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Tone and color gamut mapping method and apparatus

A technology of color and area, applied in the field of tone and color gamut mapping and installation, which can solve the problem of scene depression and reduce the brightness of the image

Active Publication Date: 2016-04-20
DOLBY LAB LICENSING CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, a person operating a color grading device (a color grader) might decide to give a scene a melancholic feel by reducing the brightness of the image

Method used

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  • Tone and color gamut mapping method and apparatus
  • Tone and color gamut mapping method and apparatus
  • Tone and color gamut mapping method and apparatus

Examples

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Embodiment （EE

[0085] Accordingly, the present invention may be implemented in any form described herein, including but not limited to the following Enumerated Example Embodiments (EEEs) which describe the structure, features and functions of some parts of the invention:

[0086] EEE1. A method for mapping pixel data, the method comprising: comparing location information corresponding to the pixel data with a set of one or more special locations, and responding to the location information with one or more special location A particular location in said set of locations is matched, and one or both of tone and gamut mapping is performed on said pixel data according to a particular mapping algorithm.

[0087] EEE2. The method as recited in EEE1, comprising: comparing color coordinates of the pixel data to a set of one or more reserved colors, and in response to a color coordinate matching a reserved color in the set of reserved colors, Disables gamut mapping of the pixel data.

[0088] EEE3. Th...

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PUM

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Abstract

Tone and / or gamut mapping apparatus and methods may be applied to map color values ​​in image data for display on a particular display or other downstream device. A mapping algorithm may be selected based on the location and / or color coordinates of the pixel data being mapped. The apparatus and methods may be configured to map color coordinates differently depending on whether a pixel corresponds to a light source in the image and / or has a special or reserved color value.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 61 / 352,444, filed June 8, 2010, which is hereby incorporated by reference in its entirety. technical field [0003] The present invention relates to image processing, image display and image reproduction. Embodiments of the present invention provide methods and apparatus for processing image data to transform color and / or tone for display or reproduction locally or at a downstream device. Some example embodiments are displays configured to receive and process image data and to display the processed image data for viewing. Background technique [0004] Commercial video production typically involves acquiring and editing video sequences. Colors in video production can be adjusted during the color grading step before publishing. Color grading typically involves displaying a video production on a reference monitor under ideal viewing conditions an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/64H04N1/46H04N1/60
CPCH04N1/6058H04N9/67H04N1/46H04N1/60G09G1/002G06T5/40G09G3/2092G09G2340/14G09G2370/022
Inventor N·玛斯莫尔
Owner DOLBY LAB LICENSING CORP