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公开(公告)号：WO2023013944A1
公开(公告)日：2023-02-09
申请号：PCT/KR2022/010855
申请日：2022-07-25
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： VO, Dung Trung , LIU, Chenguang , SU, Chang , NELSON, McClain Craig , ATHREYA, Madhu , MANDEL, William , HYUN, Soojung
Abstract: An embodiment provides a method comprising receiving an input content, and receiving ambient contextual data indicative of one or more ambient lighting conditions of an environment including a display device. The input content has corresponding metadata that at least partially represents a creative intent indicative of how the input content is intended to be viewed. The method further comprises adaptively correcting the input content based on the ambient contextual data to preserve the creative intent, and providing the corrected input content to the display device for presentation. The adaptively correcting comprises applying automatic white balancing to the input content to correct color tone of the input content.
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公开(公告)号：WO2022098054A1
公开(公告)日：2022-05-12
申请号：PCT/KR2021/015698
申请日：2021-11-02
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： SU, Chang , LIU, Chenguang , NAGESH, Pradeep
Abstract: One embodiment provides a method comprising determining a first representation of a source gamut of an input content in a first two-dimensional (2D) device-independent color space, determining a second representation of a target gamut of a display device in a second 2D device-independent color space, and determining a color transition protection zone (TPZ) based on the source gamut and the target gamut. The method further comprises utilizing a color gamut mapping (CGM) module to perform, based on the TPZ, linear color gamut compression from the first 2D device-independent color space to the second 2D device-independent color space if the target gamut is narrower than the source gamut. The method further comprises utilizing the same CGM module to perform, based on the TPZ, linear color gamut extension from the first 2D device-independent color space to the second 2D device-independent color space if the target gamut is wider than the source gamut.
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3.发明申请
公开(公告)号：WO2023018311A1
公开(公告)日：2023-02-16
申请号：PCT/KR2022/012147
申请日：2022-08-12
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： KIM, Joonsoo , JNAWALI, Kamal , LIU, Chenguang
IPC: H04N5/14 , H04N5/57 , G09G5/10 , G09G3/3208
Abstract: An 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 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.
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Patent Agency Ranking4.发明申请
公开(公告)号：WO2022103117A1
公开(公告)日：2022-05-19
申请号：PCT/KR2021/016229
申请日：2021-11-09
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： SU, Chang , LIU, Chenguang , NAGESH, Pradeep
Abstract: A method includes determining, by a computing device, a working color space of a source content and a resulting content. The computing device models color saturation variations of different hues in the working color space with one or more properties of responses of a human vision system (HVS) to color stimulus. The computing device generates one or more color saturation variation models based on the responses of the HVS to color stimulus. An input color is mapped from the source content to an output color in the working color space using the one or more color saturation variation models.
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公开(公告)号：WO2022075802A1
公开(公告)日：2022-04-14
申请号：PCT/KR2021/013882
申请日：2021-10-08
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： VO, Dung Trung , LIU, Chenguang , NELSON, McClain C. , MANDEL, William , HYUN, Soojung
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 distribution function of pixels in the input image. The method further comprises determining, based on 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 multi-dimensional metadata and 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.
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6.发明申请
公开(公告)号：WO2023048465A1
公开(公告)日：2023-03-30
申请号：PCT/KR2022/014112
申请日：2022-09-21
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： SU, Chang , LIU, Chenguang
Abstract: One embodiment provides a method comprising determining one or more coordinates representing one or more skin tones in a device-independent color space. The one or more skin tones can include one or more colors of human skin captured in one or more pieces of content. The method further comprises building a dual-core geometric model based on a distribution of the one or more skin tones in the device-independent color space. The method further comprises providing the dual-core geometric model to an electronic device for use in determining a likelihood that an input color of an input content is a skin tone. The input content is adaptively enhanced, based on the likelihood, for presentation on a display connected to the electronic device.
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7.发明申请
公开(公告)号：WO2023022539A1
公开(公告)日：2023-02-23
申请号：PCT/KR2022/012361
申请日：2022-08-18
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： KIM, Joonsoo , LIU, Chenguang
Abstract: An embodiment provides a computer-implemented method that includes providing a machine learning network including a global inverse tone mapping (GITM) structure and a local inverse tone mapping (LITM) structure that utilize one or more non-linear basis functions with one or more coefficient functions. The one or more non-linear basis functions learn linearly to facilitate combination with at least one convolution layer for jointly learning the machine learning network. A weighted mask (WM) is provided for reducing one or more visual artifacts, including one or more quantization artifacts in a smooth region of an output of the machine learning network.
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公开(公告)号：WO2022114729A1
公开(公告)日：2022-06-02
申请号：PCT/KR2021/017269
申请日：2021-11-23
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： LIU, Chenguang , MANDEL, William , VO, Dung Trung , HYUN, Soojung , NELSON, Mcclain Craig
Abstract: One embodiment provides a method comprising determining metadata corresponding to an input image, determining a black level of a display device and a peak luminance value of the display device, and determining a tone mapping function that adaptively compensates for the black level of the display device based on the metadata, the black level of the display device, and the peak luminance value of the display device. The metadata comprises a distribution of luminance values in the input image. The black level of the display device and the peak luminance value of the display device represent a lowest luminance value and a highest luminance value, respectively, achievable on the display device. The method further comprises applying the tone mapping function to the input image to generate a tone-mapped image that adaptively compensates for the black level of the display device and provided to the display device for presentation.
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