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Apparatus and method for adjusting white balance

A technology for white balance and equipment, applied in the field of white balance adjustment, which can solve the problems of AWB performance degradation and difficulty in extracting gray areas.

Inactive Publication Date: 2013-06-05
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since there may exist various gray regions with different reflective spectral characteristics under complex light sources, it is difficult to extract suitable gray regions, resulting in the degradation of AWB performance

Method used

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  • Apparatus and method for adjusting white balance
  • Apparatus and method for adjusting white balance
  • Apparatus and method for adjusting white balance

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Embodiment Construction

[0020] The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the present invention as defined by the claims and their equivalents. The foregoing description includes various specific details to assist in understanding, but these specific details are to be regarded as merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

[0021] The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art ...

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Abstract

An apparatus and a method for adjusting a white balance, and more particularly, an apparatus and a method for adjusting a white balance of an image captured with a complex light source are provided. The apparatus includes a camera unit, and a controller for controlling recognition of a facial image from an image captured by the camera unit and, if it is determined that the image has been captured with a complex light source based on a comparison between a white balance gain calculated based on a facial skin color of the recognized facial image and a white balance gain calculated based on a white balance scheme, for adjusting a white balance of the captured image based on a final white balance gain extracted by interpolating the two white balance gains.

Description

technical field [0001] The present invention generally relates to an apparatus and method for adjusting white balance. In particular, the present invention relates to an apparatus and method for adjusting the white balance of images captured under complex light sources. Background technique [0002] The camera expresses the most suitable color under any light source through the automatic white balance (AWB) function. The light input into the camera's sensor depends on the spectrum of the light source and the reflected spectrum of the object. When a white or gray object is exposed by a low color temperature light source or a high color temperature light source, the white or gray object appears red by the low color temperature light source and blue by the high color temperature light source. The AWB function compensates for this (ie, renders white as it is). [0003] The AWB function allows extraction of gray areas under complex light sources, and allows red gain (Rgain: G / ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/04H04N9/73G06K9/00
CPCH04N9/735H04N23/88H04N9/73H04N23/12
Inventor 石镇根朴宰希李庸求
Owner SAMSUNG ELECTRONICS CO LTD
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