谱特性的通用通道模型和能够补偿交叉通道相互作用的查找表（LUT）以及可能的难以建模的其他特性的查找表（LUT），例如非线性 成像装置的特点。 以这种方式，通用光谱模型包括常规物理模型和常规暴力模型的方面。 成像设备的每个通道的数字值，即，像素数量由通用光谱模型的LUT进行调整，以包括跨信道交互。 然后，信道模型基于经调整的数字值精确地预测成像设备的每个通道的频谱发射。 通用光谱模型将预测的光谱发射转换为与器件无关的色彩空间。
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