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公开(公告)号：US20240221136A1
公开(公告)日：2024-07-04
申请号：US18604784
申请日：2024-03-14
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Weiwei XU , Jinsong WEN , Lei WU , Zhongke MA , Yanbing JIA , Quanhe YU , Zizhong WANG , Yichuan WANG , Hu CHEN
CPC classification number: G06T5/92 , G06T7/11 , G06T2207/10016 , G06T2207/10024 , G06T2207/20208
Abstract: This application provides a tone mapping method including: obtaining a to-be-displayed image frame and metadata which includes at least one metadata information unit; segmenting the to-be-displayed image frame into a plurality of segmentation regions in a target segmentation manner, and determining a correspondence between the plurality of segmentation regions and the at least one metadata information unit; and for an ith pixel: determining, for a plurality of pixels included in a preset region, at least one related segmentation region to which the plurality of pixels belong, and determining a related metadata information unit corresponding to each related segmentation region; obtaining a tone mapping subvalue corresponding to the related segmentation region, and allocating a corresponding weighting factor to the related segmentation region; obtaining a tone mapping value based on the tone mapping subvalue and the weighting factor; and performing tone mapping based on the tone mapping value.
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公开(公告)号：US20230018004A1
公开(公告)日：2023-01-19
申请号：US17950494
申请日：2022-09-22
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jinsong WEN , Yiyang ZHANG , Yibo XING , Huanwen PENG , Jinqin AI , Yinting WANG , Yong GUO
Abstract: This application discloses a photographing method and apparatus, to overcome blurring that occurs during photographing. When a zoom ratio is greater than a first zoom ratio threshold, a long-focus camera is started to capture an image. A zoom ratio of the long-focus camera is greater than or equal to the first zoom ratio threshold. Because a high zoom ratio causes large shake, a rotational blur occurs in the image. According to the photographing method disclosed in this application, a first neural network model for rotational image deblurring is used to implement rotational image deblurring processing. In this way, high imaging quality of an image, a video, or a preview image is presented to a user to some extent, and the imaging effect may not be inferior to the effect of photographing with a tripod.
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Patent Agency Ranking
公开(公告)号：US20220101800A1
公开(公告)日：2022-03-31
申请号：US17550001
申请日：2021-12-14
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jinqin AI , Jinsong WEN , Yiyang ZHANG
IPC: G09G3/3291 , G09G3/3258
Abstract: The technology of this application relates to a voltage adjustment method and an electronic device. The method includes obtaining a target luminance value of current display of a display pixel, determining a voltage increment value based on the target luminance value, and adjusting, based on the voltage increment value, an initial cathode voltage of an OLED device corresponding to the display pixel, where after voltage adjustment, a change amount between a luminance value of the display pixel and the target luminance value falls within a preset range. This application may be applied to an electronic device, and display quality of a display screen can be improved while reducing power consumption of the display screen.
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公开(公告)号：US20250150525A1
公开(公告)日：2025-05-08
申请号：US19020563
申请日：2025-01-14
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Shuncai ZHONG , Jinsong WEN , Qiyan ZHAI , Wei ZHOU
Abstract: This application provides an image display method for an electronic device, an encoding method, and a related apparatus. The image display method for an electronic device includes: obtaining a to-be-processed image; obtaining high-luminance enhancement data, where the high-luminance enhancement data includes a high dynamic range layer (hdrLayer); obtaining initial backlight luminance of the electronic device; obtaining target backlight luminance of the electronic device based on the initial backlight luminance; performing luminance adjustment on the to-be-processed image based on the hdrLayer to obtain a target image for the target backlight luminance; and displaying the target image at the target backlight luminance. In this application, a luminance range of a screen can be fully utilized for image display, and optimal end-to-end experience is achieved.
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公开(公告)号：US20240223818A1
公开(公告)日：2024-07-04
申请号：US18604710
申请日：2024-03-14
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Weiwei XU , Jiantong ZHOU , Quanhe YU , Jinsong WEN , Yutong HU
IPC: H04N19/98 , G06T5/40 , H04N19/119
CPC classification number: H04N19/98 , G06T5/40 , H04N19/119
Abstract: Embodiments of this application provide a video encoding method, a video decoding method, and an apparatus. The video encoding apparatus may obtain source data, where the source data includes first high dynamic range HDR data and a first standard dynamic range SDR bitstream for same video data; map reconstructed data of the first SDR bitstream to second HDR data based on a correspondence between the reconstructed data of the first SDR bitstream and the first HDR data; determine a target residual value between the second HDR data and the first HDR data, where a bit width of the target residual value is less than or equal to a data bit width for encoding a first SDR video into the first SDR bitstream; encode the correspondence and the target residual value, to determine preset data; and transmit the first SDR bitstream to which the preset data is added.
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公开(公告)号：US20230325986A1
公开(公告)日：2023-10-12
申请号：US18334453
申请日：2023-06-14
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jinsong WEN , Jun DAI , Qiyan ZHAI , Yanbing JIA
CPC classification number: G06T5/009 , G09G3/2003 , G09G2360/16 , G06T2207/10024 , G09G2340/06 , G06T2207/20208
Abstract: This application discloses an image processing method and a related apparatus, to support display of an HDR image, display more dynamic ranges and image details, provide richer colors, and improve user experience. The image processing method includes: obtaining a first RGB image, where the first RGB image is an RGB image sensed by a photographing apparatus; converting the first RGB image into a second RGB image, where the second RGB image is an image meeting a BT2020 color gamut range; determining a first luminance value corresponding to the second RGB image, where the first luminance value indicates maximum luminance of each frame of image in the second RGB image; determining a target image based on the first luminance value and the second RGB image; and sending the target image to a display apparatus, so that the display apparatus displays the target image.
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7.发明申请公开(公告)号：US20200335048A1
公开(公告)日：2020-10-22
申请号：US16918988
申请日：2020-07-01
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jinsong WEN , Jinqin AI , Haixiao LIU
Abstract: A method, an apparatus, and a device for adjusting screen backlight brightness. The method includes: obtaining image information and information about an environment; determining human eye characteristic information based on the image information and the information about the environment, where the human eye characteristic information is related to a minimum magnitude of a brightness change perceptible to human eyes; obtaining information about a display screen, calculating a screen backlight decreasable ratio based on the information about the display screen, the human eye characteristic information, and the image information; and determining a screen pixel brightness compensation value based on the backlight decreasable ratio, adjusting backlight brightness based on the screen backlight decreasable ratio, and adjusting the screen pixel brightness value based on the screen pixel brightness compensation value.
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