メルカリにおける写真検索機能

by KosukeArase

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ϝϧΧϦʹ͓͚Δࣸਅݕࡧػೳ ߥ੉ߊհ !,PTVLF"SBTF 4PGUXBSF&OHJOFFSBU"*&OHJOFFSJOH5FBN

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ࣗݾ঺հ ߥ੉ߊհ ,PTVLF"SBTF w "*&OHJOFFSJOH5FBNΤϯδχΞ w ౦ژେֶେֶӃݪాݚڀࣨଔ w ೥݄d೥݄Πϯλʔϯ w ೥݄৽ଔೖࣾ w ೥݄dࣸਅݕࡧϓϩδΣΫτ 5FDI-FBE w ઐ໳ը૾ೝࣝɼ࣍ݩ఺܈ೝࣝ w ग़඼࣌ͷը૾ೝࣝػೳࣸਅݕࡧػೳ w 5XJUUFS (JU)VC!,PTVLF"SBTF

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8IBUJTࣸਅݕࡧ ಈըϦϯΫIUUQTZPVUVCFL5OJ&W0$H* w ͍ΘΏΔը૾ݕࡧػೳ J04 ͷΈ w ঎඼໊Λ஌Βͳͯ͘΋ը૾͔Β঎඼ΛݕࡧՄೳ

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4ZTUFN0WFSWJFX ը૾ొ࿥ϑϩʔ USBJOJOH ը૾ݕࡧͷϑϩʔ TFSWJOH *OWFSUFEGJMFTZTUFNXJUIUIF BTZNNFUSJDEJTUBODFDPNQVUBUJPO *7'"%$*7'12 <+ÉHPV > Object Detection (SSD-MobileNet v2)

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8IBUJTࣸਅݕࡧ w ࣸਅݕࡧͷϞσϦϯάͱγεςϜʹؔ࿈ͯ͠ܭຊͷ࿦จΛൃද w 5BLVNB:BNBHVDIJ ,PTVLF"SBTF 3JLV5PHBTIJ 4IVOZB6FUB   $MPTJOHUIF(BQ#FUXFFO2VFSZBOE%BUBCBTF  UISPVHI2VFSZ'FBUVSF5SBOTGPSNBUJPOJO$$F$PNNFSDF7JTVBM4FBSDI   5IF4*(*38PSLTIPQ0OF$PNNFSDF 4*(*3F$PN` w ࢁޱ୓ਅɼதՏ޺จɼઍ༿ཽհɼߥ੉ߊհɼ  $$ϚʔέοτϓϨΠεʹ͓͚ΔϏδϡΞϧݕࡧγεςϜɼ  ୈճը૾ͷೝࣝɾཧղγϯϙδ΢Ϝ .*36 ɼ w ·্ͣͷຊͷ࿦จΛ঺հ͢ΔܗͰϝϧΧϦͷࣸਅݕࡧٕज़ʹ͍ͭͯ࿩͠ɼ  ͦͷޙࠓޙͷల๬ʹ͍͓ͭͯ࿩͠͠·͢ɽ

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$MPTJOHUIF(BQ#FUXFFO2VFSZBOE%BUBCBTF UISPVHI2VFSZ'FBUVSF5SBOTGPSNBUJPO JO$$F$PNNFSDF7JTVBM4FBSDI 5BLVNB:BNBHVDIJ ,PTVLF"SBTF 3JLV5PHBTIJ 4IVOZB6FUB 4*(*3F$PN`

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໰୊఺ w $$F$PNNFSDFͰ͸ɼग़඼ऀ΋ߪೖऀ΋Ұൠফඅऀ w ଟ͘ͷ৔߹ɼ঎඼͸চ΍ςʔϒϧ্ͰࡱӨ͞ΕΔ w ҰํɼΫΤϦʹ͸ண༻ը૾͕ଟ͍͕ɼ  ͦͷ৔߹ண༻ը૾͕ݕࡧ͞Ε΍͍͢ w ͜ͷΑ͏ͳݕࡧ݁Ռ͸  #$F$PNNFSDFΛ࿈૝ͤ͞ɼ  ग़඼ऀͷग़඼ҙཉʹѱӨڹΛ  ٴ΅͢Մೳੑ͕͋Δ<)BHJV > ")BHJVFUBM l/FUXPSL&GGFDUT"SFO`U&OPVHIz   )BSWBSE#VTJOFTT3FWJFX

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ͱͳΔΑ͏ͳ ಛ௃ม׵ϕΫτϧ Λࢉग़͢Δ ఏҊख๏lண༻zͷಛ௃ΛऑΊΔಛ௃ม׵ ʔ ʔ ʔ ʔ ಛ௃நग़ث 㲒㲒㲒㲒

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ఏҊख๏lண༻zͷಛ௃ΛऑΊΔಛ௃ม׵ 㲒 ʔ ʔ ʔ ʔ ಛ௃நग़ث ੒ཱ͠ͳ͍ 㲒㲒㲒

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ಛ௃දݱ ண༻ը૾͔Βɼlண༻zͷϕΫτϧ ಛ௃ม׵ϕΫτϧ ΛҾ͘ ʔ ʔ Λɼ-ϊϧϜ͕ ͷඇෛϕΫτϧͷಛ௃நग़ثͱߟ͑ͯ 㲒

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ಛ௃දݱ lண༻zը૾Ͱ͸ͳ͍ಛ௃ϕΫτϧ͔Βɼ lண༻zͷϕΫτϧ ಛ௃ม׵ϕΫτϧ ΛҾ͍ͨ࣌ͷӨڹΛͳͤ͘Δ͔΋͠Εͳ͍ ʔ 㲒 ʔ Λɼ-ϊϧϜ͕ ͷඇෛϕΫτϧͷಛ௃நग़ثͱߟ͑ͯ

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ಛ௃ม׵ϕΫτϧ τοϓεண༻ը૾ τοϓεඇண༻ը૾ ϘτϜεண༻ը૾ ϘτϜεඇண༻ը૾

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ಛ௃நग़ث w .PCJMF/FUW w ΤοδσόΠεͰͷॲཧΛݟਾ͑ͯͷϞσϧબ୒ w ࣝผ໰୊ͱֶͯ͠श w (MPCBM"WFSBHF1PPMJOHͷग़ྗ E Λ  -ਖ਼نԽͨ͠΋ͷΛಛ௃ϕΫτϧͱͯ͠ར༻ w σʔληοτ w ໿ඦສը૾ɼ໿ Ϋϥε w ϒϥϯυɼ໛༷ɼΧςΰϦͷ૊Έ߹Θͤ FHʮφΠΩετϥΠϓΰϧϑϙϩγϟπʯ ʮ༡ٔԦτϨʔσΟϯάΧʔυʯ w ֶश݁Ռ w "DDVSBDZ5PQ 5PQ ඇෛͷཁૉͰߏ੒͞ΕΔϕΫτϧ

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ݕূ݁Ռ ඇண༻ը૾ ண༻ը૾ ண༻ը૾ $SPQQFE ඇண༻ண༻ը૾Λ ຕͣͭɼ߹ܭ ຕ༻ҙ͠ɼຕΛΫΤϦը૾ͱͯ͠ར༻ ݕࡧ݁Ռ͕ඇண༻ը૾͔ͭΧςΰϦ͕Ұகͨ͠৔߹ʹਖ਼ղͱΈͳ͠ɹ N"1!ɹ ͰධՁ ண༻ը૾ʹରͯ͠େ෯ͳվળ͕ΈΒΕɼඇண༻ը૾ʹରͯ͠΋ޮՌ͕ಘΒΕͨ N"1!

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ݕূ݁Ռ ԯ঎඼͔Βͷݕࡧ

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ݕূ݁Ռ ԯ঎඼͔Βͷݕࡧ ಛ௃ม׵ʹ൐͏෰০඼Ҏ֎΁ͷӨڹ΋΄ͱΜͲݟΒΕͳ͍

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·ͱΊ w $$F$PNNFSDFಛ༗ͷը૾ݕࡧͰͷ՝୊ʹର͢ΔऔΓ૊Έ w ݁Ռʹண༻ը૾͕ଟؚ͘·ΕΔͱग़඼ʹ΋ӨڹΛٴ΅͢Մೳੑ͕͋Δ w ΫΤϦը૾ͷಛ௃͔Βlண༻zͷಛ௃ΛऑΊΔಛ௃ม׵ΛఏҊ w ண༻ը૾ͷΫΤϦʹରͯ͠ݕࡧਫ਼౓ͷେ෯ͳվળΛ֬ೝ w ඇண༻ը૾ʹ͍ͭͯ΋ѱӨڹ͸ݟΒΕͣɼఏҊख๏ͷ༗ޮੑΛ֬ೝ w ΫΤϦ΁ͷޙॲཧͷΈͷૢ࡞Ͱ͋ΔͨΊɼܰྔ͔ͭมߋ͕༰қ w ࠓޙͷ՝୊ɿఏҊͨ͠ಛ௃ม׵ͷ༗ޮੑʹ͍ͭͯͷཧ࿦తઆ໌

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$$ϚʔέοτϓϨΠεʹ͓͚Δ  ϏδϡΞϧݕࡧγεςϜ ࢁޱ୓ਅɼதՏ޺จɼઍ༿ཽհɼߥ੉ߊհ גࣜձࣾϝϧΧϦ .*36  4ZTUFN5SBDL0SBM

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4ZTUFN0WFSWJFX ը૾ొ࿥ϑϩʔ USBJOJOH ը૾ݕࡧͷϑϩʔ TFSWJOH *OWFSUFEGJMFTZTUFNXJUIUIF BTZNNFUSJDEJTUBODFDPNQVUBUJPO *7'"%$*7'12 <+ÉHPV > Object Detection (SSD-MobileNet v2)

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w %PDLFS w ίϯςφ؀ڥ 04ϨϕϧͷԾ૝Խ؀ڥ Λఏڙ͢Δϛυϧ΢ΣΞ w ҟͳΔ؀ڥͰૉૣ͘ΞϓϦέʔγϣϯΛಈ࡞Մೳ w ӡ༻ίετͷ௿ݮ΍γεςϜͷ҆ఆԽ w ,VCFSOFUFT LT w ෳ਺ͷίϯςφͷσϓϩΠɼεέʔϦϯάɼ؅ཧΛߦ͏ͨΊͷ  ίϯςφΦʔέετϨʔγϣϯγεςϜ w $VTUPN3FTPVSDF%FGJOJUJPO $3% ͱݺ͹ΕΔಠࣗͷϦιʔεΛఆٛͰ͖Δػೳ͕͋Γɺ  ։ൃऀ͸ͦͷػೳΛհͯ͠LTͷػೳΛ֦ுͰ͖Δ w "84 ($1ͷϚϧνΫϥ΢υߏ੒Λ࠾༻ USBJOJOH&,4 TFSWJOH(,& %PDLFSBOE,VCFSOFUFT

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w$VTUPN3FTPVSDF%FpOJUJPO $3%   ಠࣗʹϦιʔεΛఆٛͰ͖ΔLTͷػೳ wΧελϜϦιʔεͱΧελϜίϯτϩʔϥͰߏ੒ wΧελϜίϯτϩʔϥ͕ΧελϜϦιʔεͷ  ϥΠϑαΠΫϧঢ়ଶʹԠͯ͡  Ϋϥελͷঢ়ଶΛίϯτϩʔϧ͢Δ 8IBUJT$VTUPN3FTPVSDF%FGJOJUJPO $3% LVCFDUMDSFBUFGGPP@DSEZNM LVCFDUMDSFBUFGGPPZNM

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"SDIJUFDUVSFɹ

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"SDIJUFDUVSF֓ཁਤ "84 ($1

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5SBJOJOHɾϦιʔεͷ࡞੒ "84 ($1

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w όονॲཧͷ֤޻ఔΛݸผͷίϯςφΠϝʔδͰ࣮ߦ w ϥΠϒϥϦͷґଘؔ܎ͳͲ؀ڥφΠʔϒͳ.-ύΠϓϥΠϯͷ໰୊Λղܾ w ύΠϓϥΠϯ%"(͸:".-Ͱهड़ w ֤޻ఔͷೖग़ྗ͸1FSTJTUFOU7PMVNFʢҎԼ17ʣΛհ͢ 5SBJOJOHɾίϯςφϕʔεύΠϓϥΠϯ $3%$VTUPN3FTPVSDF%FGJOJUJPO "//"QQSPYJNBUF/FBSFTU/FJHICPS

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5SBJOJOHɾϦιʔεͷ࡞੒ w )PVSMZ %BJMZ .POUIMZόον͕ଘࡏ w 5SBJOJOHDVTUPNSFTPVSDFΛ  $SPO+PC͕࡞੒ w $VTUPNDPOUSPMMFS͕  DVTUPNSFTPVSDFͰઃఆ͞Εͨ  ίϯςφϕʔεύΠϓϥΠϯΛ࣮ߦ

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5SBJOJOHɾϦιʔεͷ࡞੒ w શͯͷόον࣮ߦ৘ใ͕  ΧελϜϦιʔεͱͯ͠  LT্ʹ࢒Δ w ಉ͡ॲཧΛ࠶࣮ߦग़དྷΔͨ Ίɺόονͷ࠶࣮ߦΛ൐͏ ো֐෮چ࡞ۀ͕༰қ

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ը૾ͷμ΢ϯϩʔυ "84 ($1

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w 4্ʹଘࡏ͢ΔϝϧΧϦɾΠϝʔδετΞ͔Β঎඼ը૾Λμ΢ϯϩʔυ w ύΠϓϥΠϯ্΋ͬͱ΋͕͔͔࣌ؒΔ޻ఔ ը૾਺͕๲େͳͨΊ w ͦͷͨΊ17ʹҰఆظؒΩϟογϡ͢ΔࣄʹΑͬͯ࠶ΠϯσοΫε͕  ඞཁͳ࣌ʹ͸ૉૣ͘ύΠϓϥΠϯΛճͤΔΑ͏ʹ͍ͯ͠Δ ը૾ͷμ΢ϯϩʔυ

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ΞηοτͷΞοϓϩʔυ "84 ($1

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w ύΠϓϥΠϯͷ੒Ռ෺Ͱ͋Δಛ௃ϕΫτϧͱ  ۙࣅ࠷ۙ๣୳ࡧ "QQSPYJNBUF/FBSFTU/FJHICPS "// *OEFYΛ  ϞσϧϨϙδτϦʹόʔδϣϯ؅ཧ͞Εͨঢ়ଶͰอଘ w ϞσϧϨϙδτϦ͸($4 (PPHMF$MPVE4UPSBHF ্ʹߏங ΞηοτͷΞοϓϩʔυ

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4FSWJOHΠϝʔδͷϏϧυ "84 ($1

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ϞσϧϨϙδτϦ͸*NBHF#VJMEFSͱݺ͹ΕΔEBFNPOʹΑΓ؂ࢹ͞Ε͍ͯΔ w ৽͍͠Ξηοτ͕௥Ճ͞ΕΔͱࣗಈͰ4FSWJOHίϯςφΠϝʔδΛϏϧυ w ίϯςφΠϝʔδ͸"//*OEFY౳4FSWJOHʹ  ඞཁͳϦιʔεΛશؚͯΜͰ͍Δ w Ϗϧυ͞ΕͨίϯςφΠϝʔδΛίϯςφϨδετϦʹϓογϡ 4FSWJOHΠϝʔδͷϏϧυ (PPHMF $MPVE 4UPSBHF (PPHMF $POUBJOFS 3FHJTUSZ *NBHF #VJMEFS %BFNPO ؂ࢹ "//*OEFY %PDLFS *NBHF

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4FSWJOHϦιʔεͷ࡞੒ "84 ($1

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4FSWJOHɾϦιʔεͷ࡞੒ w *NBHF#VJMEFS͸ɼ  ίϯςφΠϝʔδΛϏϧυͨ͠ޙ  4FSWJOHΧελϜϦιʔεΛ࡞੒ w 4FSWJOHΧελϜίϯτϩʔϥ͸  $3%ϦιʔεͷઃఆΛݩʹ  ඞཁͳ%FQMPZNFOUɼ4FSWJDF౳Λ࡞੒ w ຊγεςϜͰ͸ߏங͞Εͨ  "//*OEFYΛݸผͷ  *OEFYαʔϏεͱͯ͠σϓϩΠ

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4FSWJDFσΟεΧόϦ "84 ($1

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αʔϏεσΟεΧόϦ w Ϋϥελ্ʹଘࡏ͢Δ*OEFYαʔϏ εΛ,VCFSOFUFTΛհͯࣗ͠ಈతʹ औಘ͢Δ w ͳΔ΂͘େ͖ͳཻ౓ͷ*OEFYΛ  ࢖༻͢ΔΑ͏ɺҟͳΔظؒɾཻ౓ ͷ*OEFYαʔϏε )PVSMZ %BJMZ .POUIMZ Λࣗಈతʹ૊Έ߹ΘͤΔ w 3&45*OEFYαʔϏεؒͷ  ϓϩτίϧ͸H31$Λ࢖༻

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֓ཁਤৼΓฦΓ "84 ($1

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.-1MBUGPSN-ZLFJPO ࣸਅݕࡧ͸-ZLFJPOͱݺ͹ΕΔ಺੡ͷ.-1MBUGPSN্ʹ ߏங͞Ε͓ͯΓɺԼهͷػೳ͸-ZLFJPOͷػೳΛ࢖༻͍ͯ͠Δ w 5SBJOJOH4FSWJOH$3%ΧελϜίϯτϩʔϥ w ίϯςφϕʔεύΠϓϥΠϯ w 5SBJOJOH4FSWJOHίϯςφΠϝʔδϏϧμʔ w ϞσϧϨϙδτϦ

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ϝϧΧϦʹ͓͚ΔϏδϡΞϧݕࡧγεςϜ·ͱΊ w ίϯςφϕʔεͷ࠶ݱੑͷߴ͍γεςϜ w ,VCFSOFUFTͷ$3%ΧελϜίϯτϩʔϥ΍αʔϏεσΟεΧόϦ౳Λ׆༻ w ಺੡ͷ.-1MBUGPSN -ZLFJPO Ͱ࣮ݱ͞Ε͍ͯΔػೳΛར༻͠ɺ  ίϯςφϕʔεύΠϓϥΠϯ౳ϩόετͳγεςϜΛߏங w Ϋϥ΢υΠϯϑϥΛ,VCFSOFUFTͰந৅Խ͢ΔࣄʹΑͬͯɺϚϧνΫϥ΢υΛ ҙࣝ͢Δ͜ͱͳ͘ӡ༻Մೳ

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/FYU'VUVSFɹ

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3FBMUJNF*NBHF4FBSDI w &EHFଆͰPCKFDUEFUFDUJPOGFBUVSFFYUSBDUJPO w GFBUVSFWFDUPSΛΫΤϦͱ͠  "//*OEFYTFSWJDF͔Βྨࣅ঎඼Λऔಘ w ϦΞϧλΠϜͳΠϯλϥΫγϣϯ w 69্େ͖ͳϝϦοτ͕͋Δ

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w ༷ʑͳτϨʔυΦϑ໰୊͕ଘࡏ͢Δ w "DDVSBDZ w -BUFODZ w &OFSHZDPOTVNQUJPO w .PEFMTJ[F w ໨తͷ69Λୡ੒͢ΔͨΊʹɺ  ΞϧΰϦζϜɺΤϯδχΞϦϯά྆ํͰ ͦΕΒͷόϥϯεΛߟྀ͢Δඞཁ͕͋Δ 8IBUNVTUIBQQFOUPNBLF%//XPSLPOFEHF ΦϖϨʔγϣϯʹΑͬͯίετ͕ҧ͏ NPCJMFEFWJDFͰαϙʔτ͍ͯ͠Δ(16ΠϯλʔϑΣʔεͷγΣΞ

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4FSWFS TJEF $MJFOU TJEF w αʔόଆͷ%//GSBNFXPSLʹ͸ 5FOTPS'MPX4FSWJOHΛ࢖༻ w ΫϥΠΞϯτଆͰ͸5FOTPS'MPX -JUF.FEJB1JQFΛ࢖༻ w .FEJB1JQFΛ࢖༻͢Δ͜ͱͰલॲ ཧ΍ޙॲཧ΋4*.%౳Λ࢖༻ͯ͠ ޮ཰ԽͰ͖Δ 5' -JUF 0QUJPOBM &EHFGVODUJPOBSDIJUFDUVSF

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5IBOLZPVBMMGPSDPNJOHUPEBZɹ 4PGUXBSF&OHJOFFS &OHJOFFSJOH.BOBHFS 8FBSFIJSJOH