公开(公告)号：US20130076776A1

公开(公告)日：2013-03-28

申请号：US13625208

申请日：2012-09-24

Applicant: ATI TECHNOLOGIES ULC

Inventor： David I.J. Glen ,  Jie Zhou

IPC: G09G5/02

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：US20230206400A1

公开(公告)日：2023-06-29

申请号：US17563843

申请日：2021-12-28

Applicant: ATI Technologies ULC

Inventor： Vladimir Lachine ,  Jie Zhou

IPC: G06T5/00 ,  G06T15/50 ,  G06V10/60

CPC classification number: G06T5/002 ,  G06T15/503 ,  G06V10/60 ,  G06T2207/20024

Abstract: Systems, apparatuses, and methods for implementing gradient adaptive ringing control for image resampling are disclosed. A blending alpha calculation circuit generates a blending alpha value for a set of input pixels based on a normalized gradient calculated for the set of input pixels. The normalized gradient is a low-pass filtered gradient of the set of input pixels divided by a maximum gradient for the set of input pixels. The normalized gradient is passed through a mapping function so as to generate the blending alpha value. The mapping function is pre-tuned based on filter coefficients, video content type, pixel format, and so on. An interpolated pixel is generated for the set of input pixels by blending ringing free and ringing prone interpolation coefficients, or by blending results between ringing free and ringing prone interpolation filters, with the blending weight for each filter based on the blending alpha value.

公开(公告)号：US11657483B2

公开(公告)日：2023-05-23

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

CPC classification number: G06T5/009 ,  H04N5/2355 ,  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.