TY - GEN
T1 - Frequency-flexible stochastic Gabor filter
AU - Onizawa, Naoya
AU - Katagiri, Daisaku
AU - Matsumiya, Kazumichi
AU - Gross, Warren J.
AU - Hanyu, Takahiro
PY - 2015/9/9
Y1 - 2015/9/9
N2 - This paper introduces an algorithm of a frequency flexible Gabor filter based on stochastic computation. The stochastic Gabor filter provides area-efficient hardware implementation compared to a traditional implementation, but a spacial frequency of the stochastic Gabor filter is restricted by the number of states in an up-down counter used in hardware. In the proposed algorithm, a frequency is determined by two parameters: the number of states and a scaling factor to an input signal. As the input-signal range is scaled down from a stochastic-signal range of [-1at1], a tentative frequency determined by the number of states is precisely controlled to synthesize a flexible frequency desired. The proposed stochastic Gabor filter is modelled and simulated in MATLAB that demonstrates a flexible frequency is synthesized, unlike the conventional method.
AB - This paper introduces an algorithm of a frequency flexible Gabor filter based on stochastic computation. The stochastic Gabor filter provides area-efficient hardware implementation compared to a traditional implementation, but a spacial frequency of the stochastic Gabor filter is restricted by the number of states in an up-down counter used in hardware. In the proposed algorithm, a frequency is determined by two parameters: the number of states and a scaling factor to an input signal. As the input-signal range is scaled down from a stochastic-signal range of [-1at1], a tentative frequency determined by the number of states is precisely controlled to synthesize a flexible frequency desired. The proposed stochastic Gabor filter is modelled and simulated in MATLAB that demonstrates a flexible frequency is synthesized, unlike the conventional method.
UR - http://www.scopus.com/inward/record.url?scp=84961383525&partnerID=8YFLogxK
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U2 - 10.1109/ICDSP.2015.7251914
DO - 10.1109/ICDSP.2015.7251914
M3 - Conference contribution
AN - SCOPUS:84961383525
T3 - International Conference on Digital Signal Processing, DSP
SP - 458
EP - 462
BT - 2015 IEEE International Conference on Digital Signal Processing, DSP 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE International Conference on Digital Signal Processing, DSP 2015
Y2 - 21 July 2015 through 24 July 2015
ER -