Cookpadで何つくっている？

$PPLQBEͰ Կ͍ͭͬͯ͘Δʁ ୈճ̘̫ษڧձˏؔ౦ !MVOBSEPH

ࣗݾ঺հ • Leszek Rybicki • @lunardog • Poland • 2016
Cookpad R&D

ࣗݾ঺հ • 1990 BASIC, ASM, C • 1995 Pascal, VB
• 2000 C++ • 2005 D • 2010 C, Python • 2012 PHP • 2015 JS • 2016 Python

1"35*  ྉཧه࿥

http://techlife.cookpad.com/entry/2017/09/14/161756

'PPE/POGPPE twitter: @teenybiscuit

w QFPQMFBSFOPUGPPE w QFUTBSFOPUGPPE w QPUUFEQMBOUTBSFOPUGPPE w FWJMBMJFOTBSFOPUGPPE w JGJUIBTUFYUPOJU
  JU`TQSPCBCMZOPUGPPE /PUGPPE

DCNN global pooling fully connected RGB x 240 x 240
pixels 2048 features x 8 x 8 one-hot class vector 2048 features food plant person pet other

GPPEOPOGPPEBDDVSBDZ QSFDJTJPOSFDBMM

*."(*/"5*0/

3&"-*5:

5IF w QFPQMFXJUIGPPE w GPPEXJUIPUIFSJUFNT w GPPEXJUIUFYU w GPPE CVUTNBMMJOQIPUP
w FEJCMFQMBOUT

3VMF "QIPUPUIBU  DBOCFDSPQQFEUP DPOUBJONPTUMZGPPE  JTBQIPUPPGGPPE

1BUDIJU

GPPE OPOGPPE

DCNN global pooling fully connected RGB x 240 x 240
pixels 2048 features x 8 x 8 one-hot class vector 2048 features DCNN global pooling 1x1 convo layer RGB x 240 x 240 pixels 2048 features x 8 x 8 one-hot class vector food not food not

w %$//*ODFQUJPO7 w USBJOFEPOBMMGPPEBOE BMMOPOGPPEQIPUPT  USBJOJOHJTSFBMMZGBTU w BWFSBHFQPPMJOH w
OPHMPCBMQPPMJOHMBZFS BGUFSUSBJOJOH w VTFSFTVMUJOHIFBUNBQ GPSDMBTTJpDBUJPO DCNN global pooling 1x1 convo layer RGB x 512 x 512 pixels 2048 features x 14 x 14 one-hot class vector food not

GPPEOPOGPPEBDDVSBDZ QSFDJTJPOSFDBMM

http://techlife.cookpad.com/entry/2017/09/14/161756 https://storialaw.jp/blog/3420

image food person test images from https://snappygoat.com/

$)"--&/(&

$-"44*':5)*4

test images from https://snappygoat.com/

·ͱΊ •working on food images is an interesting challenge! •
food / non-food: • multi-class classiﬁer is better than two class • fully-convolutional classiﬁer is better than multi-class • multi-class object detection from single-object training data

Cookpadで何つくっている？

Cookpadで何つくっている？

Leszek Rybicki

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$PPLQBEͰ Կ͍ͭͬͯ͘Δʁ ୈճ̘̫ษڧձˏؔ౦ !MVOBSEPH

ࣗݾ঺հ • Leszek Rybicki • @lunardog • Poland • 2016

ࣗݾ঺հ • 1990 BASIC, ASM, C • 1995 Pascal, VB

1"35*  ྉཧه࿥

http://techlife.cookpad.com/entry/2017/09/14/161756

'PPE/POGPPE twitter: @teenybiscuit

'PPE

w QFPQMFBSFOPUGPPE w QFUTBSFOPUGPPE w QPUUFEQMBOUTBSFOPUGPPE w FWJMBMJFOTBSFOPUGPPE w JGJUIBTUFYUPOJU

DCNN global pooling fully connected RGB x 240 x 240

GPPEOPOGPPEBDDVSBDZ QSFDJTJPOSFDBMM

."(/"5*0/

3&"-*5:

5IF w QFPQMFXJUIGPPE w GPPEXJUIPUIFSJUFNT w GPPEXJUIUFYU w GPPE CVUTNBMMJOQIPUP

3VMF "QIPUPUIBU  DBOCFDSPQQFEUP DPOUBJONPTUMZGPPE  JTBQIPUPPGGPPE

1BUDIJU

GPPE OPOGPPE

DCNN global pooling fully connected RGB x 240 x 240

w %$//*ODFQUJPO7 w USBJOFEPOBMMGPPEBOE BMMOPOGPPEQIPUPT  USBJOJOHJTSFBMMZGBTU w BWFSBHFQPPMJOH w

GPPEOPOGPPEBDDVSBDZ QSFDJTJPOSFDBMM

GPPEOPOGPPEBDDVSBDZ QSFDJTJPOSFDBMM

http://techlife.cookpad.com/entry/2017/09/14/161756 https://storialaw.jp/blog/3420

image food person test images from https://snappygoat.com/

image food person test images from https://snappygoat.com/

$)"--&/(&

$-"44':5)4

test images from https://snappygoat.com/

test images from https://snappygoat.com/

%&.0

·ͱΊ •working on food images is an interesting challenge! •