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1. (WO1991018366) A METHOD OF DETECTING SKEW IN FORM IMAGES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/018366 International Application No.: PCT/US1991/003102
Publication Date: 28.11.1991 International Filing Date: 09.05.1991
IPC:
G06K 9/32 (2006.01)
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
K
RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9
Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
20
Image acquisition
32
Aligning or centering of the image pick-up or image-field
Applicants:
EASTMAN KODAK COMPANY [US/US]; 343 State Street Rochester, NY 14650-2201, US
Inventors:
LEE, Yongchun; US
Agent:
ARNDT, Dennis, R.; 343 State Street Rochester, NY 14650-2201, US
Priority Data:
526,42621.05.1990US
Title (EN) A METHOD OF DETECTING SKEW IN FORM IMAGES
(FR) PROCEDE DE DETECTION DE DESALIGNEMENT DANS DES IMAGES DE FEUILLET
Abstract:
(EN) Document contour vectorization and the use of a modified Hough transform are used in combination to detect the skew angle of a digitized form image so that image skew may then be corrected in the preprocessing of form images prior to document analysis and classification.
(FR) On utilise la vectorisation de contours de document ainsi qu'une transformation modifiée de Hough en combinaison afin de détecter l'angle de désalignement d'une image de feuillet numérisée de manière que le désalignement de l'image puisse être corrigé dans le pré-traitement d'images de feuillet avant l'analyse et la classification du document.
Designated States: JP
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0482188