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1. (WO2006084366) METHOD AND SYSTEM FOR LOW-SUBBAND CONTENT DISCRIMINATION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2006/084366    International Application No.:    PCT/CA2006/000185
Publication Date: 17.08.2006 International Filing Date: 09.02.2006
Chapter 2 Demand Filed:    07.12.2006    
IPC:
H04N 7/50 (2006.01), H04N 5/917 (2006.01)
Applicants: MARCH NETWORKS CORPORATION [CA/CA]; 555 Legget Drive, Tower B, Ottawa, Ontario K2K 2X3 (CA) (For All Designated States Except US).
MONTMINY, Christian, Joseph, Eric [CA/CA]; (CA) (For US Only)
Inventors: MONTMINY, Christian, Joseph, Eric; (CA)
Agent: KINSMAN, L., Anne; BORDEN LADNER GERVAIS LLP, World Exchange Plaza, 100 Queen Street, Suite 1100, Ottawa, Ontario K1P 1J9 (CA)
Priority Data:
60/651,067 09.02.2005 US
Title (EN) METHOD AND SYSTEM FOR LOW-SUBBAND CONTENT DISCRIMINATION
(FR) PROCEDE ET SYSTEME POUR LA DISCRIMINATION DE CONTENU A FAIBLE SOUS-BANDE
Abstract: front page image
(EN)A method and system are provided for discriminating areas of content from areas of noise in difference images of a digital video sequence. This allows the fewest bits possible to be used to encode areas of noise according to a video compression algorithm. The method comprises computing a difference frame from current image data and a reference frame; comparing at least one component of a candidate block within the difference frame to a threshold value to discriminate between content and noise; and encoding the candidate block if content is detected.
(FR)Procédé et système pour la discrimination entre des zones de contenu et des zones de bruit dans des images de différence de séquence vidéo numérique, permettant d'utiliser le moins de bits possibles pour coder les zones de bruit selon un algorithme de compression vidéo : calcul de trame de différence à partir de données d'image courantes et d'une trame de référence ; comparaison entre au moins une composante de bloc candidat dans la trame de différence et une valeur de seuil pour la discrimination contenu/bruit ; et codage du bloc candidat en cas de détection de contenu.
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)