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公开(公告)号：EP4189968A1
公开(公告)日：2023-06-07
申请号：EP21755873.3
申请日：2021-08-03
发明人： ATLURU, Chaitanya , NINAN, Ajit
IPC分类号： H04N21/81 , H04N21/218 , H04N21/2662 , H04N21/2343 , H04N21/845 , H04N21/44 , H04N21/2387 , H04N19/177 , H04N19/114 , H04N19/167 , H04N19/597 , H04N19/70
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公开(公告)号：EP3988187A1
公开(公告)日：2022-04-27
申请号：EP21206636.9
申请日：2018-04-10
发明人： NINAN, Ajit , MAMMEN, Neil , BROWN, Tyrome
IPC分类号： A63F13/26
摘要： Spatial information that describes spatial locations of visual objects as in a three-dimensional (3D) image space as represented in one or more multi-view unlayered images is accessed. Based on the spatial information, a cinema image layer and one or more device image layers are generated from the one or more multi-view unlayered images. A multi-layer multi-view video signal comprising the cinema image layer and the device image layers is sent to downstream devices for rendering.
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公开(公告)号：EP3824634A1
公开(公告)日：2021-05-26
申请号：EP19743093.7
申请日：2019-07-15
发明人： NINAN, Ajit
IPC分类号： H04N21/2343 , G06F3/01 , G06T5/00 , H04N21/6547 , H04N21/6587
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公开(公告)号：EP3516882B1
公开(公告)日：2020-10-28
申请号：EP17769175.5
申请日：2017-09-18
发明人： ATLURU, Chaitanya , NINAN, Ajit
IPC分类号： H04N21/4728
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公开(公告)号：EP2777037A1
公开(公告)日：2014-09-17
申请号：EP12846847.7
申请日：2012-11-07
发明人： NINAN, Ajit , HUANG, Qifan , MATURI, Greg , MAMMEN, Neil , KRONROD, James
CPC分类号： G06F1/3265 , G09G3/2074 , G09G3/342 , G09G3/36 , G09G2320/064 , G09G2320/0646 , G09G2320/0653 , G09G2330/025
摘要： Techniques are provided to provide various pulse width modulation (PWM) schemes to embodiments of dual modulator display systems that may comprise a backlight of individually addressable and controllable light emitters. The backlight provides illumination to a light modulator for further conditioning of the light to be presented to a viewer. The backlight may be striped and each stripe is assigned a PWM scheme that effectively increases the bit depth of the controller for each stripe. The display system may allow a better matching of PWM periods to LCD frame rates to reduce visual artifacts. In another embodiment, the display system may detect a small bright feature to be rendered in the image data and, with a pre-assignment of light emitters to different partitions, the backlight controller may drive a subset of the light emitters according to the partitions.
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公开(公告)号：EP2748792A1
公开(公告)日：2014-07-02
申请号：EP13747604.0
申请日：2013-07-31
发明人： SHAH, Ankur , NINAN, Ajit , JIA, Wenhui , TONG, Huiming , YANG, Qiaoli , TEN, Arkady , WANG, Gaven
CPC分类号： H04N19/136 , G06K9/4652 , G06T5/009 , G06T5/50 , G06T7/90 , G06T2207/20008 , G06T2207/20024 , G06T2207/20208 , H04N19/117 , H04N19/119 , H04N19/124 , H04N19/182 , H04N19/184 , H04N19/186 , H04N19/33 , H04N19/44 , H04N19/46
摘要： Image encoding is described. Log-luminances in an HDR input image are histogrammed to generate a tone-map, along with which a log global tone-mapped luminance image is computed. The log global tone-mapped luminance image is downscaled. The log-luminances and the log global tone-mapped luminance image generate a log ratio image. Multi-scale resolution filtering the log ratio image generates a log multi-scale ratio image. The log multi-scale ratio image and the log luminances generate a second log tone-mapped image, which is normalized to output a tone-mapped image based on the downscaled log global tone-mapped luminance image and the normalized image. The HDR input image and the output tone-mapped image generate a second ratio image, which is quantized.
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公开(公告)号：EP4221263A1
公开(公告)日：2023-08-02
申请号：EP23154465.1
申请日：2023-02-01
摘要： Images of a user's head are acquired at a plurality of different orientational angles through image sensors operating in conjunction with a media consumption system. The acquired images of the user's head are used to select or predict a specific personalized head related transfer function for the user. Spatial audio rendered by audio speakers operating in conjunction with the media consumption system is adjusted or modified based at least in part on the specific personalized HRTF selected for the user.
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公开(公告)号：EP3853654A1
公开(公告)日：2021-07-28
申请号：EP19782859.3
申请日：2019-09-20
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公开(公告)号：EP3376749A1
公开(公告)日：2018-09-19
申请号：EP18165945.9
申请日：2012-04-16
发明人： JIA, Wenhui , TEN, Arkady , NINAN, Ajit , WARD, Gregory John , WANG, Gaven
IPC分类号： H04N1/407 , H04N1/41 , H04N1/40 , H04N1/46 , H04N9/04 , H04N19/30 , H04N1/60 , H04N9/67 , H04N9/77
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.
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