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1. (WO2005117447) METHOD AND APPARATUS FOR IMAGE ENHANCEMENT FOR LOW BIT RATE VIDEO COMPRESSION
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2005/117447    International Application No.:    PCT/US2005/015816
Publication Date: 08.12.2005 International Filing Date: 05.05.2005
Chapter 2 Demand Filed:    06.12.2005    
IPC:
H04N 7/26 (2006.01), H04N 7/50 (2006.01)
Applicants: QUALCOMM Incorporated [US/US]; 5775 Morehouse Drive, San Diego, California 92121 (US) (For All Designated States Except US).
RAVEENDRAN, Vijayalakshmi R. [IN/US]; (US) (For US Only)
Inventors: RAVEENDRAN, Vijayalakshmi R.; (US)
Agent: WADSWORTH, Philip R.; 5775 Morehouse Drive, San Diego, CA 92121 (US)
Priority Data:
60/569,369 06.05.2004 US
Title (EN) METHOD AND APPARATUS FOR IMAGE ENHANCEMENT FOR LOW BIT RATE VIDEO COMPRESSION
(FR) PROCEDE ET APPAREIL D'AMELIORATION D'IMAGES POUR COMPRESSION VIDEO A FAIBLE DEBIT BINAIRE
Abstract: front page image
(EN)A method and apparatus for deblocking and edge enhancement of block based digital video includes determining that two blocks share a common boundary; measuring edge activity of the common boundary, comparing the measured edge activity to a first threshold, filtering one or more pixels of the two blocks with a low pass filter if the edge activity is below the first threshold, and enhancing one or more pixels of the two neighboring blocks if the edge activity is at or above the first threshold.
(FR)L'invention porte sur un procédé et un appareil de déblocage et amélioration des lisières consistant: à déterminer que deux blocs partagent la même mémoire, à mesurer l'activité de lisière des limites communes, à comparer l'activité de lisière à un premier seuil, à filtrer un ou plusieurs pixels des deux blocs avec un filtre passe bas si l'activité de lisière est inférieure au premier seuil, et à renforcer un ou deux pixels des deux blocs voisins si l'activité de lisière est au niveau du premier seuil ou au-dessus.
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, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NA, 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, 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)