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High dynamic range (HDR) data conversion and color space mapping

A color space and color space conversion technology, applied in the field of data conversion and color space mapping, can solve the problems that display devices cannot reproduce color, brightness and/or contrast

Pending Publication Date: 2020-12-18
SYNAPTICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, a display device capable of displaying only Standard Dynamic Range (SDR) content may not be able to reproduce the full range of color, brightness and / or contrast of an image captured in High Dynamic Range (HDR) format

Method used

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  • High dynamic range (HDR) data conversion and color space mapping
  • High dynamic range (HDR) data conversion and color space mapping
  • High dynamic range (HDR) data conversion and color space mapping

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Embodiment Construction

[0021] In the following description, numerous specific details are set forth, such as examples of specific components, circuits, and processes, in order to provide a thorough understanding of the present disclosure. The term "coupled" as used herein means connected directly to or connected through one or more intermediate components or circuits. Additionally, in the following description, and for purposes of explanation, specific terminology is set forth in order to provide a thorough understanding of aspects of the present disclosure. It will be apparent, however, to one skilled in the art that these specific details may not be required to practice the example embodiments. In other instances, well-known circuits and devices are shown in block diagram form in order to avoid obscuring the present disclosure. Some portions of the detailed description that follows are presented in terms of sequences, logical blocks, processing, and other symbolic representations of operations on...

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Abstract

A method and apparatus for image processing. A data conversion and color-space mapping (DCM) circuit includes an inverse opto-electrical transfer function (IOETF), a color-space converter, and a color-space re-mapper. The IOETF receives image data for one or more frames acquired by an image capture device and transfers the image data from a non-linear domain to a linear domain. The color-space converter converts the linear image data from a first color space to a second color space, where each of the first and second color spaces is based on a gamut of the image capture device. The color-spacere-mapper processes the image data to be rendered on a display device by remapping the converted image data from the second color space to a third color space, where the third color space is based ona gamut of the display device.

Description

technical field [0001] The embodiments relate generally to digital imaging, and in particular to data conversion and color space mapping between various imaging standards. Background technique [0002] Display devices (eg, televisions, set-top boxes, computers, mobile phones, etc.) may use different imaging technologies than those used by image capture devices (eg, cameras, video recorders, etc.). Advances in display technology have resulted in improved functionality, such as wider color gamuts and the migration from high-definition to ultra-high-definition display technology. Therefore, image processing may be required to properly render images captured by devices with different system capabilities and standards on a given display. In particular, it may be desirable to pre-process the source image to produce a more realistic image at the display (eg, utilizing the full dynamic range of the display). [0003] Image processing enables captured images to be presented on a di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T1/00G06T1/20
CPCG09G5/10H04N19/46G09G2340/06G09G2370/04G09G2360/16G06F3/14G09G5/02H04N1/6061H04N23/85H04N23/82H04N23/88H04N9/73H04N11/20H04N7/01
Inventor C·Q·张J·张C·曼基Y·嬴
Owner SYNAPTICS INC