JP4805359B2 - 不変径方向虹彩セグメント化 - Google Patents
不変径方向虹彩セグメント化 Download PDFInfo
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- JP4805359B2 JP4805359B2 JP2008558461A JP2008558461A JP4805359B2 JP 4805359 B2 JP4805359 B2 JP 4805359B2 JP 2008558461 A JP2008558461 A JP 2008558461A JP 2008558461 A JP2008558461 A JP 2008558461A JP 4805359 B2 JP4805359 B2 JP 4805359B2
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- 230000011218 segmentation Effects 0.000 title description 27
- 238000000034 method Methods 0.000 claims description 57
- 210000001747 pupil Anatomy 0.000 claims description 38
- 238000004590 computer program Methods 0.000 claims 2
- 210000000554 iris Anatomy 0.000 description 124
- 230000008569 process Effects 0.000 description 12
- 210000001508 eye Anatomy 0.000 description 9
- 238000000605 extraction Methods 0.000 description 6
- 210000003786 sclera Anatomy 0.000 description 6
- 238000005286 illumination Methods 0.000 description 5
- 238000010606 normalization Methods 0.000 description 5
- 210000000744 eyelid Anatomy 0.000 description 4
- 238000013139 quantization Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 210000000720 eyelash Anatomy 0.000 description 3
- 230000001815 facial effect Effects 0.000 description 3
- 238000013507 mapping Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 241000282412 Homo Species 0.000 description 2
- 238000010420 art technique Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003542 behavioural effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/18—Eye characteristics, e.g. of the iris
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/117—Identification of persons
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/70—Arrangements for image or video recognition or understanding using pattern recognition or machine learning
- G06V10/74—Image or video pattern matching; Proximity measures in feature spaces
- G06V10/75—Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video features; Coarse-fine approaches, e.g. multi-scale approaches; using context analysis; Selection of dictionaries
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/18—Eye characteristics, e.g. of the iris
- G06V40/193—Preprocessing; Feature extraction
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- General Health & Medical Sciences (AREA)
- Multimedia (AREA)
- Life Sciences & Earth Sciences (AREA)
- Human Computer Interaction (AREA)
- Ophthalmology & Optometry (AREA)
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- Evolutionary Biology (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Bioinformatics & Computational Biology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Collating Specific Patterns (AREA)
Description
本発明は、契約番号F10801 EE5.2の下において政府の援助を受けて行われたものである。連邦政府は本発明において一定の権利を有する。
ステップ305では、前処理ステップが行われる。この前処理は本質的に従来的なものである。このステップでは、走査された画像に質感強調が実施される。瞳孔、目瞼、睫毛、強膜、および目の他の非必須部分のような、画像を曖昧にする部分が分析から除外される。外部照明、中間調変動、および他のアーティファクト(例えば、色付きコンタクトレンズ)の副作用を低減するために、本システムは、局所径方向質感パターン(LRTP)を使用して画像を前処理する。しかし、この質感強調は本システムの動作にとって必須条件ではないことに留意されるべきである。
I(x,y)=二次元座標x,yに配置された画素の色強度、
ω=画素x,yの隣接点を決定する曲線、および
A=ωの面積(画素の数)である。
Claims (3)
- (1)対象の虹彩画像を取得するステップと、
(2)前記虹彩画像を複数の径方向セグメントに径方向へセグメント化するステップと、
(3)各径方向セグメントに関して、所定の一次元特徴構造に関するデータを決定するステップと、前記特徴構造は前記画像内部の該特徴構造の基準値に対する前記セグメント内部の色強度のピークおよび/または谷を含み、前記基準値は各径方向セグメントの表示のために選択された色強度のピークまたは谷であり、前記データは前記少なくともひとつのピークおよび/または谷の大きさと、前記対象の瞳孔の中心から外側径方向に沿って前記少なくともひとつのピークおよび/または谷の相対的位置とを含み、
(4)前記径方向セグメントのそれぞれに関する前記データセットを含む、前記対象に関するテンプレートを作成するステップと、
を含む目の虹彩の生物測定学的分析によって対象を識別する方法。 - ステップ(2)は、
(2.1)前記対象の前記瞳孔の前記中心を決定するステップと、
(2.2)前記画像中の瞳孔/虹彩境界を決定するステップと、
(2.3)前記虹彩を等しい角サイズの複数の径方向セグメントに径方向へセグメント化するステップと、
を含む、請求項1に記載の方法。 - 目の虹彩の生物測定学的分析によって対象を識別するためにコンピュータ読取り可能な媒体に具現化されるコンピュータプログラムあって、
前記対象の虹彩の画像を取得するための第1のコンピュータ実行可能な命令と、
前記虹彩画像を複数の径方向セグメントに径方向へセグメント化するための第2のコンピュータ実行可能な命令と、
前記画像内部の所定の一次元特徴構造に関するデータを決定するための第3のコンピュータ実行可能な命令と、前記特徴構造は前記画像内部の該特徴構造の基準値に対する前記セグメント内部の色強度のピークおよび/または谷を含み、前記基準値は各径方向セグメントの表示のために選択された色強度のピークまたは谷であり、前記データは前記少なくともひとつのピークおよび/または谷の大きさと、前記対象の瞳孔の中心から外側径方向に沿って前記少なくともひとつのピークおよび/または谷の相対的位置とを含み、
前記径方向セグメントのそれぞれに関する前記データセットを含む、前記対象に関するテンプレートを作成および格納するための第4のコンピュータ実行可能な命令と、
を含むコンピュータプログラム。
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US77877006P | 2006-03-03 | 2006-03-03 | |
US60/778,770 | 2006-03-03 | ||
US11/372,854 US8442276B2 (en) | 2006-03-03 | 2006-03-10 | Invariant radial iris segmentation |
US11/372,854 | 2006-03-10 | ||
US11/382,373 | 2006-05-09 | ||
US11/382,373 US8064647B2 (en) | 2006-03-03 | 2006-05-09 | System for iris detection tracking and recognition at a distance |
PCT/US2007/063019 WO2007103698A2 (en) | 2006-03-03 | 2007-03-01 | Invariant radial iris segmentation |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2009529195A JP2009529195A (ja) | 2009-08-13 |
JP2009529195A5 JP2009529195A5 (ja) | 2010-04-15 |
JP4805359B2 true JP4805359B2 (ja) | 2011-11-02 |
Family
ID=38353648
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008558461A Active JP4805359B2 (ja) | 2006-03-03 | 2007-03-01 | 不変径方向虹彩セグメント化 |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP4805359B2 (ja) |
KR (1) | KR101423153B1 (ja) |
GB (1) | GB2450027B (ja) |
WO (1) | WO2007103698A2 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2468380B (en) * | 2009-03-02 | 2011-05-04 | Honeywell Int Inc | A feature-based method and system for blur estimation in eye images |
US8873810B2 (en) | 2009-03-02 | 2014-10-28 | Honeywell International Inc. | Feature-based method and system for blur estimation in eye images |
US8948467B2 (en) * | 2010-08-06 | 2015-02-03 | Honeywell International Inc. | Ocular and iris processing system and method |
FR2979727B1 (fr) | 2011-09-06 | 2013-08-30 | Morpho | Identification par reconnaissance d'iris |
KR101601564B1 (ko) * | 2014-12-30 | 2016-03-09 | 가톨릭대학교 산학협력단 | 얼굴의 원형 블록화를 이용한 얼굴 검출 방법 및 그 장치 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001195594A (ja) * | 1999-04-09 | 2001-07-19 | Iritech Inc | 虹彩同定システム及び虹彩認識によって人を同定する方法 |
WO2004090814A1 (ja) * | 2003-04-02 | 2004-10-21 | Matsushita Electric Industrial Co. Ltd. | 画像処理方法、画像処理装置、撮影装置、画像出力装置および虹彩認証装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6247813B1 (en) * | 1999-04-09 | 2001-06-19 | Iritech, Inc. | Iris identification system and method of identifying a person through iris recognition |
US7336806B2 (en) * | 2004-03-22 | 2008-02-26 | Microsoft Corporation | Iris-based biometric identification |
-
2007
- 2007-03-01 JP JP2008558461A patent/JP4805359B2/ja active Active
- 2007-03-01 KR KR1020087022043A patent/KR101423153B1/ko active IP Right Grant
- 2007-03-01 WO PCT/US2007/063019 patent/WO2007103698A2/en active Application Filing
- 2007-03-01 GB GB0815933A patent/GB2450027B/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001195594A (ja) * | 1999-04-09 | 2001-07-19 | Iritech Inc | 虹彩同定システム及び虹彩認識によって人を同定する方法 |
WO2004090814A1 (ja) * | 2003-04-02 | 2004-10-21 | Matsushita Electric Industrial Co. Ltd. | 画像処理方法、画像処理装置、撮影装置、画像出力装置および虹彩認証装置 |
Also Published As
Publication number | Publication date |
---|---|
WO2007103698A3 (en) | 2007-11-22 |
KR101423153B1 (ko) | 2014-07-25 |
JP2009529195A (ja) | 2009-08-13 |
WO2007103698A2 (en) | 2007-09-13 |
GB0815933D0 (en) | 2008-10-08 |
KR20080100256A (ko) | 2008-11-14 |
GB2450027A (en) | 2008-12-10 |
GB2450027B (en) | 2011-05-18 |
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