发明名称 IMAGE CORRECTION APPARATUS, IMAGE CORRECTION METHOD, AND BIOMETRIC AUTHENTICATION APPARATUS
摘要 An objective of the present invention is to provide an image correction apparatus for correcting a luminance difference of each pixel resulting from a transmittance difference of an image photographed using an image sensor having a plurality of filters, which have mutually different transmittance with respect to a light from a lighting. An image correction apparatus (7) includes: a correction factor calculating unit (21) to calculate a correction factor such that a distance between a corrected value obtained by correcting, by using the correction factor, a luminance value of a first pixel on the image corresponding to a sensor element with a first filter, which has a first transmittance characteristic, in an image sensor included in an image capturing unit (11) which generates the image, and a luminance value of a second pixel on the image corresponding to a sensor element having a second filter, which has second transmittance characteristic, in the image sensor, becomes smaller than a distance between the luminance value of the first pixel and the luminance value of the second pixel; and a correcting unit (22) to generate a corrected image by correcting the luminance value of the first pixel using the correction factor.
申请公布号 KR20140118837(A) 申请公布日期 2014.10.08
申请号 KR20140034708 申请日期 2014.03.25
申请人 FUJITSU LIMITED 发明人 AOKI TAKAHIRO
分类号 G06K9/36;G06K9/20;H04N5/225 主分类号 G06K9/36
代理机构 代理人
主权项
地址