公开(公告)号：US10043484B2

公开(公告)日：2018-08-07

申请号：US15275225

申请日：2016-09-23

Applicant: Apple Inc.

Inventor： D. Amnon Silverstein ,  Xuemei Zhang ,  Yingjun Bai ,  Brandon J. Corey ,  Yonghui Zhao

IPC: G09G5/06

Abstract: Displaying wide-gamut images as intended on color-managed wide-gamut display systems while rendering a visually consistent image when rendered on targeted narrow-gamut display systems (regardless of whether the narrow-gamut displays are color-managed). Images represented in accordance with this disclosure are referred to as a dual-target images (DTI): one target being the image's original wide-gamut color space, the other target being a specified narrow-gamut color space. The novel representational scheme retains narrow-gamut rendering for those colors in a wide-gamut image that are within the targeted narrow-gamut color space, transitioning to wide-gamut rendering for those colors in the wide-gamut image that are outside the targeted narrow-gamut color space. This approach minimizes pixel clipping when rendering a wide-gamut image for a narrow-gamut display, while allowing the original wide-gamut pixel values to be recovered when rendering for a wide-gamut display.

公开(公告)号：US20170098428A1

公开(公告)日：2017-04-06

申请号：US15275225

申请日：2016-09-23

Applicant: Apple Inc.

Inventor： D. Amnon Silverstein ,  Xuemei Zhang ,  Yingjun Bai ,  Brandon J. Corey ,  Yonghui Zhao

IPC: G09G5/06 ,  G06F3/00

CPC classification number: G09G5/06 ,  G09G2320/0666 ,  G09G2340/06

Abstract: In general, techniques are disclosed for displaying wide-gamut images as intended on color-managed wide-gamut display systems while rendering a visually consistent image when rendered on targeted narrow-gamut display systems (regardless of whether the narrow-gamut displays are color-managed). For this reason, an image represented in accordance with this disclosure is referred to as a dual-target image (DTI): one target being the image's original wide-gamut color space, the other target being a specified narrow-gamut color space. The novel representational scheme described herein retains narrow-gamut rendering for those colors in a wide-gamut image that are within the targeted narrow-gamut color space, transitioning to wide-gamut rendering for those colors in the wide-gamut image that are outside the targeted narrow-gamut color space. This approach minimizes pixel clipping when rendering a wide-gamut image for a narrow-gamut display, while allowing the original wide-gamut pixel values to be recovered when rendering for a wide-gamut display.