METHOD AND DEVICE FOR EXTRACTING IRIS IMAGE IMAGE UNDER CONDITION OF NON-UNIFORM ILLUMINATION

Title:

METHOD AND DEVICE FOR EXTRACTING IRIS IMAGE IMAGE UNDER CONDITION OF NON-UNIFORM ILLUMINATION

Document Type and Number:

WIPO Patent Application WO/2015/103953

Kind Code:

A1

Abstract:

Disclosed are a method and device for extracting an iris image under the condition of non-uniform illumination. The method comprises: filtering a non-uniform illumination intensity component from an image containing an iris image (S102); calculating a colour difference in the filtered image (S104); and conducting iris image extraction according to the colour difference (S106). In the embodiments, by filtering a non-uniform illumination intensity component, the influence of the condition of non-uniform illumination on the iris image extraction can be avoided.

Inventors:

SUN XIANJUN (CN)
DONG JIPING (CN)
XIA PENG (CN)

Application Number:

PCT/CN2015/070058

Publication Date:

July 16, 2015

Filing Date:

January 04, 2015

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Assignee:

DEAYEA TECHNOLOGY SHANGHAI CO LTD (CN)

International Classes:

G06T7/60

Foreign References:

CN1760887A	2006-04-19
CN102819850A	2012-12-12
CN102542243A	2012-07-04

Attorney, Agent or Firm:

KING & WOOD MALLESONS (CN)
北京市金杜律师事务所 (CN)

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