公开(公告)号：US11475549B1

公开(公告)日：2022-10-18

申请号：US17339156

申请日：2021-06-04

Applicant: NVIDIA Corporation

Inventor： Shaveen Kumar

IPC: G06T5/00

Abstract: High dynamic range (HDR) support is provided for legacy application programs, such as games that are configured to display standard dynamic range (SDR) frames. HDR frames may be generated without modifying the legacy application program. The buffer creation process of the legacy application program is intercepted and modified before creation of the SDR format buffer so that the buffer is configured to use an upgraded SDR format having an increased bit depth compared with a conventional SDR buffer. Rather than tone mapping and quantizing rendered image data to the lower bit depth for storage in the conventional SDR buffer, the rendered image data is tone mapped and quantized for storage at the increased bit depth of the upgraded SDR buffer. Therefore, the luminance and greater dynamic range of the tone mapped data is better preserved compared with outputting conventional SDR frames.

公开(公告)号：US12002189B2

公开(公告)日：2024-06-04

申请号：US17684779

申请日：2022-03-02

Applicant: NVIDIA Corporation

Inventor： Shaveen Kumar ,  Anjul Patney ,  Eric Xu ,  Anton Moor

IPC: G06T5/92 ,  G06N3/08 ,  G06T5/20 ,  G06T5/70

CPC classification number: G06T5/92 ,  G06N3/08 ,  G06T5/20 ,  G06T5/70 ,  G06T2200/24 ,  G06T2207/10016 ,  G06T2207/20028 ,  G06T2207/20084 ,  G06T2207/20208

Abstract: The technology disclosed herein involves using a machine learning model (e.g., CNN) to expand lower dynamic-range image content (e.g., SDR images) into higher dynamic-range image content (e.g., HDR images). The machine learning model can take as input the lower dynamic-range image and can output multiple expansion maps that are used to make the expanded image appear more natural. The expansion maps may be used by image operators to smooth color banding and to dim overexposed regions or user interface elements in the expanded image. The expanded content (e.g., HDR image content) may then be provided to one or more devices for display or storage.

公开(公告)号：US20230281766A1

公开(公告)日：2023-09-07

申请号：US17684779

申请日：2022-03-02

Applicant: NVIDIA Corporation

Inventor： Shaveen Kumar ,  Anjul Patney ,  Eric Xu ,  Anton Moor

IPC: G06T5/00 ,  G06N3/08 ,  G06T5/20

CPC classification number: G06T5/009 ,  G06N3/08 ,  G06T5/002 ,  G06T5/20 ,  G06T2207/20028 ,  G06T2207/20208 ,  G06T2207/20084 ,  G06T2207/10016 ,  G06T2200/24

Abstract: The technology disclosed herein involves using a machine learning model (e.g., CNN) to expand lower dynamic-range image content (e.g., SDR images) into higher dynamic-range image content (e.g., HDR images). The machine learning model can take as input the lower dynamic-range image and can output multiple expansion maps that are used to make the expanded image appear more natural. The expansion maps may be used by image operators to smooth color banding and to dim overexposed regions or user interface elements in the expanded image. The expanded content (e.g., HDR image content) may then be provided to one or more devices for display or storage.

公开(公告)号：US11954830B2

公开(公告)日：2024-04-09

申请号：US17125705

申请日：2020-12-17

Applicant: NVIDIA Corporation

Inventor： Shaveen Kumar

IPC: G06T11/00 ,  G06N3/08 ,  G06T5/00 ,  G06T5/20

CPC classification number: G06T5/009 ,  G06N3/08 ,  G06T5/20 ,  G06T2207/20084 ,  G06T2207/20208

Abstract: High dynamic range (HDR) support is provided for legacy application programs, such as games that are configured to display standard dynamic range (SDR) frames. HDR frames may be synthesized without modifying the legacy application program. The buffer creation process of the legacy application program is intercepted and modified before creation of the SDR format buffer so that the buffer is configured to use an HDR format. A location of an intermediate buffer storing HDR rendered data is determined by intercepting and analyzing graphics driver calls in a command stream produced by the legacy application program. The HDR rendered data is combined with user interface content extracted from the SDR frames. Additionally, any post processing effects used by the legacy application program to produce the SDR frames may be predicted and applied to the HDR rendered data to synthesize the HDR frames for display on a modern HDR display device.

公开(公告)号：US20220198622A1

公开(公告)日：2022-06-23

申请号：US17125705

申请日：2020-12-17

Applicant: NVIDIA Corporation

Inventor： Shaveen Kumar

IPC: G06T5/00 ,  G06N3/08 ,  G06T5/20

Abstract: High dynamic range (HDR) support is provided for legacy application programs, such as games that are configured to display standard dynamic range (SDR) frames. HDR frames may be synthesized without modifying the legacy application program. The buffer creation process of the legacy application program is intercepted and modified before creation of the SDR format buffer so that the buffer is configured to use an HDR format. A location of an intermediate buffer storing HDR rendered data is determined by intercepting and analyzing graphics driver calls in a command stream produced by the legacy application program. The HDR rendered data is combined with user interface content extracted from the SDR frames. Additionally, any post processing effects used by the legacy application program to produce the SDR frames may be predicted and applied to the HDR rendered data to synthesize the HDR frames for display on a modern HDR display device.