PROCESSING DEVICE, FINGERPRINT IMAGE EXTRACTION PROCESSING DEVICE, SYSTEM, PROCESSING METHOD, AND COMPUTER READABLE MEDIUM

WIPO Patent Application WO/2020/170439

A1

A technique is provided which, from three-dimensional tomographic brightness data of a finger, can accurately and quickly extract a fingerprint image that has high authentication accuracy. This processing device is provided with: a means which, from three-dimensional tomographic brightness data, performs edge detection processing on tomographic images of each depth (101, 102, …, 10k, …, 10n), and thereafter calculates the total number of edge pixels in the tomographic images and acquires the depth dependence (111, 112) of the edge numbers; and a means for extracting a tomographic image (120, 121) with a striped fingerprint pattern on the basis of the aforementioned depth dependency of the edge numbers and the aforementioned three-dimensional tomographic brightness data.

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ONO YOSHIMASA (JP)
NAKAMURA SHIGERU (JP)
SHIBAYAMA ATSUFUMI (JP)
ABE JUNICHI (JP)

PCT/JP2019/006847

August 27, 2020

February 22, 2019

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NEC CORP (JP)

G06T1/00; A61B5/1172

WO2016204176A1

2016-12-22

JP2010051347A	2010-03-11
JP2013022338A	2013-02-04
JPH0773291A	1995-03-17
JP2010279440A	2010-12-16

IEIRI Takeshi (JP)

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