WO1993007580A1 - Procede pour determiner la direction dans une region locale d'un segment de profil et procede pour determiner les lignes et les angles - Google Patents
Procede pour determiner la direction dans une region locale d'un segment de profil et procede pour determiner les lignes et les angles Download PDFInfo
- Publication number
- WO1993007580A1 WO1993007580A1 PCT/JP1992/001277 JP9201277W WO9307580A1 WO 1993007580 A1 WO1993007580 A1 WO 1993007580A1 JP 9201277 W JP9201277 W JP 9201277W WO 9307580 A1 WO9307580 A1 WO 9307580A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- local
- pixels
- line segment
- pixel
- azimuth
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/20—Image enhancement or restoration by the use of local operators
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/12—Edge-based segmentation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/13—Edge detection
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/70—Determining position or orientation of objects or cameras
- G06T7/73—Determining position or orientation of objects or cameras using feature-based methods
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/40—Extraction of image or video features
- G06V10/44—Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersections; Connectivity analysis, e.g. of connected components
- G06V10/443—Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersections; Connectivity analysis, e.g. of connected components by matching or filtering
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/40—Extraction of image or video features
- G06V10/48—Extraction of image or video features by mapping characteristic values of the pattern into a parameter space, e.g. Hough transformation
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP92920916A EP0559919B1 (en) | 1991-10-02 | 1992-10-02 | Method for determining orientation of contour line segment in local area and for determining straight line and corner |
CA002097492A CA2097492C (en) | 1991-10-02 | 1992-10-02 | Method for determining orientation of contour line segment in local area and for determining straight line and corner |
JP50645693A JP3387499B2 (ja) | 1991-10-02 | 1992-10-02 | 輪郭線分の局所領域における方位決定方法および線分と角の決定方法 |
US08/070,450 US5586199A (en) | 1991-10-02 | 1992-10-02 | Method for determining orientation of contour line segment in local area and for determining straight line and corner |
DE69228741T DE69228741T2 (de) | 1991-10-02 | 1992-10-02 | Verfahren zur bestimmung der lokalen orientierung eines kontursegmentes und zur bestimmung von linien und ecken |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3/255353 | 1991-10-02 | ||
JP25535391 | 1991-10-02 | ||
JP4/92996 | 1992-04-13 | ||
JP9299692 | 1992-04-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993007580A1 true WO1993007580A1 (fr) | 1993-04-15 |
Family
ID=26434361
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1992/001277 WO1993007580A1 (fr) | 1991-10-02 | 1992-10-02 | Procede pour determiner la direction dans une region locale d'un segment de profil et procede pour determiner les lignes et les angles |
Country Status (6)
Country | Link |
---|---|
US (3) | US5586199A (ja) |
EP (1) | EP0559919B1 (ja) |
JP (1) | JP3387499B2 (ja) |
CA (1) | CA2097492C (ja) |
DE (1) | DE69228741T2 (ja) |
WO (1) | WO1993007580A1 (ja) |
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CA2097492C (en) * | 1991-10-02 | 1999-05-18 | Shinji Kanda | Method for determining orientation of contour line segment in local area and for determining straight line and corner |
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US20140316841A1 (en) | 2013-04-23 | 2014-10-23 | Kofax, Inc. | Location-based workflows and services |
JP2016518790A (ja) | 2013-05-03 | 2016-06-23 | コファックス, インコーポレイテッド | モバイル装置を用いて取込まれたビデオにおけるオブジェクトを検出および分類するためのシステムおよび方法 |
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US9760788B2 (en) | 2014-10-30 | 2017-09-12 | Kofax, Inc. | Mobile document detection and orientation based on reference object characteristics |
US10242285B2 (en) | 2015-07-20 | 2019-03-26 | Kofax, Inc. | Iterative recognition-guided thresholding and data extraction |
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US9779296B1 (en) | 2016-04-01 | 2017-10-03 | Kofax, Inc. | Content-based detection and three dimensional geometric reconstruction of objects in image and video data |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57182877A (en) * | 1981-05-06 | 1982-11-10 | Toshiba Corp | Detection system for angle change of outline edge |
JPS5949071A (ja) * | 1982-09-13 | 1984-03-21 | Dainippon Screen Mfg Co Ltd | 図形輪郭デ−タ圧縮方法 |
JPS62125481A (ja) * | 1985-11-26 | 1987-06-06 | インターナショナル・ビジネス・マシーンズ・コーポレーション | パタ−ン認識装置 |
JPH03175591A (ja) * | 1989-12-05 | 1991-07-30 | Fuji Xerox Co Ltd | 文字認識装置 |
Family Cites Families (7)
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---|---|---|---|---|
US4547895A (en) * | 1978-10-30 | 1985-10-15 | Fujitsu Limited | Pattern inspection system |
JPS6012674B2 (ja) * | 1979-04-02 | 1985-04-02 | 日本電気株式会社 | パタ−ン特徴抽出装置 |
GB2147474B (en) * | 1983-10-03 | 1987-05-07 | Shaken Kk | Method of processing character or pictorial image data |
US4876726A (en) * | 1986-01-07 | 1989-10-24 | De La Rue Printrak, Inc. | Method and apparatus for contextual data enhancement |
JPH07120385B2 (ja) * | 1987-07-24 | 1995-12-20 | シャープ株式会社 | 光学的読取り方法 |
US5267328A (en) * | 1990-01-22 | 1993-11-30 | Gouge James O | Method for selecting distinctive pattern information from a pixel generated image |
CA2097492C (en) * | 1991-10-02 | 1999-05-18 | Shinji Kanda | Method for determining orientation of contour line segment in local area and for determining straight line and corner |
-
1992
- 1992-10-02 CA CA002097492A patent/CA2097492C/en not_active Expired - Fee Related
- 1992-10-02 US US08/070,450 patent/US5586199A/en not_active Expired - Lifetime
- 1992-10-02 EP EP92920916A patent/EP0559919B1/en not_active Expired - Lifetime
- 1992-10-02 WO PCT/JP1992/001277 patent/WO1993007580A1/ja active IP Right Grant
- 1992-10-02 DE DE69228741T patent/DE69228741T2/de not_active Expired - Fee Related
- 1992-10-02 JP JP50645693A patent/JP3387499B2/ja not_active Expired - Fee Related
-
1996
- 1996-07-08 US US08/676,512 patent/US5668893A/en not_active Expired - Fee Related
-
1997
- 1997-07-16 US US08/893,256 patent/US5870494A/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57182877A (en) * | 1981-05-06 | 1982-11-10 | Toshiba Corp | Detection system for angle change of outline edge |
JPS5949071A (ja) * | 1982-09-13 | 1984-03-21 | Dainippon Screen Mfg Co Ltd | 図形輪郭デ−タ圧縮方法 |
JPS62125481A (ja) * | 1985-11-26 | 1987-06-06 | インターナショナル・ビジネス・マシーンズ・コーポレーション | パタ−ン認識装置 |
JPH03175591A (ja) * | 1989-12-05 | 1991-07-30 | Fuji Xerox Co Ltd | 文字認識装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0559919A4 * |
Also Published As
Publication number | Publication date |
---|---|
CA2097492A1 (en) | 1993-04-03 |
US5668893A (en) | 1997-09-16 |
JP3387499B2 (ja) | 2003-03-17 |
DE69228741T2 (de) | 1999-09-02 |
EP0559919A1 (en) | 1993-09-15 |
US5870494A (en) | 1999-02-09 |
US5586199A (en) | 1996-12-17 |
DE69228741D1 (de) | 1999-04-29 |
CA2097492C (en) | 1999-05-18 |
EP0559919B1 (en) | 1999-03-24 |
EP0559919A4 (ja) | 1994-02-23 |
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