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Titolo:
A complex cell-like receptive field obtained by information maximization
Autore:
Okajima, K; Imaoka, H;
Indirizzi:
NEC Corp Ltd, Fundamental Res Labs, Tsukuba, Ibaraki 305, Japan NEC Corp Ltd Tsukuba Ibaraki Japan 305 Labs, Tsukuba, Ibaraki 305, Japan
Titolo Testata:
NEURAL COMPUTATION
fascicolo: 3, volume: 13, anno: 2001,
pagine: 547 - 562
SICI:
0899-7667(200103)13:3<547:ACCRFO>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPATIAL-FREQUENCY; RESPONSES; FILTERS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Engineering, Computing & Technology
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Okajima, K NEC Corp Ltd, Fundamental Res Labs, 34 Miyukigaoka, Tsukuba, Ibaraki 305, Japan NEC Corp Ltd 34 Miyukigaoka Tsukuba Ibaraki Japan 305 05, Japan
Citazione:
K. Okajima e H. Imaoka, "A complex cell-like receptive field obtained by information maximization", NEURAL COMP, 13(3), 2001, pp. 547-562

Abstract

The energy model (Pollen & Ronner, 1983; Adelson & Bergen, 1985) for a complex cell in the visual cortex is investigated theoretically. The energy model describes the output of a complex cell as the squared sum of outputs oftwo linear operators. An information-maximization problem to determine thetwo linear operators is investigated assuming the low signal-to-noise ratio limit and a localization term in the objective function. As a result, twolinear operators characterized by a quadrature pair of Gabor functions areobtained as solutions. The result agrees with the energy model, which welldescribes the shift-invariant and orientation-selective responses of actual complex cells, and thus suggests that complex cells are optimally designed from an information-theoretic viewpoint.

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Documento generato il 03/04/20 alle ore 10:54:55