Presentation 2019-05-10
Spatial-Separable Convolution: Low memory CNN for FPGA
Akira Jinguji, Masayuki Shimoda, Hiroki Nakahara,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Object detection and image recognition using a Convolutional Neural Network (CNN) are used in em- bedded systems, which require reasonable price and power performance. Since CNN has high accuracy and large computation, real-time processing cannot be realized in CPU, and power consumption is too large in GPU. The CNN realization of the FPGA is low power consumption, however large on-chip memory is required and expensive. Typically, feature-map size in layers is large. This is a bottleneck in FPGA memory resource restrictions. We propose Feature-Map Separable Convolution, which makes an inference with divided feature-map. The feature-map size becomes smaller when an input image size becomes smaller. Thus, the buffer memory can be reduced. From experiments, we accomplished that the accuracy does not decrease so much with reducing buffer memory by 85%.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) FPGA / CNN
Paper # RECONF2019-16
Date of Issue 2019-05-02 (RECONF)

Conference Information
Committee RECONF
Conference Date 2019/5/9(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Tokyo Tech Front
Topics (in Japanese) (See Japanese page)
Topics (in English) Reconfigurable system, etc.
Chair Masato Motomura(Tokyo Tech.)
Vice Chair Yuichiro Shibata(Nagasaki Univ.) / Kentaro Sano(RIKEN)
Secretary Yuichiro Shibata(Hiroshima City Univ.) / Kentaro Sano(e-trees.Japan)
Assistant Yuuki Kobayashi(NEC) / Hiroki Nakahara(Tokyo Inst. of Tech.)

Paper Information
Registration To Technical Committee on Reconfigurable Systems
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Spatial-Separable Convolution: Low memory CNN for FPGA
Sub Title (in English)
Keyword(1) FPGA
Keyword(2) CNN
1st Author's Name Akira Jinguji
1st Author's Affiliation Tokyo Institute of Tech(titech)
2nd Author's Name Masayuki Shimoda
2nd Author's Affiliation Tokyo Institute of Tech(titech)
3rd Author's Name Hiroki Nakahara
3rd Author's Affiliation Tokyo Institute of Tech(titech)
Date 2019-05-10
Paper # RECONF2019-16
Volume (vol) vol.119
Number (no) RECONF-18
Page pp.pp.85-90(RECONF),
#Pages 6
Date of Issue 2019-05-02 (RECONF)