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Title:
INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, AND RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/042248
Kind Code:
A1
Abstract:
An information processing system (10) comprises: a distance acquisition means (110) for identifying an iris region including an iris of a subject from a visible light image of the subject and acquiring an iris distance that is a distance to the iris region; an iris image acquisition means (120) for changing a focal distance in accordance with the iris distance and acquiring the iris image of the subject; a score calculation means (130) for calculating, on the basis of the iris image, a score regarding a deviation of focus in the iris image; and a correspondence update means (140) for updating, on the basis of the score, a correspondence between the iris distance and focal distance at the time of acquiring the iris image. According to such an information processing system, the correspondence can be updated with high accuracy and hence an appropriate iris image can be acquired.

Inventors:
YAMAKABE RYO (JP)
AKASHI RYUICHI (JP)
OGINO YUKA (JP)
YOSHIMI KOSUKE (JP)
TSUKADA MASATO (JP)
Application Number:
PCT/JP2021/033693
Publication Date:
March 23, 2023
Filing Date:
September 14, 2021
Export Citation:
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Assignee:
NEC CORP (JP)
International Classes:
G02B7/28; A61B5/117; G03B13/36; G03B15/00
Domestic Patent References:
WO2021166223A12021-08-26
WO2015001634A12015-01-08
WO2020261368A12020-12-30
Foreign References:
JP2004226729A2004-08-12
JP2002085382A2002-03-26
JP2012154825A2012-08-16
JPH10229516A1998-08-25
JP2002122778A2002-04-26
JP2012208797A2012-10-25
JP2020516936A2020-06-11
Attorney, Agent or Firm:
EGAMI, TATSUO et al. (JP)
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