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1. (WO2007019265) METHOD OF ADAPTIVE IMAGE CONTRAST ENHANCEMENT
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2007/019265    International Application No.:    PCT/US2006/030358
Publication Date: 15.02.2007 International Filing Date: 03.08.2006
IPC:
G06T 5/40 (2006.01)
Applicants: INTEL CORPORATION [US/US]; 2200 Mission College Boulevard, Santa Clara, California 95052 (US) (For All Designated States Except US).
GOLAN, Asaf [IL/IL]; (IL) (For US Only).
LEVY, Avraham [IL/IL]; (IL) (For US Only)
Inventors: GOLAN, Asaf; (IL).
LEVY, Avraham; (IL)
Agent: TROP, Timothy, N.; Trop, Pruner & Hu, P.C., 1616 S. Voss Rd., Suite 750, Houston, TX 77057-2631 (US)
Priority Data:
11/196,320 04.08.2005 US
Title (EN) METHOD OF ADAPTIVE IMAGE CONTRAST ENHANCEMENT
(FR) PROCEDE D'ACCENTUATION DE CONTRASTE D'IMAGE ADAPTATIF
Abstract: front page image
(EN)The contrast of a digital image is enhanced by forming a histogram of the luma values of an active area of the image, computing 'initial' bin indices that partition the histogram into bins of substantially equal population, mapping the 'initial' bin indices into 'final' bin indices that are more uniformly spaced than the 'initial' bin indices, and adjusting the luma values of all the pixels in accordance with the 'final' bin indices.
(FR)L'invention permet d'accentuer le contraste d'une image numérique en formant un histogramme des valeurs luma d'une zone active de l'image, en calculant les indices de format binaire 'initiaux' qui divisent l'histogramme en espaces mémoire de population sensiblement égale, en mettant en correspondance les indices de format binaire 'initiaux' avec des indices de format binaire 'finaux' qui sont espacés de manière plus uniforme que les indices de format binaire 'initiaux', et en réglant les valeurs luma de tous les pixels conformément aux indices de format binaire 'finaux'.
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, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, 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, RS, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, 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)