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公开(公告)号：US11181977B2
公开(公告)日：2021-11-23
申请号：US16193913
申请日：2018-11-16
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Wenhui Jia
Abstract: Methods for using a head mounted display (HMD) can detect slippage of the HMD through the use of a comparison between, for example, a calibrated glint reference point and a glint reference point calculated during monitoring of glints during usage of the HMD.
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公开(公告)号：US09654781B2
公开(公告)日：2017-05-16
申请号：US14997950
申请日：2016-01-18
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Wenhui Jia , Ajit Ninan , Arkady Ten , Gregory John Ward
IPC: H04N19/136 , H04N9/77 , H04N5/235 , H04N19/169 , G06T9/00 , H04N9/67 , H04N19/50 , H04N19/30 , H04N19/186 , H04N19/124 , H04N19/44 , H04N19/70
CPC classification number: H04N19/124 , G06T9/00 , H04N5/2355 , H04N9/67 , H04N9/77 , H04N19/136 , H04N19/169 , H04N19/182 , H04N19/186 , H04N19/30 , H04N19/44 , H04N19/50 , H04N19/70
Abstract: 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：US20150302804A1
公开(公告)日：2015-10-22
申请号：US14788396
申请日：2015-06-30
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Ajit Ninan , Wenhui Jia
IPC: G09G3/34
CPC classification number: G09G3/3406 , G09G3/3426 , G09G2320/0238 , G09G2320/0626 , G09G2320/0646 , G09G2320/066 , G09G2360/144
Abstract: 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.
Abstract translation: 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：US09036042B2
公开(公告)日：2015-05-19
申请号：US13938795
申请日：2013-07-10
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Wenhui Jia , Ajit Ninan , Arkady Ten , Gregory John Ward
IPC: H04N5/228 , H04N9/73 , H04N5/46 , H04N11/02 , G06T9/00 , H04N9/67 , H04N9/77 , H04N5/235 , H04N19/169
CPC classification number: H04N19/124 , G06T9/00 , H04N5/2355 , H04N9/67 , H04N9/77 , H04N19/136 , H04N19/169 , H04N19/182 , H04N19/186 , H04N19/30 , H04N19/44 , H04N19/50 , H04N19/70
Abstract: 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.
Abstract translation: 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：US11670039B2
公开(公告)日：2023-06-06
申请号：US16809344
申请日：2020-03-04
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Wenhui Jia , Haricharan Lakshman , Ajit Ninan
CPC classification number: G06T15/205 , G06T3/0093 , G06T5/005 , G06T7/529 , G06T19/006 , H04N19/46 , G06T2207/10028 , G06T2215/16
Abstract: Bordering pixels delineating a texture hole region are identified in a target image. Depth values of the bordering pixels are automatically clustered into two depth value clusters. A specific estimation direction is selected from multiple candidate estimation directions for a texture hole pixel in a texture hole region. A depth value of the texture hole pixel is estimated by interpolating depth values of two bordering background pixels in the specific estimation direction. The estimated depth value is used to warp the texture hole pixel into a reference view represented by a temporal reference image. A pixel value of the texture hole pixel is predicted based on a reference pixel value of a reference pixel from the reference image to which the texture hole pixel is warped using the estimated depth value.
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Patent Agency Ranking
公开(公告)号：US10511837B2
公开(公告)日：2019-12-17
申请号：US16363024
申请日：2019-03-25
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Wenhui Jia , Ajit Ninan , Arkady Ten , Gregory John Ward
IPC: H04N19/124 , H04N19/136 , H04N19/169 , H04N19/44 , H04N5/235 , H04N9/67 , H04N9/77 , G06T9/00 , H04N19/182 , H04N19/186 , H04N19/30 , H04N19/50 , H04N19/70
Abstract: 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：US10121454B2
公开(公告)日：2018-11-06
申请号：US15435677
申请日：2017-02-17
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Ajit Ninan , Wenhui Jia
Abstract: 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.
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公开(公告)号：US10027961B2
公开(公告)日：2018-07-17
申请号：US15715052
申请日：2017-09-25
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Wenhui Jia , Ajit Ninan , Arkady Ten , Gregory John Ward
IPC: H04N19/124 , H04N19/44 , H04N9/77 , H04N5/235 , H04N19/182 , H04N19/136 , H04N19/186
CPC classification number: H04N19/124 , G06T9/00 , H04N5/2355 , H04N9/67 , H04N9/77 , H04N19/136 , H04N19/169 , H04N19/182 , H04N19/186 , H04N19/30 , H04N19/44 , H04N19/50 , H04N19/70
Abstract: 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：US09324278B2
公开(公告)日：2016-04-26
申请号：US14788396
申请日：2015-06-30
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Ajit Ninan , Wenhui Jia
IPC: G09G3/34
CPC classification number: G09G3/3406 , G09G3/3426 , G09G2320/0238 , G09G2320/0626 , G09G2320/0646 , G09G2320/066 , G09G2360/144
Abstract: 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.
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公开(公告)号：US20130294689A1
公开(公告)日：2013-11-07
申请号：US13938795
申请日：2013-07-10
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Wenhui Jia , Ajit Ninan , Arkady Ten , Gregory John Ward
IPC: G06T9/00
CPC classification number: H04N19/124 , G06T9/00 , H04N5/2355 , H04N9/67 , H04N9/77 , H04N19/136 , H04N19/169 , H04N19/182 , H04N19/186 , H04N19/30 , H04N19/44 , H04N19/50 , H04N19/70
Abstract: 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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