公开(公告)号：US20160358346A1

公开(公告)日：2016-12-08

申请号：US15173425

申请日：2016-06-03

Applicant: Apple Inc.

Inventor： Ian C. Hendry ,  Kenneth I. Greenebaum ,  Eric L. Dacquay

IPC: G06T11/00 ,  G06T1/20

CPC classification number: G09G5/10 ,  G06F3/04847 ,  G06T1/20 ,  G06T11/001 ,  G06T2200/24 ,  G09G5/02 ,  G09G2320/0626 ,  G09G2320/066 ,  G09G2340/06 ,  G09G2354/00 ,  G09G2360/144 ,  H04N1/6061 ,  H04N1/6088 ,  H04N5/202 ,  H04N5/58 ,  H04N19/46 ,  H04N19/98

Abstract: Methods and apparatus for rendering and displaying high dynamic range (HDR) digital image content. An HDR rendering and display system may support the rendering and display of standard dynamic range (SDR) and HDR content to both HDR-enabled and standard displays. The HDR rendering and display system renders digital image content into the HDR space and maps the rendered HDR content into the display space of HDR or standard displays using display processing techniques that may preserve at least some of the HDR content even for standard displays. The HDR rendering and display system may take into account various information including but not limited to display characteristics such as size, control inputs, current image characteristics such as image brightness, and environmental information such as viewer position and ambient lighting levels to dynamically adapt the rendering and display of the digital image content according to ambient viewing conditions at the target display.

Abstract translation: 用于渲染和显示高动态范围（HDR）数字图像内容的方法和装置。 HDR渲染和显示系统可以支持标准动态范围（SDR）和HDR内容的渲染和显示，以支持HDR和标准显示。 HDR渲染和显示系统将数字图像内容呈现到HDR空间中，并且使用显示处理技术将所渲染的HDR内容映射到HDR或标准显示器的显示空间中，即使对于标准显示也可以保留HDR内容中的至少一些。 HDR渲染和显示系统可以考虑各种信息，包括但不限于诸如尺寸，控制输入，诸如图像亮度的当前图像特性等显示特性，以及诸如观看者位置和环境照明水平的环境信息，以动态地适应渲染 以及根据目标显示器上的环境观看条件显示数字图像内容。

公开(公告)号：US10089960B2

公开(公告)日：2018-10-02

申请号：US15173428

申请日：2016-06-03

Applicant: Apple Inc.

Inventor： Kenneth I. Greenebaum ,  Ian C. Hendry ,  Eric L. Dacquay

IPC: G09G5/10 ,  G06F3/0484 ,  G09G5/02 ,  G06T1/20 ,  H04N5/58 ,  G06T11/00 ,  H04N1/60 ,  H04N5/202 ,  H04N19/46 ,  H04N19/98

Abstract: Methods and apparatus for rendering and displaying high dynamic range (HDR) digital image content according to a perceptual model. A model of viewer perceptual range may be determined according to the perceptual model based on inputs including ambient lighting conditions, display panel characteristics (e.g., light leakage and reflected ambient light), and/or display panel settings. The system may determine, according to the model of viewer perceptual range, a brightness level that defines a lower portion and an upper portion of a display space of the display panel, and a maximum rendering value M. Digital image content may be rendered according to the maximum rendering value M to generate HDR content in a dynamic range of (0.0-M). The rendered HDR content may then be mapped into the display space of the display panel according to the brightness level.

公开(公告)号：US20160358584A1

公开(公告)日：2016-12-08

申请号：US15173428

申请日：2016-06-03

Applicant: Apple Inc.

Inventor： Kenneth I. Greenebaum ,  Ian C. Hendry ,  Eric L. Dacquay

IPC: G09G5/10 ,  H04N5/58 ,  G06F3/0484 ,  G06T1/20

CPC classification number: G09G5/10 ,  G06F3/04847 ,  G06T1/20 ,  G06T11/001 ,  G06T2200/24 ,  G09G5/02 ,  G09G2320/0626 ,  G09G2320/066 ,  G09G2340/06 ,  G09G2354/00 ,  G09G2360/144 ,  H04N1/6061 ,  H04N1/6088 ,  H04N5/202 ,  H04N5/58 ,  H04N19/46 ,  H04N19/98

Abstract: Methods and apparatus for rendering and displaying high dynamic range (HDR) digital image content according to a perceptual model. A model of viewer perceptual range may be determined according to the perceptual model based on inputs including ambient lighting conditions, display panel characteristics (e.g., light leakage and reflected ambient light), and/or display panel settings. The system may determine, according to the model of viewer perceptual range, a brightness level that defines a lower portion and an upper portion of a display space of the display panel, and a maximum rendering value M. Digital image content may be rendered according to the maximum rendering value M to generate HDR content in a dynamic range of (0.0-M). The rendered HDR content may then be mapped into the display space of the display panel according to the brightness level.

Abstract translation: 根据感知模型渲染和显示高动态范围（HDR）数字图像内容的方法和装置。 观察者感知范围的模型可以根据包括环境照明条件，显示面板特性（例如，光泄漏和反射的环境光）等的输入和/或显示面板设置的感知模型来确定。 系统可以根据观众感知范围的模型来确定限定显示面板的显示空间的下部和上部的亮度级别和最大渲染值M.数字图像内容可以根据 在（0.0-M）的动态范围内生成HDR内容的最大渲染值M. 然后可以根据亮度水平将渲染的HDR内容映射到显示面板的显示空间。

公开(公告)号：US10321164B2

公开(公告)日：2019-06-11

申请号：US15275011

申请日：2016-09-23

Applicant: Apple Inc.

Inventor： Kenneth I. Greenebaum ,  Eric L. Dacquay ,  Ian C. Hendry

IPC: H03M13/25 ,  H03M13/00 ,  H04N19/895 ,  G09G3/20 ,  H04N19/60 ,  H04N19/12 ,  H04N19/18 ,  H04N19/85 ,  G11B20/10 ,  G10L19/26 ,  G10L19/005 ,  H04N1/56 ,  G06T3/40 ,  G06T3/20 ,  H04B1/7085 ,  H04N1/58 ,  H04N19/124 ,  H04N19/36

Abstract: Systems, methods, and computer readable media are described for effectively using dither techniques upon signals having a predicted quantization error that varies across the range of the signal. In some embodiments, predicted error is used to shape a precision input signal so that the newly-shaped signal yields a uniform or relatively uniform predicted quantization error. A dither is applied to the re-shaped signal, and the shaping is reversed, after which the signal may be slope limited and/or quantized, taking full and efficient advantage of the dithering technique.

公开(公告)号：US10249263B2

公开(公告)日：2019-04-02

申请号：US15173425

申请日：2016-06-03

Applicant: Apple Inc.

Inventor： Ian C. Hendry ,  Kenneth I. Greenebaum ,  Eric L. Dacquay

IPC: G06T1/20 ,  G09G5/02 ,  G06T11/00 ,  G09G5/10 ,  G06F3/0484 ,  H04N5/58 ,  H04N1/60 ,  H04N5/202 ,  H04N19/46 ,  H04N19/98

Abstract: Methods and apparatus for rendering and displaying high dynamic range (HDR) digital image content. An HDR rendering and display system may support the rendering and display of standard dynamic range (SDR) and HDR content to both HDR-enabled and standard displays. The HDR rendering and display system renders digital image content into the HDR space and maps the rendered HDR content into the display space of HDR or standard displays using display processing techniques that may preserve at least some of the HDR content even for standard displays. The HDR rendering and display system may take into account various information including but not limited to display characteristics such as size, control inputs, current image characteristics such as image brightness, and environmental information such as viewer position and ambient lighting levels to dynamically adapt the rendering and display of the digital image content according to ambient viewing conditions at the target display.

公开(公告)号：US20170093434A1

公开(公告)日：2017-03-30

申请号：US15275011

申请日：2016-09-23

Applicant: Apple Inc.

Inventor： Kenneth I. Greenebaum ,  Eric L. Dacquay ,  Ian C. Hendry

IPC: H03M13/25 ,  H03M13/00 ,  H04N19/895

CPC classification number: H04N19/895 ,  G09G5/00 ,  G09G2320/0285 ,  G09G2340/00 ,  G09G2340/0407 ,  G09G2350/00 ,  H04N19/12 ,  H04N19/124 ,  H04N19/18 ,  H04N19/36 ,  H04N19/60 ,  H04N19/85

Abstract: Systems, methods, and computer readable media are described for effectively using dither techniques upon signals having a predicted quantization error that varies across the range of the signal. In some embodiments, predicted error is used to shape a precision input signal so that the newly-shaped signal yields a uniform or relatively uniform predicted quantization error. A dither is applied to the re-shaped signal, and the shaping is reversed, after which the signal may be slope limited and/or quantized, taking full and efficient advantage of the dithering technique.