IMAGE DISPLAY DEVICE AND/OR METHOD THEREFOR

Title:

IMAGE DISPLAY DEVICE AND/OR METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2013/145365

Kind Code:

A1

Abstract:

[Problem] To prevent image-quality degradation caused by overcorrection, while improving visibility of dark areas. [Solution] A reflectance calculation unit (27) stores a parameter (RGain) for adjusting the amplitude of a reflectance component (R). A lighting correction unit (25) generates a corrected lighting component (L1) from a lighting component (L) and a formula (L1=(log(LAmp*L+1))/(log(LAmp+1))). An image resynthesis unit (29) obtains a corrected lighting component (L') from L'=LGain*L1+(1-LGain)*L. The image resynthesis unit (29) also calculates a corrected image (Iout) from a formula (Iout=exp(logL'+RGain(logI-logL))) on the basis of the corrected lighting component (L') and a corrected reflectance (R'). By determining the value of a corrected lighting component (L') using a mixture ratio (LGain) of the output value (L1) of the correction function and the original lighting component (L), it is possible to maintain contrast to a certain extent while creating a natural image.

Inventors:

ABE REO (JP)
NAKAO MASASHI (JP)
HIGASHI MASAFUMI (JP)

Application Number:

PCT/JP2012/071861

Publication Date:

October 03, 2013

Filing Date:

August 29, 2012

Export Citation:

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Assignee:

EIZO CORP (JP)
ABE REO (JP)
NAKAO MASASHI (JP)
HIGASHI MASAFUMI (JP)

International Classes:

G06T5/00; H04N5/66

Foreign References:

JP2007174482A	2007-07-05
JP2010283690A	2010-12-16
JP2012010227A	2012-01-12
JP2005515515A	2005-05-26

Other References: