公开(公告)号：US20210383772A1

公开(公告)日：2021-12-09

申请号：US17407981

申请日：2021-08-20

Applicant: ATI Technologies ULC

Inventor： Keith Lee ,  David I. J. Glen ,  Jie Zhou ,  Yuxin Chen

IPC: G09G5/06

Abstract: Systems, apparatuses, and methods for reducing three dimensional (3D) lookup table (LUT) interpolation error while minimizing on-chip storage are disclosed. A processor generates a plurality of mappings from a first gamut to a second gamut at locations interspersed throughout a 3D representation of the pixel component space. For example, in one implementation, the processor calculates mappings for 17×17×17 vertices within the 3D representation. Other implementations can include other numbers of vertices. Rather than increasing the number of vertices to reduce interpolation error, the processor calculates mappings for centroids of the sub-cubes defined by the vertices within the 3D representation of the first gamut. This results in a smaller increase to the LUT size as compared to increasing the number of vertices. The centroid mappings are used for performing tetrahedral interpolation to map source pixels in the first gamut into the second gamut with a reduced amount of interpolation error.

公开(公告)号：US20210027437A1

公开(公告)日：2021-01-28

申请号：US17069523

申请日：2020-10-13

Applicant: ATI Technologies ULC

Inventor： Jie Zhou ,  David I. J. Glen

IPC: G06T5/00 ,  H04N5/235

Abstract: There are many instances where a standard dynamic range (“SDR”) overlay is displayed over high dynamic range (“HDR”) content on HDR displays. Because the overlay is SDR, the maximum brightness of the overlay is much lower than the maximum brightness of the HDR content, which can lead to the SDR elements being obscured if those elements have at least some transparency. The present disclosure provides techniques including modifying the luminance of either or both of the HDR and SDR content when an SDR layer with some transparency is displayed over HDR content. A variety of techniques are provided. In one example, a fixed adjustment is applied to pixels of one or both of the SDR layer and the HDR layer. The fixed adjustment comprises decreasing the luminance of the HDR layer and/or increasing the luminance of the SDR layer. In another example, a variable adjustment is applied.

公开(公告)号：US10832389B2

公开(公告)日：2020-11-10

申请号：US16218708

申请日：2018-12-13

Applicant: ATI Technologies ULC

Inventor： Jie Zhou ,  David I. J. Glen

IPC: G06K9/40 ,  G06T5/00 ,  H04N5/235

Abstract: There are many instances where a standard dynamic range (“SDR”) overlay is displayed over high dynamic range (“HDR”) content on HDR displays. Because the overlay is SDR, the maximum brightness of the overlay is much lower than the maximum brightness of the HDR content, which can lead to the SDR elements being obscured if those elements have at least some transparency. The present disclosure provides techniques including modifying the luminance of either or both of the HDR and SDR content when an SDR layer with some transparency is displayed over HDR content. A variety of techniques are provided. In one example, a fixed adjustment is applied to pixels of one or both of the SDR layer and the HDR layer. The fixed adjustment comprises decreasing the luminance of the HDR layer and/or increasing the luminance of the SDR layer. In another example, a variable adjustment is applied.

公开(公告)号：US09001141B2

公开(公告)日：2015-04-07

申请号：US13625208

申请日：2012-09-24

Applicant: ATI Technologies ULC

Inventor： David I. J. Glen ,  Jie Zhou

IPC: G09G5/00 ,  G09G5/02 ,  G06F15/16 ,  G09G5/36 ,  H04N5/202 ,  H04N5/46 ,  H04N5/445 ,  G03F3/08 ,  G06K9/00 ,  G06F3/00 ,  G06F3/048 ,  G09G5/14

CPC classification number: G09G5/02 ,  G09G5/14 ,  G09G2340/06

Abstract: An apparatus and method for providing display information generates, independently from an operating system, different screen subsections of a screen image using independent gamut remapping configurations to generate an output image in a target gamut space of a display. The method and apparatus also provides the generated output image for display or may display the generated output image.

Abstract translation: 用于提供显示信息的装置和方法独立于操作系统生成使用独立色域重映射配置的屏幕图像的不同屏幕子部分，以在显示器的目标色域空间中生成输出图像。 所述方法和装置还提供用于显示的所生成的输出图像，或者可以显示生成的输出图像。

公开(公告)号：US12190847B2

公开(公告)日：2025-01-07

申请号：US17407981

申请日：2021-08-20

Applicant: ATI Technologies ULC

Inventor： Keith Lee ,  David I. J. Glen ,  Jie Zhou ,  Yuxin Chen

IPC: G09G5/02 ,  G09G5/06

Abstract: Systems, apparatuses, and methods for reducing three dimensional (3D) lookup table (LUT) interpolation error while minimizing on-chip storage are disclosed. A processor generates a plurality of mappings from a first gamut to a second gamut at locations interspersed throughout a 3D representation of the pixel component space. For example, in one implementation, the processor calculates mappings for 17×17×17 vertices within the 3D representation. Other implementations can include other numbers of vertices. Rather than increasing the number of vertices to reduce interpolation error, the processor calculates mappings for centroids of the sub-cubes defined by the vertices within the 3D representation of the first gamut. This results in a smaller increase to the LUT size as compared to increasing the number of vertices. The centroid mappings are used for performing tetrahedral interpolation to map source pixels in the first gamut into the second gamut with a reduced amount of interpolation error.

公开(公告)号：US12148134B2

公开(公告)日：2024-11-19

申请号：US18309568

申请日：2023-04-28

Applicant: ATI Technologies ULC

Inventor： Jie Zhou ,  David I. J. Glen

IPC: G06K9/40 ,  G06T5/92 ,  H04N23/741

Abstract: There are many instances where a standard dynamic range (“SDR”) overlay is displayed over high dynamic range (“HDR”) content on HDR displays. Because the overlay is SDR, the maximum brightness of the overlay is much lower than the maximum brightness of the HDR content, which can lead to the SDR elements being obscured if those elements have at least some transparency. The present disclosure provides techniques including modifying the luminance of either or both of the HDR and SDR content when an SDR layer with some transparency is displayed over HDR content. A variety of techniques are provided. In one example, a fixed adjustment is applied to pixels of one or both of the SDR layer and the HDR layer. The fixed adjustment comprises decreasing the luminance of the HDR layer and/or increasing the luminance of the SDR layer. In another example, a variable adjustment is applied.

公开(公告)号：US20240112294A1

公开(公告)日：2024-04-04

申请号：US17957105

申请日：2022-09-30

Applicant: ATI TECHNOLOGIES ULC

Inventor： Jie Zhou ,  Wing-Chi Chow

IPC: G06T1/20 ,  G06T1/60 ,  G09G3/20 ,  G09G5/393

CPC classification number: G06T1/20 ,  G06T1/60 ,  G09G3/2096 ,  G09G5/393 ,  G09G2340/0414 ,  G09G2350/00 ,  G09G2360/12

Abstract: Techniques described herein allow multi-pass writeback processing of graphical frames (such as those having a high or ultrahigh resolution) to reduce bandwidth for display operations by, for example, splitting an input stream for processing by separate graphical pipelines as two or more spatially segmented portions. After receiving a graphical frame for processing, the graphical frame is spatially segmented into multiple portions. Each of the multiple portions is provided to a respective graphical pipeline of a plurality of graphical pipelines for processing. Each processed portion of the graphical frame is written substantially simultaneously to a corresponding portion of a system memory.

公开(公告)号：US20230267581A1

公开(公告)日：2023-08-24

申请号：US18309568

申请日：2023-04-28

Applicant: ATI Technologies ULC

Inventor： Jie Zhou ,  David I.J. Glen

IPC: G06T5/00 ,  H04N23/741

CPC classification number: G06T5/009 ,  H04N23/741 ,  G06T2207/20208

Abstract: There are many instances where a standard dynamic range (“SDR”) overlay is displayed over high dynamic range (“HDR”) content on HDR displays. Because the overlay is SDR, the maximum brightness of the overlay is much lower than the maximum brightness of the HDR content, which can lead to the SDR elements being obscured if those elements have at least some transparency. The present disclosure provides techniques including modifying the luminance of either or both of the HDR and SDR content when an SDR layer with some transparency is displayed over HDR content. A variety of techniques are provided. In one example, a fixed adjustment is applied to pixels of one or both of the SDR layer and the HDR layer. The fixed adjustment comprises decreasing the luminance of the HDR layer and/or increasing the luminance of the SDR layer. In another example, a variable adjustment is applied.

公开(公告)号：US11100889B2

公开(公告)日：2021-08-24

申请号：US16289260

申请日：2019-02-28

Applicant: ATI Technologies ULC

Inventor： Keith Lee ,  David I. J. Glen ,  Jie Zhou ,  Yuxin Chen

IPC: G09G5/02 ,  G09G5/06

Abstract: Systems, apparatuses, and methods for reducing three dimensional (3D) lookup table (LUT) interpolation error while minimizing on-chip storage are disclosed. A processor generates a plurality of mappings from a first gamut to a second gamut at locations interspersed throughout a 3D representation of the pixel component space. For example, in one implementation, the processor calculates mappings for 17×17×17 vertices within the 3D representation. Other implementations can include other numbers of vertices. Rather than increasing the number of vertices to reduce interpolation error, the processor calculates mappings for centroids of the sub-cubes defined by the vertices within the 3D representation of the first gamut. This results in a smaller increase to the LUT size as compared to increasing the number of vertices. The centroid mappings are used for performing tetrahedral interpolation to map source pixels in the first gamut into the second gamut with a reduced amount of interpolation error.

公开(公告)号：US20200279538A1

公开(公告)日：2020-09-03

申请号：US16289260

申请日：2019-02-28

Applicant: ATI Technologies ULC

Inventor： Keith Lee ,  David I. J. Glen ,  Jie Zhou ,  Yuxin Chen

IPC: G09G5/06

Abstract: Systems, apparatuses, and methods for reducing three dimensional (3D) lookup table (LUT) interpolation error while minimizing on-chip storage are disclosed. A processor generates a plurality of mappings from a first gamut to a second gamut at locations interspersed throughout a 3D representation of the pixel component space. For example, in one implementation, the processor calculates mappings for 17×17×17 vertices within the 3D representation. Other implementations can include other numbers of vertices. Rather than increasing the number of vertices to reduce interpolation error, the processor calculates mappings for centroids of the sub-cubes defined by the vertices within the 3D representation of the first gamut. This results in a smaller increase to the LUT size as compared to increasing the number of vertices. The centroid mappings are used for performing tetrahedral interpolation to map source pixels in the first gamut into the second gamut with a reduced amount of interpolation error.