Presentation 2005/6/17
Evaluation of Gabor-Filtering LSI Mimicking V1 Simple Cell Function
Kyohei NAKAMURA, Keisuke KOREKADO, Takashi MORIE,
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Abstract(in English) It is known that simple cells in the primary visual cortex (V1) perform feature extraction by Gabor filtering of images from retinas. One of the reasons why humans have global vision functions is visual processing in a feature space based on Gabor filtering results, which include various spatial frequency information. However, because this filtering requires huge calculations, there exist few examples of its practical applications. We have developed a processor LSI that can achieve real-time Gabor filtering by pixel-parallel operation using merged analog/digital architecture. This paper reports the detail of the calculation model for the Gabor-filtering LSI and the results of evaluation of the LSI as a Gabor-filtering processor for mimicking V1 functions.
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Keyword(in English) Gabor filter / primary visual cortex functions / pixel-parallel processing / merged analog-digital circuit / PWM signal
Paper # NC2005-23
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Committee NC
Conference Date 2005/6/17(1days)
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Registration To Neurocomputing (NC)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Evaluation of Gabor-Filtering LSI Mimicking V1 Simple Cell Function
Sub Title (in English)
Keyword(1) Gabor filter
Keyword(2) primary visual cortex functions
Keyword(3) pixel-parallel processing
Keyword(4) merged analog-digital circuit
Keyword(5) PWM signal
1st Author's Name Kyohei NAKAMURA
1st Author's Affiliation Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology()
2nd Author's Name Keisuke KOREKADO
2nd Author's Affiliation Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology
3rd Author's Name Takashi MORIE
3rd Author's Affiliation Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology
Date 2005/6/17
Paper # NC2005-23
Volume (vol) vol.105
Number (no) 131
Page pp.pp.-
#Pages 6
Date of Issue