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от deepsystems.ioYOLOYouOnlyLookOnce:Unified,Real-TimeObjectDetectionJosephRedmon,SantoshDivvala,RossGirshick,Ali
FarhadiBig
pictureTimeFast
R-CNNFPS:
0.5mAP:
70Faster
R-CNNFPS:
7mAP:
73.2R-CNNFPS:-mAP:
58.5DPMFPS:
0.5mAP:
34.3YOLOFPS:
45mAP:
63.4SSDFPS:
58mAP:
72.1Nov
2013 Apr
2015 June
2015 Dec
2015РезультатынатестовойвыборкиPascalVOC2007.Обучениенаtrainvalsets
2007+2012mAP2deepsystems.io448x448x3InputimageInference3deepsystems.io448x448x3InputimageGoogLeNetmodification(20
layers)14x14x1024Inference4deepsystems.io448x448x3InputimageGoogLeNetmodification(20
layers)14x14x102414x14x1024C,RInference5deepsystems.io448x448x3InputimageGoogLeNetmodification(20
layers)14x14x102414x14x1024C,R14x14x1024C,RInference6deepsystems.io448x448x3InputimageGoogLeNetmodification(20
layers)14x14x102414x14x1024C,R14x14x1024C,R7x7x1024C,RInference7deepsystems.io448x448x3InputimageGoogLeNetmodification(20
layers)14x14x102414x14x1024C,R14x14x1024C,R7x7x1024C,R7x7x1024C,RInference8deepsystems.io448x448x3InputimageGoogLeNetmodification(20
layers)14x14x102414x14x1024C,R14x14x1024C,R7x7x1024C,R7x7x1024C,RFC,R4096x1Inference9deepsystems.io448x448x3InputimageGoogLeNetmodification(20
layers)14x14x102414x14x1024C,R14x14x1024C,R7x7x1024C,R7x7x1024C,RFC,R4096x1FC1470x1Inference10deepsystems.io448x448x3InputimageGoogLeNetmodification(20
layers)14x14x102414x14x1024C,R14x14x1024C,R7x7x1024C,R7x7x1024C,RFC,R4096x1FC1470x1Reshape7x7x30Inference11deepsystems.ioGoogLeNetmodification(20
layers)448x448x314x14x102414x14x1024C,R14x14x10247x7x10247x7x1024FC,R4096x1FC1470x1Reshape7x7x30C,RC,RC,RDetection
ProcedureInputimageInference12deepsystems.ioGoogLeNetmodification(20
layers)448x448x314x14x102414x14x1024C,R14x14x10247x7x10247x7x1024FC,R4096x1FC1470x1Reshape7x7x30C,RC,RC,RDetection
ProcedureInputimageInference13deepsystems.ioTrainfrom
scratchGoogLeNetmodification(20
layers)448x448x314x14x102414x14x1024C,R14x14x10247x7x10247x7x1024FC,R4096x1FC1470x1Reshape7x7x30C,RC,RC,RDetection
ProcedureimageInferenceusenewadditionalconvlayers=>better
performanceInput14deepsystems.ioGoogLeNetmodification(20
layers)448x4C,RFC,RFCReshape30C,RC,RC,RDetectionProcedureInputimage8x314x14x102414x14x102414x14x1024 7x7x1024Tensorvalues
interpretation7x7x10244096x11470x17x7x715deepsystems.io730InferenceGoogLeNetmodification(20
layers)448x4C,RFC,RFCReshape30C,RC,RC,RDetectionProcedureInputimage8x314x14x102414x14x102414x14x1024 7x7x1024Tensorvalues
interpretation7x7x10244096x11470x17x7x716deepsystems.io730InferenceGoogLeNetmodification(20
layers)448x4C,RFC,RFCReshape30C,RC,RC,RDetectionProcedureInputimage8x314x14x102414x14x102414x14x1024 7x7x1024Tensorvalues
interpretation7x7x10244096x11470x17x7x7730grid
cell7717deepsystems.ioInferenceGoogLeNetmodification(20
layers)448x4C,RFC,RFCReshape30C,RC,RC,RDetectionProcedureInputimage8x314x14x102414x14x102414x14x1024 7x7x1024Tensorvalues
interpretation7x7x10244096x11470x17x7x7730grid
cell7Inference718deepsystems.ioGoogLeNetmodification(20
layers)448x4C,RFC,RFCReshape30C,RC,RC,RDetectionProcedureInputimage8x314x14x102414x14x102414x14x1024 7x7x1024Tensorvalues
interpretation7x7x10244096x11470x17x7x7730grid
cell71x30719deepsystems.ioInferenceGoogLeNetmodification(20
layers)448x4C,RFC,RFCReshape30C,RC,RC,RDetectionProcedureInputimage7730grid
cell71x308x314x14x102414x14x102414x14x1024 7x7x1024Tensorvalues
interpretation7x7x10244096x11470x17x7x5x-coordinateofbboxcenterinsidecell([0;1]wrtgridcell
size)y-coordinateofbboxcenterinsidecell([0;1]wrtgridcell
size)w-bboxwidth([0;1]wrt
image)h-bboxheight([0;1]wrt
image)c-bboxconfidence~P(objin
bbox1)Inference720deepsystems.ioGoogLeNetmodification(20
layers)448x4C,RFC,RFCReshape30C,RC,RC,RDetectionProcedureInputimage7730grid
cell71x308x314x14x102414x14x102414x14x1024 7x7x1024Tensorvalues
interpretation7x7x10244096x11470x17x7x5 5x-coordinateofbboxcenterinsidecell([0;1]wrtgridcell
size)y-coordinateofbboxcenterinsidecell([0;1]wrtgridcell
size)w-bboxwidth([0;1]wrt
image)h-bboxheight([0;1]wrt
image)c-bboxconfidence~P(objin
bbox2)Inference721deepsystems.ioGoogLeNetmodification(20
layers)448x4C,RFC,RFCReshape30C,RC,RC,RDetectionProcedureInputimage7730grid
cell71x308x314x14x102414x14x102414x14x1024 7x7x1024Tensorvalues
interpretation7x7x10244096x11470x17x7x5 5twobboxesforeachgrid
cellInference722deepsystems.ioGoogLeNetmodification(20
layers)448x4C,RFC,RFCReshape30C,RC,RC,RDetectionProcedureInputimage7730grid
cell71x30Inference8x314x14x102414x14x102414x14x1024 7x7x1024Tensorvalues
interpretation7x7x10244096x1 1470x17x7x5 520-numberof
classes723deepsystems.ioGoogLeNetmodification(20
layers)448x4C,RFC,RFCReshape30C,RC,RC,RDetectionProcedureInputimage7730grid
cell71x30Inference8x314x14x102414x14x102414x14x1024 7x7x1024Tensorvalues
interpretation7x7x10244096x1 1470x17x7x5 5i(from1to
20)20-numberof
classesClassscore~P(objisclass_i|objin
box)724deepsystems.ioGoogLeNetmodification(20
layers)448x4C,RFC,RFCReshape30C,RC,RC,RDetectionProcedureInputimage7730grid
cell71x30InferenceClassscoresfor
bb18x314x14x102414x14x102414x14x1024 7x7x1024Tensorvalues
interpretation7x7x10244096x11470x17x7xbb1
confidence5 5MUL20725deepsystems.io20x1GoogLeNetmodification(20
layers)448x448x314x14x102414x14x1024C,R14x14x10247x7x10247x7x1024FC,R4096x1FC1470x1Reshape7x7x30C,RC,RC,RDetectionProcedureInputimageTensorvalues
interpretation730grid
cell755Inference20bb2
confidence1x30MUL7Classscoresfor
bb2726deepsystems.io20x1GoogLeNetmodification(20
layers)448x448x314x14x102414x14x1024C,R14x14x10247x7x10247x7x1024FC,R4096x1FC1470x1Reshape7x7x30C,RC,RC,RDetectionProcedureInputimageTensorvalues
interpretation730grid
cell755Inference20bb2
confidence1x30MUL7Classscoresfor
bb2Dothisoperationforeachbboxineachgrid
cell727deepsystems.io20x1deepsystems.ioGoogLeNetmodification(20
layers)448x4C,RFC,RFCReshape30C,RC,RC,RDetectionProcedureInputimage7730gridcell(1,
1)77Inference8x314x14x102414x14x1024 14x14x1024 7x7x1024Tensorvalues
interpretation7x7x10244096x11470x17x7x2bboxesforfirstcell(1,
1)bb1
bb220x1
20x128deepsystems.ioGoogLeNetmodification(20
layers)448x4C,RFC,RFCReshape30C,RC,RC,RDetectionProcedureInputimage7730gridcell(1,
2)77Inference8x314x14x102414x14x1024 14x14x1024 7x7x1024Tensorvalues
interpretation7x7x10244096x11470x17x7x2bboxesforsecondcell(1,
2)bb1bb2bb3
bb420x120x120x1
20x129deepsystems.ioGoogLeNetmodification(20
layers)448x4C,RFC,RFCReshape30C,RC,RC,RDetectionProcedureInputimage7730gridcell(7,
7)77Inference…….988x314x14x102414x14x102414x14x1024 7x7x1024Tensorvalues
interpretation7x7x10244096x1 1470x17x7xbb1bb2bb3
bb42bboxesforlastcell(7,
7)bb97
bb20x120x120x120x120x1
20x120x120x120x120x120x120x120x120x1
20x130GoogLeNetmodification(20
layers)448x4C,RFC,RFCReshape30C,RC,RC,RDetectionProcedureInputimage7730gridcell(7,
7)77Inference…….988x314x14x102414x14x102414x14x1024 7x7x1024Tensorvalues
interpretation7x7x10244096x1 1470x17x7xbb1bb2bb3
bb4Total7*7*2=98
bboxesbb97
bb31deepsystems.ioLookatdetection
procedure32deepsystems.ioDetectionProcedure7x7x30…….bb97
bb98bb1bb2bb3
bb4Classscoresforeach
bbox33deepsystems.io20x120x1bb97
bb98bb1bb2bb3
bb4Dog
scores…….Classscoresforeach
bbox34deepsystems.ioGetfirstclassscoresforeach
bbox20x120x1bb97
bb98bb1bb2bb3
bb4Dog
scores…….Set
zeroifscore<thresh1
(0.2)35deepsystems.iobb97
bb98bb1bb2bb3
bb4000…….20x120x1bb97
bb98bb1bb2bb3
bb4Dog
scores…….Set
zeroifscore<thresh1
(0.2)bb97
bb98bb1bb2bb3
bb4000…….Sort
descending36deepsystems.iobb2bb4
bb98bb3bb1
bb98000…….20x120x1bb97
bb98bb1bb2bb3
bb4Dog
scores…….Set
zeroifscore<thresh1
(0.2)bb97
bb98bb1bb2bb3
bb4000…….Sort
descendingbb2bb4
bb98bb3bb1
bb98000…….NMSalgorithm
setscorestozeroforredundant
bboxesbb2bb4
bb9837deepsystems.iobb3bb1
bb980000…….20x120x1bb97
bb98bb1bb2bb3
bb4Dog
scores…….Set
zeroifscore<thresh1
(0.2)bb97
bb98bb1bb2bb3
bb4000…….Sort
descending…….bb3bb1
bb98bb2bb4
bb980 0 0NMSalgorithm
setscorestozeroforredundant
bboxes…….bb3bb1
bb98bb2bb4
bb980 0 0020x120x1Howit
works38deepsystems.ioNon-MaximumSuppression:
intuition39deepsystems.iobb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bbox0.50.30.20.1000040deepsystems.ioNon-MaximumSuppression:
intuitionbb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bbox0.50.30.20.10000Non-MaximumSuppression:
intuition41deepsystems.iobb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bbox0.50.30.20.10000Non-MaximumSuppression:
intuition42deepsystems.iobb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bbox0.50.30.20.10000Non-MaximumSuppression:
intuition43deepsystems.iobb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bbox0.50.30.20.10000Non-MaximumSuppression:
intuition44deepsystems.iobb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bbox0.50.30.20.10000Non-MaximumSuppression:
intuition45deepsystems.iobb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bboxGetbboxwithmaxscore.Let’sdenoteit
“bbox_max”0.50.30.20.10000Non-MaximumSuppression:
intuition46deepsystems.iobb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bboxCompare“bbox_max”withotherslessscore(non-zero!)bboxes.Let’sdenoteit“bbox_cur”0.50.30.20.10000Non-MaximumSuppression:
intuition47deepsystems.iobb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bboxIfIoU(bbox_max,bbox_cur)>0.5thenset0scoreto
bbox_cur.0.50.30.20.10000Non-MaximumSuppression:
intuition48deepsystems.iobb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bboxIfIoU(bbox_max,bbox_cur)>0.5thenset0scoreto
bbox_cur.Inthiscase:setto
0.0.500.20.10000Non-MaximumSuppression:
intuition49deepsystems.iobb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bboxGotonext
bbox_cur.0.500.20.10000Non-MaximumSuppression:
intuition50deepsystems.iobb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bboxIfIoU(bbox_max,bbox_cur)>0.5thenset0scoreto
bbox_cur.Gotonext
bbox_cur.0.500.20.10000Non-MaximumSuppression:
intuition51deepsystems.iobb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bboxNon-MaximumSuppression:
intuitionIfIoU(bbox_max,bbox_cur)>0.5thenset0scoreto
bbox_cur.Inthiscase:
continue.Gotonext
bbox_cur.0.500.20.1000052deepsystems.iobb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bboxGotonext
bbox_cur.0.500.20.10000Non-MaximumSuppression:
intuition53deepsystems.iobb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bboxGotonext
bbox_cur.0.500.20.10000IfIoU(bbox_max,bbox_cur)>0.5thenset0scoreto
bbox_cur.54deepsystems.ioNon-MaximumSuppression:
intuitionbb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bboxGotonext
bbox_cur.0.500.20.10000IfIoU(bbox_max,bbox_cur)>0.5thenset0scoreto
bbox_cur.Inthiscase:
continue.55deepsystems.ioNon-MaximumSuppression:
intuitionbb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bboxGotonext
bbox_cur.0.500.20.10000IfIoU(bbox_max,bbox_cur)>0.5thenset0scoreto
bbox_cur.Inthiscase:
continue.Dothisprocedureforother“bbox_cur”.Afterthat
...56deepsystems.ioNon-MaximumSuppression:
intuitionbb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bboxGotonextbboxwithbigscore.Let’sdenoteit“bbox_max”0.500.20.10000Non-MaximumSuppression:
intuition57deepsystems.iobb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bbox0.500.20.10000Gotonext
bbox_cur.Non-MaximumSuppression:
intuition58deepsystems.iobb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bbox0.500.20.10000Gotonext
bbox_cur.IfIoU(bbox_max,bbox_cur)>0.5thenset0scoreto
bbox_cur.59deepsystems.ioNon-MaximumSuppression:
intuitionbb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bbox0.500.200000Gotonext
bbox_cur.IfIoU(bbox_max,bbox_cur)>0.5thenset0scoreto
bbox_cur.Inthiscase:setto
0.Dothisprocedureforother“bbox_max”andforothercorresponding
“bbox_cur”.60deepsystems.ioNon-MaximumSuppression:
intuitionbb47bb20bb15
bb7class:
dogbb1bb4bb8
bb981x98class(dog)scoresforeach
bbox0.500.200000Aftercomparisonalmostallpairsofbboxestheonlytwobboxesleftwithnon-zeroclassscore
value.Non-MaximumSuppression:
intuition61deepsystems.iobb97
bb98bb1bb2bb3
bb4Cat
scores…….Set
zeroifscore<thresh1
(0.2)bb97
bb98bb1bb2bb3
bb4000…….Sort
descending…….bb2bb4
bb98bb3bb1
bb980 0 0NMSalgorithm
setscorestozeroforredundant
bboxes…….bb2bb4
bb98bb3bb1
bb980 0 062deepsystems.io0Dothisprocedurefornextclass20x120x1bb97
bb98bb1bb2bb3
bb4person
scores…….Set
zeroifscore<thresh1
(0.2)bb97
bb98bb1bb2bb3
bb4…….000Sort
descendingbb2bb4
bb98bb3bb1
bb98…….000bb2bb4
bb9863deepsystems.iobb3bb1
bb98…….0000Dothisprocedureforall
classesNMSalgorithm
setscorestozeroforredundant
bboxes20x120x1bb97
bb98bb1bb2bb3
bb4person
scores…….Set
zeroifscore<thresh1
(0.2)bb97
bb98bb1bb2bb3
bb4…….000Sort
descendingbb2bb4
bb98bb3bb1
bb98…….000bb2bb4
bb98bb3bb1
bb98Afterthisprocedure-alotof
zerosNMSalgorithm
setscorestozeroforredundant
bboxes000…….000000064deepsystems.io20x120x1bb97
bb98bb1bb2bb3
bb4person
scores…….Set
zeroifscore<thresh1
(0.2)bb97
bb98bb1bb2bb3
bb4…….000Sort
descendingbb2bb4
bb98bb3bb1
bb98…….000bb2bb4
bb98bb3bb1
bb98Selectbboxestodrawbyclassscore
valuesNMSalgorithm
setscorestozeroforredundant
bboxes000…….000000065deepsystems.io20x120x1…….bb97
bb98bb1bb2bb3
bb4Set
zeroifscore<thresh1
(0.2)…….bb97
bb98bb1bb2bb3
bb4000Sort
descending…….bb2bb4
bb97bb3bb1
bb98000…….bb2bb4
bb97bb3bb1
bb980class=max_index(scoresfor
bb3);score=max(scoresfor
bb3);Score>
0yesnodrawbboxwithclass
colorskip
bboxNMSalgorithm
setscorestozeroforredundant
bboxes66deepsystems.io00000000020x120x1…….bb97
bb98bb1bb2bb3
bb4Set
zeroifscore<thresh1
(0.2)…….bb97
bb98bb1bb2bb3
bb4000Sort
descending…….bb2bb4
bb97bb3bb1
bb98000…….bb2bb4
bb97bb3bb1
bb980class=max_index(scoresfor
bb1);score=max(scoresfor
bb1);Score>
0yesnodrawbboxwithclass
colorskip
bboxNMSalgorithm
setscorestozeroforredundant
bboxes67deepsystems.io00000000020x120x1…….bb97
bb98bb1bb2bb3
bb4Set
zeroifscore<thresh1
(0.2)…….bb97
bb98bb1bb2bb3
bb4000Sort
descending…….bb2bb4
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