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Title:
NAIL SIZE ESTIMATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/255915
Kind Code:
A1
Abstract:
[Problem] To provide a nail size estimation device that assesses nail tips compatible with the nails of the hand of a subject. [Solution] This nail size estimation device has: a hand contour extraction means that changes a photographic planar image of the hand of a subject into a two-color image in which a threshold value set with reference to a color assessment is used as a boundary to form a two-color image, and extracts a contour image of the hand from the two-color image of the hand; a finger position specification means that specifies and sets positional coordinates of fingers from the contour image of the hand, and sets, as finger candidates, the positional coordinates at which the distance from the positional coordinates of the center of the hand is maximized from among the set positional coordinates of the fingers; a nail contour extraction means that changes the photographic planar image of the hand of the subject into a two-color image in which the color value of a threshold value set with reference to a color histogram of the nails is used as a boundary to form a two-color image, extracts contour images of the nails from the two-color image, calculates the positional coordinates of the centers of the nails from the contour images of the nails, and sets the finger candidates for which the distance from the positional coordinates of the finger candidates is minimized as the contour images of the corresponding nails; and a nail size estimation means that estimates the nail size of the subject from the number of pixels in the contour images of the nails that were set by the nail contour extraction means.

Inventors:
OGAWA SATOKI
AZUMA SHINYA
YUUKI KENTA
SHIMOTAKI ARI
Application Number:
JP2020/023383
Publication Date:
December 24, 2020
Filing Date:
June 15, 2020
Export Citation:
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Assignee:
JEWNEL INC (JP)
International Classes:
A45D31/00; A45D44/00
Domestic Patent References:
WO2012147961A12012-11-01
Foreign References:
JP2012232042A2012-11-29
JP2012232039A2012-11-29
JP2000194838A2000-07-14
JP2013039168A2013-02-28
Attorney, Agent or Firm:
YAMAGUCHI,Nobuyuki (JP)
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