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    DETECTING STATIONARY REGIONS FOR ORGANIC LIGHT EMITTING DIODE (OLED) TELEVISION (TV) LUMINANCE REDUCTION
    3.
    发明申请
    DETECTING STATIONARY REGIONS FOR ORGANIC LIGHT EMITTING DIODE (OLED) TELEVISION (TV) LUMINANCE REDUCTION 有权

    公开(公告)号：US20230047673A1

    公开(公告)日：2023-02-16

    申请号：US17818679

    申请日：2022-08-09

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Joonsoo Kim ,  Kamal Jnawali ,  Chenguang Liu

    IPC: G09G3/3208

    Abstract: One embodiment provides a computer-implemented method that includes adaptively adjusting a detection time interval based on stationary region type of one or more stationary regions and a scene length in a video. The method further includes tracking pixels of the one or more stationary regions from a number of previous frames to a current frame in the video in real-time. A minimum and a maximum of max-Red-Green-Blue (MaxRGB) pixel values are extracted from each frame in a scene of the video as minimum and a maximum temporal feature maps for representing pixel variance over time. Segmentation and block matching are applied on the minimum and maximum temporal feature maps to detect the stationary region type.

    HDR TONE MAPPING METHODS WITH SCENE ADAPTIVE PARAMETERIZED TONE MAP FUNCTION
    6.
    发明申请
    HDR TONE MAPPING METHODS WITH SCENE ADAPTIVE PARAMETERIZED TONE MAP FUNCTION 审中-公开
    具有场景自适应参数色调功能的HDR色调映射方法

    公开(公告)号：US20160381363A1

    公开(公告)日：2016-12-29

    申请号：US14986563

    申请日：2015-12-31

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Li Tao ,  Yeong-Taeg Kim ,  Chenguang Liu ,  Pradeep Nagesh

    IPC: H04N19/124 ,  H04N19/44

    CPC classification number: G06T5/009 ,  G06T2207/20208

    Abstract: A method, apparatus, and non-transitory computer readable medium for video tone mapping. The method includes receiving the video and determining parameters of a tone mapping function defined by a Bezier curve for processing the video. The method also includes generating, by at least one processor, a tone mapped video by applying the tone mapping function to the video using the determined parameters.

    Abstract translation: 用于视频色调映射的方法，装置和非暂时计算机可读介质。 该方法包括接收视频并确定由贝塞尔曲线定义的色调映射函数的参数以处理视频。 该方法还包括由至少一个处理器通过使用确定的参数将音调映射功能应用于视频来产生色调映射的视频。

    HDR tone mapping based on creative intent metadata and ambient light
    8.
    发明授权
    HDR tone mapping based on creative intent metadata and ambient light 有权

    公开(公告)号：US12020413B2

    公开(公告)日：2024-06-25

    申请号：US17809532

    申请日：2022-06-28

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Dung Trung Vo ,  Chenguang Liu ,  McClain C. Nelson ,  William Mandel ,  Soojung Hyun

    IPC: G06T5/92 ,  G06T5/40

    CPC classification number: G06T5/92 ,  G06T5/40

    Abstract: One embodiment provides a method comprising determining multi-dimensional metadata corresponding to an input image, and determining ambient light information indicative of a level of ambient light in an ambient environment of a display device. The multi-dimensional metadata comprises a cumulative distribution function (CDF) of pixels in the input image. The method further comprises determining, based on the multi-dimensional metadata and the ambient light information, one or more gains that adaptively compensate for the level of ambient light in the ambient environment. The method further comprises generating a tone mapping function based on the one or more gains, and applying the tone mapping function to the input image to generate a tone-mapped image that adaptively compensates for the level of ambient light in the ambient environment. The tone-mapped image is provided to the display device for presentation.

    HDR TONE MAPPING METHODS WITH SCENE ADAPTIVE PARAMETERIZED TONE MAP FUNCTION
    9.
    发明公开
    HDR TONE MAPPING METHODS WITH SCENE ADAPTIVE PARAMETERIZED TONE MAP FUNCTION 审中-公开

    公开(公告)号：US20240046437A1

    公开(公告)日：2024-02-08

    申请号：US18453905

    申请日：2023-08-22

    Applicant: Samsung Electronics Co., Ltd.

    Inventor： Li Tao ,  Yeong-Taeg Kim ,  Chenguang Liu ,  Pradeep Nagesh

    IPC: G06T5/00 ,  H04N19/00

    CPC classification number: G06T5/009 ,  H04N19/00 ,  G06T2207/20208

    Abstract: A method includes receiving a quantized video having a first maximum luminance level or brightness associated with a mastering display with which the quantized video was mastered. The method also includes de-quantizing the quantized video in order to generate a de-quantized video. The method further includes applying a scene-adaptive tone mapping function to the de-quantized video in order to generate a tone mapped video. In addition, the method includes displaying the tone mapped video on a target display. The tone mapped video has a second maximum luminance level or brightness associated with the target display, and the second maximum luminance level or brightness is less than the first maximum luminance level or brightness.

    SELF-EMITTING DISPLAY (SED) BURN-IN PREVENTION BASED ON STATIONARY LUMINANCE REDUCTION
    10.
    发明申请
    SELF-EMITTING DISPLAY (SED) BURN-IN PREVENTION BASED ON STATIONARY LUMINANCE REDUCTION 有权

    公开(公告)号：US20230050664A1

    公开(公告)日：2023-02-16

    申请号：US17818681

    申请日：2022-08-09

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Kamal Jnawali ,  Joonsoo Kim ,  Chenguang Liu ,  Chang Su

    IPC: G06T5/00

    Abstract: One embodiment provides a computer-implemented method that includes providing a dynamic list structure that stores one or more detected object bounding boxes. Temporal analysis is applied that updates the dynamic list structure with object validation to reduce temporal artifacts. A two-dimensional (2D) buffer is utilized to store a luminance reduction ratio of a whole video frame. The luminance reduction ratio is applied to each pixel in the whole video frame based on the 2D buffer. One or more spatial smoothing filters are applied to the 2D buffer to reduce a likelihood of one or more spatial artifacts occurring in a luminance reduced region.

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