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公开(公告)号：US20240078648A1
公开(公告)日：2024-03-07
申请号：US18101957
申请日：2023-01-26
申请人： Apple Inc.
CPC分类号： G06T5/009 , G06T5/20 , G06T5/40 , G06V10/60 , G06V10/751 , G06V10/758
摘要： This disclosure is directed towards tone mapping systems and methods that preserve contrast of fine features of an image and avoid brightening monotonic regions of the image. To preserve contrast and avoiding brightening of the monotonic regions, an image processing circuitry may include hardware that enables determining pixel statistics of an image, generating a tone mapping that is configured to adjust the color values of pixels in the image, and applying the tone mapping to at least the low frequency component of the image to produce an output image where the contrast of the fine details is preserved. In addition, the image processing circuitry may include hardware that enables adjusting the tone mapping based on variance bins in a histogram of pixel values and applying the adjusted tone mapping to produce an output image where the monotonic regions are not brightened.
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公开(公告)号：US20240078961A1
公开(公告)日：2024-03-07
申请号：US18076363
申请日：2022-12-06
申请人： Apple Inc.
发明人： Wanqing Xin , Yang Xu , Mohammad Ali Jangda , Jenny Hu , Koorosh Aflatooni , Giovanni Corradini , Martin Kocicka , Alexey Kornienko , Asha G Karvaje , Aishwarya Prem Renu , Andrew D Pangborn , Chaohao Wang , Yingying Tang , Arthur L Spence , Mahesh B Chappalli
IPC分类号： G09G3/32
CPC分类号： G09G3/32 , G09G2310/08 , G09G2320/0295 , G09G2320/046 , G09G2320/0613 , G09G2320/0626 , G09G2320/103 , G09G2330/023 , G09G2360/144 , G09G2360/16
摘要： Systems and methods are described herein to control brightness based on image content or other inputs to a display system. A dual-control system may integrate both slow control operations and fast control operations into a cohesive brightness management system. By using both shorter-term (e.g., fast control) and longer-term (e.g., slow control) brightness adjustment operations, the electronic device may quickly respond to high luminance and high brightness situations that may cause burn-in into the display, image artifacts, or other damage. Responding quickly to these high consumption situations may prevent damage or perceivable upset to an ongoing process, among other benefits.
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公开(公告)号：US11094038B1
公开(公告)日：2021-08-17
申请号：US17074254
申请日：2020-10-19
申请人： Apple Inc.
发明人： Alexey Kornienko
摘要： An electronic device may include an electronic display to display an image based on scaled image data and variable scaling circuitry to generate the scaled image data. Generating the scaled image data may include receiving input pixel values in a first resolution and determining multiple tap point locations based on a scaling ratio to be applied to the input pixel values. Generating the scaled image data may also include determining weighting coefficients based on a scaling curve and the tap point locations, and weighting the input pixel values based on the weighting coefficients. The variable scaling circuitry may generate the scaled image data at a second resolution based on the aggregation of the weighted input pixel values.
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公开(公告)号：US20240331119A1
公开(公告)日：2024-10-03
申请号：US18742998
申请日：2024-06-13
申请人： Apple Inc.
CPC分类号： G06T5/92 , G06T5/40 , G06T2207/20208
摘要： Methods and systems include determining an upper boundary of brightness values of high-dynamic range image content. Using the determined upper boundary, end points of bins of histogram values are determined. Using the determined end points of the bins of histogram values, luma values are allocated to the bins. The high-dynamic range image content is processed based at least in part on the allocations to the bins. Image data including the processed high-dynamic range image content is displayed via an electronic display.
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公开(公告)号：US20240105131A1
公开(公告)日：2024-03-28
申请号：US17934570
申请日：2022-09-22
申请人： Apple Inc.
IPC分类号： G09G3/34
CPC分类号： G09G3/3413 , G09G3/342 , G09G2310/08 , G09G2320/0242 , G09G2320/066 , G09G2320/0666 , G09G2320/0686
摘要： A device may include an electronic display to display an image frame based on first and second color component input image data. The electronic display may include a first illuminator to generate a first light at a first brightness level, a second illuminator to generate a second light of a different color at a second brightness level, a first set of pixel locations to emit the first light based on a first set of pixel values, and a second set of pixel locations to emit the second light based on a second set of pixel values. The electronic device may also include pixel contrast control circuitry that determines the first brightness level and the first set of pixel values based on the first color component input image data and determines the second brightness level and the second set of pixel values based on the second color component input image data.
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公开(公告)号：US20220067891A1
公开(公告)日：2022-03-03
申请号：US17362923
申请日：2021-06-29
申请人： Apple Inc.
摘要： Methods and systems include determining an upper boundary of brightness values of high-dynamic range image content. Using the determined upper boundary, end points of bins of histogram values are determined. Using the determined end points of the bins of histogram values, luma values are allocated to the bins. The high-dynamic range image content is processed based at least in part on the allocations to the bins. Image data including the processed high-dynamic range image content is displayed via an electronic display.
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公开(公告)号：US12026861B2
公开(公告)日：2024-07-02
申请号：US17362923
申请日：2021-06-29
申请人： Apple Inc.
CPC分类号： G06T5/92 , G06T5/40 , G06T2207/20208
摘要： Methods and systems include determining an upper boundary of brightness values of high-dynamic range image content. Using the determined upper boundary, end points of bins of histogram values are determined. Using the determined end points of the bins of histogram values, luma values are allocated to the bins. The high-dynamic range image content is processed based at least in part on the allocations to the bins. Image data including the processed high-dynamic range image content is displayed via an electronic display.
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公开(公告)号：US20240105132A1
公开(公告)日：2024-03-28
申请号：US18452802
申请日：2023-08-21
申请人： Apple Inc.
发明人： Chengrui Le , Fang-Cheng Lin , Alexey Kornienko
CPC分类号： G09G3/3413 , G09G3/342 , G09G3/36 , G09G2320/0646 , G09G2360/16
摘要： A device may include an electronic display having a backlight that generates light and multiple display pixels that modulate the amount of generated light emitted from the electronic display based on compensated image data. The backlight may include multiple illuminators that generate the light, and a first color component illuminator may have a slower response rate than a second color component illuminator. The device may also include image processing circuitry that generates the compensated image data by compensating input image data for a color shift associated with a change in brightness of the backlight and the slower response rate of the first color component illuminator. The input image data may be compensated by increasing first color component pixel values of the input image data relative to second color component pixel values of the input image data, and the compensated image data may be output to the electronic display.
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公开(公告)号：US11776492B1
公开(公告)日：2023-10-03
申请号：US17934568
申请日：2022-09-22
申请人： Apple Inc.
发明人： Chengrui Le , Fang-Cheng Lin , Alexey Kornienko
CPC分类号： G09G3/3413 , G09G3/342 , G09G3/36 , G09G2320/0646 , G09G2360/16
摘要： A device may include an electronic display having a backlight that generates light and multiple display pixels that modulate the amount of generated light emitted from the electronic display based on compensated image data. The backlight may include multiple illuminators that generate the light, and a first color component illuminator may have a slower response rate than a second color component illuminator. The device may also include image processing circuitry that generates the compensated image data by compensating input image data for a color shift associated with a change in brightness of the backlight and the slower response rate of the first color component illuminator. The input image data may be compensated by increasing first color component pixel values of the input image data relative to second color component pixel values of the input image data, and the compensated image data may be output to the electronic display.
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