JPH05746B2 - - Google Patents
Info
- Publication number
- JPH05746B2 JPH05746B2 JP57130469A JP13046982A JPH05746B2 JP H05746 B2 JPH05746 B2 JP H05746B2 JP 57130469 A JP57130469 A JP 57130469A JP 13046982 A JP13046982 A JP 13046982A JP H05746 B2 JPH05746 B2 JP H05746B2
- Authority
- JP
- Japan
- Prior art keywords
- fingerprint image
- fourier transform
- peak point
- fourier
- plane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 claims description 18
- 238000001228 spectrum Methods 0.000 claims description 18
- 230000009466 transformation Effects 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000001131 transforming effect Effects 0.000 claims 1
- 238000012545 processing Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- 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
- G06V40/12—Fingerprints or palmprints
- G06V40/1347—Preprocessing; Feature extraction
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/88—Image or video recognition using optical means, e.g. reference filters, holographic masks, frequency domain filters or spatial domain filters
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Human Computer Interaction (AREA)
- Collating Specific Patterns (AREA)
- Image Processing (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57130469A JPS5922173A (ja) | 1982-07-28 | 1982-07-28 | 指紋画像コ−ド化方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57130469A JPS5922173A (ja) | 1982-07-28 | 1982-07-28 | 指紋画像コ−ド化方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5922173A JPS5922173A (ja) | 1984-02-04 |
JPH05746B2 true JPH05746B2 (de) | 1993-01-06 |
Family
ID=15034982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57130469A Granted JPS5922173A (ja) | 1982-07-28 | 1982-07-28 | 指紋画像コ−ド化方法 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5922173A (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0780780A2 (de) | 1995-12-18 | 1997-06-25 | Nec Corporation | Gerät zur Bildverarbeitung von Fingerabdrücken |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6190641A (ja) * | 1984-10-09 | 1986-05-08 | 三菱電機株式会社 | 個人識別装置 |
JPS61156199A (ja) * | 1984-12-28 | 1986-07-15 | 金沢 政男 | 指紋情報の選択および音楽符号化方式 |
JP4569781B2 (ja) * | 2004-07-22 | 2010-10-27 | 日本電気株式会社 | 画像処理システム |
JP5599605B2 (ja) * | 2009-12-29 | 2014-10-01 | ラピスセミコンダクタ株式会社 | ノイズ除去装置、ノイズ除去方法、及びノイズ除去プログラム |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5084262A (de) * | 1973-11-26 | 1975-07-08 | ||
JPS5088899A (de) * | 1973-10-16 | 1975-07-16 |
-
1982
- 1982-07-28 JP JP57130469A patent/JPS5922173A/ja active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5088899A (de) * | 1973-10-16 | 1975-07-16 | ||
JPS5084262A (de) * | 1973-11-26 | 1975-07-08 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0780780A2 (de) | 1995-12-18 | 1997-06-25 | Nec Corporation | Gerät zur Bildverarbeitung von Fingerabdrücken |
Also Published As
Publication number | Publication date |
---|---|
JPS5922173A (ja) | 1984-02-04 |
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