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Titolo:
Modified cubic convolution scaler with minimum loss of information
Autore:
Han, JK; Kim, HM;
Indirizzi:
Samsung Elect, Ctr Corp Res & Dev, Digital Media Syst Lab, Suwon 442742, Kyung Ki Do, South Korea Samsung Elect Suwon Kyung Ki Do South Korea 442742ung Ki Do, South Korea Korea Adv Inst Sci & Technol, Dept Elect Engn, Taejon 305701, South Korea Korea Adv Inst Sci & Technol Taejon South Korea 305701 5701, South Korea
Titolo Testata:
OPTICAL ENGINEERING
fascicolo: 4, volume: 40, anno: 2001,
pagine: 540 - 546
SICI:
0091-3286(200104)40:4<540:MCCSWM>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPLINE INTERPOLATION; IMAGE-RECONSTRUCTION;
Keywords:
scaler; cubic convolution interpolation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
--discip_EC--
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Han, JK Samsung Elect, Ctr Corp Res & Dev, Digital Media Syst Lab, Maetan 3 Dong, Suwon 442742, Kyung Ki Do, South Korea Samsung Elect Maetan 3 Dong Suwon Kyung Ki Do South Korea 442742 a
Citazione:
J.K. Han e H.M. Kim, "Modified cubic convolution scaler with minimum loss of information", OPT ENG, 40(4), 2001, pp. 540-546

Abstract

The authors derive an adaptive version of cubic convolution interpolation for the enlargement or reduction of digital images by arbitrary scaling factors. The adaptation is performed in each subblock (typically LxL rectangular) of an image. It consists of three phases: two scaling procedures (i.e.,forward and backward interpolation) and an optimization of the interpolation kernel. In the forward interpolation phase, from the sampled data with the original resolution, we generate scaled data with different (higher or lower) resolution. The backward interpolation produces new discrete data by applying another interpolation to the scaled one. The phases are based on acubic convolution interpolation whose kernel is modified to adapt to localproperties of the data. During the optimization phase, we modify the parameter values to decrease the disparity between the original data and those resulting from another interpolation on the different-resolution output of the forward interpolating phase. The overall process is repeated iteratively. We show experimental results that demonstrate the effectiveness of the proposed interpolation method. The algorithm exhibits significant improvementin the minimization of information loss when compared with the conventional interpolation algorithms. (C) 2001 Society of Photo-Optical Instrumentation Engineers.

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Documento generato il 18/01/20 alle ore 21:26:57