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Method for compensating a picture

A technology in images and images, applied in the field of digital equipment with image devices, can solve problems such as the inability to obtain image information smoothly and the inability of users to perceive images

Inactive Publication Date: 2007-04-04
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Image information cannot be acquired smoothly when glare occurs due to light reflected from the display screen of the device
More specifically, in a state of relatively low chromaticity compared to a normal state, users cannot correctly perceive images from the screen causing the glare phenomenon

Method used

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  • Method for compensating a picture

Examples

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Embodiment Construction

[0018] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following discussion, detailed descriptions of functions and configurations incorporated herein that are well known to those skilled in the art are omitted for clarity and conciseness.

[0019] Although a person receives image information generated from an image device of a device having predetermined optical characteristics for easy transmission, his or her perception of the image information may differ according to surrounding environments. This difference is caused by changes in human visual sensitivity according to ambient background lighting. Conventional outdoor background lighting covers a range from approximately 0 to 10 8 Hom (cd / m 2 ), while the human perception range is around 10 5 cd / m 2 long.

[0020] FIG. 1A shows sensitivity change characteristics according to changes in ambient background lighting of a digital device. ...

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PUM

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Abstract

A method for compensating an image produced by image means for implementing image information takes account of ambient illumination. Luminance of external background illumination around the image means is measured. The measured luminance of the background illumination is compared with preset tristimulus values and a reflectance factor of the image means, a comparison result is computed, and a control signal is generated to compensate luminance and chroma of an image. Luminance and chroma of the image means are compensated in response to the control signal.

Description

technical field [0001] The present invention relates generally to a digital device, and more particularly, to a digital device having an image device, which is portable in an outdoor area and capable of providing information in the form of an image. Background technique [0002] With the development of electronic and digital technologies, digital devices have been applied in various personal and portable forms, such as navigation systems, personal digital assistants (PDAs), portable phones, notebook computers, electronic dictionaries, and moving picture experts group (MPEG) audio Layer 3 (MP3) digital video cameras, still cameras, etc. Digital devices are equipped with image means to provide information to users. As the image device, a liquid crystal display (LCD), a plasma display panel (PDP), or the like can be used. Image devices can provide various types of image information such as text, still images, moving images, and the like. [0003] Human perception undergoes a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B7/02H04N5/225G06T1/00G09G3/20G09G3/36G09G5/02H04N1/46H04N1/60H04N5/20H04N9/68
CPCH04N5/58H04N21/41407G06T11/001H04N1/6086G09G2340/06H04N21/42202H04N9/68G09G2320/04G09G5/02H04N21/4318G06T5/00G09G2360/144G09G3/2003G09G2320/0666G09G3/20G09G3/30G09G3/36
Inventor 赵成大元硕振朴正训郑荣民文载媛吴润济夏英浩金宗万李哲熙孙昌焕
Owner SAMSUNG ELECTRONICS CO LTD
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