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1. (WO2000060532) METHOD AND APPARATUS FOR RESTORATION OF LOW RESOLUTION IMAGES
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2000/060532    International Application No.:    PCT/US2000/008494
Publication Date: 12.10.2000 International Filing Date: 30.03.2000
Chapter 2 Demand Filed:    30.10.2000    
IPC:
G06T 5/00 (2006.01)
Applicants: UNIVERSITY OF MARYLAND BALTIMORE COUNTY [US/US]; 1000 Hilltop Circle, Baltimore, MD 21250 (US) (For All Designated States Except US).
CHANG, Chein-I [US/US]; (US).
THOUIN, Paul [US/US]; (US)
Inventors: CHANG, Chein-I; (US).
THOUIN, Paul; (US)
Agent: OPPENHEIMER, Max, Stul; Box 50, Stevenson, MD 21153 (US)
Priority Data:
60/127,316 01.04.1999 US
Title (EN) METHOD AND APPARATUS FOR RESTORATION OF LOW RESOLUTION IMAGES
(FR) PROCEDE ET APPAREIL DE RESTAURATION D'IMAGES A FAIBLE RESOLUTION
Abstract: front page image
(EN)The definition of a low-resolution image (10) may be improved by taking advantage of characteristics of its bimodal distribution (202) so as to produce an expanded image (206) with improved definition. This can not only reconstruct image information deteriorated by low-resolution devices, but also can refine original low spatial resolution so as to significantly improve image quality. An image is improved by iteratively solving a nonlinear optimization problem using a preferred Bimodal-Smooth-Average scoring method. Among the applications for the technique are improved optical character recognition, restoration of binary images, and restoration of video frames.
(FR)L'invention concerne la définition d'une image (10) à faible résolution, qu'on peut améliorer en exploitant sa distribution bimodale (202) de façon à produire une image agrandie (206) à définition améliorée, ce qui non seulement peut reconstruire les données image détériorées par des dispositifs à faible résolution, mais aussi affiner la faible résolution spatiale d'origine, de façon à améliorer sensiblement la qualité de l'image. On améliore une image en résolvant un problème d'optimisation non linéaire, de manière itérative, au moyen d'un procédé préféré de notation bimodale, lisse et pondérée (BSA). Parmi les applications, on trouve la reconnaissance améliorée de caractères optiques, la restauration d'images binaires et la restauration de trames vidéo.
Designated States: AL, AM, AT, AU, AZ, BB, BG, BR, BY, CA, CH, CN, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, US, UZ, VN.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, SD, SL, SZ, TZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)