公开(公告)号：US12087249B2

公开(公告)日：2024-09-10

申请号：US18151902

申请日：2023-01-09

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chang Su ,  Chenguang Liu ,  Pradeep Nagesh

IPC: G09G5/02 ,  G09G5/00 ,  G09G5/10 ,  H04N1/60 ,  H04N5/57 ,  H04N9/64 ,  H04N9/68 ,  H04N9/69 ,  H04N9/79

CPC classification number: G09G5/02 ,  G09G5/005 ,  H04N9/68 ,  G09G2320/0666 ,  G09G2340/06

Abstract: A method includes modeling, by a computing device, color saturation variations of different hues in a working color space with one or more properties of responses of a human vision system (HVS) to color stimulus. The computing device further generates one or more color saturation variation models based on the responses of the HVS to color stimulus.

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.

公开(公告)号：US20240221134A1

公开(公告)日：2024-07-04

申请号：US18496317

申请日：2023-10-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Tingting Zhao ,  Chang Su ,  Chenguang Liu

IPC: G06T5/00

CPC classification number: G06T5/009 ,  G06T2207/20208

Abstract: One embodiment provides a computer-implemented method that includes employing a de-banding process based on image statistics in a dynamic range conversion system, including high dynamic range (HDR) to standard dynamic range (SDR) tone mapping (TM) process or SDR-to-HDR inverse tone mapping (ITM) process. A computing device performs the de-banding process in post-processing during a determination of one or more initial ITM explicit polynomial curve coefficients. One or more parameters of a weighing function of the one or more initial ITM explicit curve coefficients are utilized as one or more controlling knots for balancing a de-banding effect and preserving local detail.

公开(公告)号：US20230197035A1

公开(公告)日：2023-06-22

申请号：US18173676

申请日：2023-02-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Chang Su ,  Chenguang Liu ,  Pradeep Nagesh

IPC: G09G5/06

CPC classification number: G09G5/06 ,  G09G2340/06

Abstract: One embodiment provides a method comprising determining a first representation of a source gamut of an input content in a first (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.

公开(公告)号：US11615763B2

公开(公告)日：2023-03-28

申请号：US17460009

申请日：2021-08-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Chang Su ,  Chenguang Liu ,  Pradeep Nagesh

IPC: G09G5/02 ,  G09G5/06 ,  H04N1/60 ,  H04N9/64 ,  H04N9/69

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.

公开(公告)号：US20220157273A1

公开(公告)日：2022-05-19

申请号：US17491085

申请日：2021-09-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Chang Su ,  Chenguang Liu ,  Pradeep Nagesh

IPC: G09G5/02 ,  H04N9/68 ,  G09G5/00

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.

公开(公告)号：US20220139355A1

公开(公告)日：2022-05-05

申请号：US17460009

申请日：2021-08-27

Applicant: Samsung Electronics Co., Ltd.

Inventor： Chang Su ,  Chenguang Liu ,  Pradeep Nagesh

IPC: G09G5/06

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.

公开(公告)号：US20230360595A1

公开(公告)日：2023-11-09

申请号：US18143266

申请日：2023-05-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: G09G3/3208 ,  G06V20/40 ,  G06T5/40 ,  G06T5/00

CPC classification number: G09G3/3208 ,  G06V20/41 ,  G06T5/40 ,  G06T5/002 ,  G06V2201/09 ,  G06T2207/10024 ,  G06T2207/10016 ,  G09G2320/046 ,  G09G2320/0257 ,  G09G2320/0233 ,  G09G2320/0266

Abstract: One embodiment provides a computer-implemented method that includes receiving region information from a stationary region detection process for a video. A processor performs a flat region ghosting artifact removal process that updates the region information with a flat region indicator utilizing the region information and the video. The processor further performs a region based luminance reduction process utilizing the updated region information with the flat region indicator for display ghosting artifact removal and burn-in protection.

公开(公告)号：US20230039667A1

公开(公告)日：2023-02-09

申请号：US17807099

申请日：2022-06-15

Applicant: SAMSUNG ELECTRONICS CO., LTD.

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

IPC: H04N9/73 ,  G06T5/00 ,  H04N9/64 ,  H04N9/68

Abstract: One 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.

公开(公告)号：US20200258473A1

公开(公告)日：2020-08-13

申请号：US16786355

申请日：2020-02-10

Applicant: Samsung Electronics Co., Ltd.

Inventor： Chang Su ,  Pradeep Nagesh ,  Yeong-Taeg Kim ,  Li Tao

IPC: G09G5/02

Abstract: One embodiment provides a method comprising determining a target color gamut of a display device, an inner zone of the target color gamut, and an outer zone of the target color gamut. The method further comprises dynamically determining, based on the inner zone and the outer zone, a path along which an input color in a source color gamut of an input content moves. The input color is outside the inner zone. The method further comprises mapping the input color from the source color gamut to an output color in the outer zone based on the path. The input color is rendered as the output color during presentation of the input content on the display device.