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Pub. No.:    WO/2010/022558    International Application No.:    PCT/CN2008/072189
Publication Date: 04.03.2010 International Filing Date: 28.08.2008
H04N 9/73 (2006.01), G06T 5/00 (2006.01), G06K 9/36 (2006.01)
Applicants: HONG KONG APPLIED SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE CO. LTD [CN/CN]; 3rd Floor, Bio-Informatics Centre 2 Science Park West Avenue Hong Kong (CN) (For All Designated States Except US).
CHEN, Min [CN/CN]; (CN) (For US Only).
PENG, Huajun [CN/CN]; (CN) (For US Only).
QIU, Guoping [CN/CN]; (CN) (For US Only)
Inventors: CHEN, Min; (CN).
PENG, Huajun; (CN).
QIU, Guoping; (CN)
Agent: CHINA TRUER IP; Suite 2209, Block B, Jia Zhao Ye Centre Shangbu Road, Futian District Shenzhen, Guangdong 518031 (CN)
Priority Data:
Abstract: front page image
(EN)Enhancement of an image includ es adjusting its brightness and then adjusting the contrast of the brightness adjusted image. Adjusti ng the brightness uses an estimation of real world luminance. Contrast adjustment involves extracting ba ckground and contrast information, adjusting the contrast inform ation by an adjustment factor based on the background information and combining the back ground corrected contrast information to obtain an output image.
(FR)L'invention concerne l'amélioration d'une image comprenant le réglage de sa luminosité et ensuite le réglage du contraste de l'image à luminosité réglée. Le réglage de la luminosité utilise une estimation de luminance du monde réel. Le réglage de contraste comprend l'extraction des informations d'arrière-plan et de contraste, le réglage des informations de contraste par un facteur de réglage en fonction des informations d'arrière-plan et la combinaison des informations de contraste à arrière-plan corrigé pour obtenir une image de sortie.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, 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, HR, HU, IE, IS, IT, LT, LU, LV, MC, MT, NL, NO, 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)