Upgrade to Pro — share decks privately, control downloads, hide ads and more …

[輪講] Foreground-Background Segmentation Revealed during Natural Image Viewing

kimny
September 20, 2018

[輪講] Foreground-Background Segmentation Revealed during Natural Image Viewing

論文( http://www.eneuro.org/content/5/3/ENEURO.0075-18.2018 )の輪講で使った資料です.スライド内の図はすべて論文からの引用です.

kimny

September 20, 2018
Tweet

More Decks by kimny

Other Decks in Science

Transcript

  1. ֓ཁ • ࣗવը૾ʹ͓͚Δਤ஍ͷ෼཭ • ώτҎ֎ͷྶ௕ྨͷσʔλ͔Βͭͷϓϩ ηε͕஌ΒΕ͍ͯΔ – ਤʹΑΔଅਐʗ஍ʹΑΔ཈੍ • ௿Ϩϕϧͷը૾ಛ௃Λมௐ͠Ϟσϧʹೖྗ

    • G.3*Λ࢖ͬͯࢹ֮ܦ࿏ͷ֤෦Ґͷ׆ಈΛ ܭଌ͠૬ؔΛऔΓʮ૬ؔը૾ʯΛ࡞੒ • ਤʹΑΔଅਐ͕7ʙ-0$ MBUFSBM PDDJQJUBMDPNQMFY ͰݟΒΕɼ஍ʹΑΔ཈ ੍͕7ͱ-0$ͷΈͰݟΒΕͨ
  2. ਤ஍෼཭ͷඞཁੑͱ՝୊ • 4DFOFTFHNFOUBUJPO͸ཧ࿦తͳղͷͳ ͍໰୊<8VFUBM > • ਤ஍෼཭͸पғͷཧղ΍෺ͷࣝผͷॳظ ஈ֊ͱͯ͠ॏཁ<#JFEFSNBO > •

    ਓ͸ࣗવը૾ͷҰ؏ͨ͠෼ׂ͕Ͱ͖Δ <'PXMLFTFUBM > • ͔͠͠$//ͷ݁ՌʹΑΔͱ4DFOF TFHNFOUBUJPOͷجૅͱͳΔܭࢉػతʗਆ ܦੜཧֶతϓϩηεͱ΋ʹ·ͩΘ͔ͬͯ ͍ͳ͍<)FFUBM >
  3. ࣗવը૾Λର৅ͱͨ͠ݚڀ • ͔͠͠ਤ஍෼཭͸OPOFDPMPHJDBMͳܹࢗ Ͱௐ΂ΒΕ͖ͯͨ • ਓ޻ܹࢗʹର͢ΔԠ౴ͷϞσϧ͕ࣗવը ૾ʹରͯ͠͸࠷దͰ͸ͳ͍<%BWJEFUBM  'FMTFOBOE%BO >

    • ਓ޻ʗࣗવը૾Λ༻͍ͨαϧͷ#0͕ௐ΂ ΒΕ͍ͯΔ<)FTTFBOE5TBP 8JMMJGPSEBOE WPOEFS)FZEU >͕ώτʹ͍ͭͯ͸͚ܽ ͍ͯΔ
  4. ຊݚڀͷ໨తͱର৅ • ࣗવը૾ΛडಈతʹݟΔͱ͖ͷॲཧͱ͠ ͯਤͷڵฃʗ஍ͷ཈੍ޮՌʹண໨ • G.3*σʔλ<,BZFUBM >Λ࢖༻ • ̓ͭͷSFHJPOTPGJOUFSFTU 30*T

    ͷ׆ಈ Λௐ΂Δ – 7 7 7 7" 7# 7 -0$ • #FSLFMFZ4FHNFOUBUJPO%BUBTFUʹ͋Δ ຕͷࣗવը૾Λ༻͍Δ – (SPVOEUSVUIͷ෼ׂ͕͋Δ
  5. ఏҊख๏ʢʣ • γʔϯ෼ׂͷͨΊͷ໌ࣔతͳϞσϧʹཔ Βͣɼੜ෺ֶతʹ΋ͬͱ΋Β͍͠1SF GJMUFSJOHϞσϧΛ࢖ͬͨख๏ • ݩͷܹࢗͰ͸ͳ͘දݱతͳಛ௃ʹରͯ͠ ܭࢉΛ͢Δख๏</BTFMBSJTFUBM >ʹࣅͯ ͍Δ

    • ௿Ϩϕϧͷಛ௃͔ΒܹࢗΛϑΟϧλϦϯ άˠݻఆͷϞσϧʹೖྗ • ϞσϧͱG.3*ͷ݁Ռ͸SFQSFTFOUBUJPOBM TJNJMBSJUZBOBMZTJT 34" <,SJFHFTLPSUFFUBM  >ͰධՁ
  6. G.3*EBUB • ඃݧऀɿਓʢஉɼࡀʗࡀʣ • ܹࢗ – ͷάϨΠεέʔϧը૾ɼάϨΠഎܠ – ࢹ໺֯›ʢQJYFMʣ –

    ඵఏࣔ – தԝʢ›ɿQJYFMʣͷന͍࢛֯ʹ஫ࢹ • ܹࢗͷఄࣔʹ߹Θͤͯͭͷࢹ֮30*T ʢ7 7 7 7" 7# 7 -0$ʣͷ ׆ಈΛநग़
  7. $PNQVUBUJPOBM NPEFMT • ͜Ε·Ͱͷܦݧ͔ΒͭͷඇֶशϞσϧΛ બ୒<,IBMJHI3B[BWJBOE,SJFHFTLPSUF > – ͭ͸ॳظࢹ֮໺Ͱ೴׆ಈͱߴ͍૬͕ؔ͋Δ – ΄͔ͭ͸-0$ͱߴ͍૬͕ؔ͋Δ

    • ͢΂ͯͷϞσϧ͸ੜ෺ֶతͳಛ௃Λ΋ͱ ʹ͍ͯ͠Δ – ΨϘʔϧϑΟϧλɼը૾ͷޯ഑ – (*45 %FOTF4*'5 1)0( -#1 • ܹ͕ࢗάϨΠεέʔϧͰαΠζ͕ݻఆͳ ͷͰɼ৭΍ྠֲͷ৘ใ͕ࣦΘΕ͍ͯΔ
  8. 34"ʢʣ • ϞσϧͱG.3*ͷ૬ؔΛऔΔͨΊʹ – ඇόΠΞεԽ • ϞσϧͷॏΈ෇͖࿨ʹجͮ͘GPMEDSPTT WBMJEBUJPOख๏Λ։ൃ – ͸͡Ίʹˋͷ3%.ͰϞσϧͷॏΈΛઢܗճؼͰܾఆ

    – ͭ͗ʹ࢒Γˋͷ3%.ͰG.3*ͱNPEFMͷ૬ؔΛௐ΂Δ – ճͷࢪߦͰಘͨ૬ؔ܎਺͸ฏۉԽ – ͜ͷղੳ͸̓ͭͷ30*Ͱಠཱͯ͠ߦͬͨ – ૬ؔ܎਺ͷ4&͸ܹࢗͷϒʔτετϥοϓͰਪ ఆʢΠςϨʔγϣϯʣ<&GSPOBOE5JCTIJSBOJ  >
  9. 4JHOJGJDBODF UFTUJOHʢʣ  ֤30*ͰɼܹࢗΛϒʔτετϥοϓͰα ϯϓϦϯά͠ϊΠζਪఆʹΑΓ4&Λࢉग़ ʢJUSʣ  ֤30*ͰDPOUSPMWPYFMͷ਺ΛϥϯμϜʹ ܾΊɼDPOUSPMWPYFMͷܹࢗʹର͢Δ൓Ԡ Ͱؼແ3%.Λ࡞੒

     ೋਓͷඃݧऀͷؼແ3%.ͷ૬ؔΛܭࢉ  ϑΟϧλϦϯάͷ֤εςοϓ͝ͱʹ ݸͷЛͱؼແ෼෍ΛಘΔͨΊʹ ݸͷ30*TQFDJGJDͳؼແ3%.ͱϞ σϧ3%.ͷ૬ؔΛऔΔ
  10. 'PSFHSPVOEJTFOIBODFEJOBMMUIF UFTUFESFHJPOT  • ͜ͷղੳ͸̎ͭͷજࡏతޮՌΛআ֎ – ࣗવը૾͸γʔϯͷதԝͷ෺ମͰಛ௃͚ͮΒ ΕΔ<"MFYFFUBM > •

    ύʔϛϡςʔγϣϯςετʹ͓͍ۭͯؒ෼෍ͱϐ Ϋηϧ਺͕ݻఆͳͷͰಉ͡όΠΞε͕ؼແ෼෍ʹ – ਤͱ஍ͷίϯτϥετͷόΠΞε • ίϯτϥετͷ3.4ΛHSPVOEUSVUIʹ߹Θͤͨ
  11. ԾઆΛࢧ࣋͢Δͭͷ݁Ռ  34"Λ࢖͏͜ͱͰɼϞσϧ͕ਤʹରͯ͠͸ 7 7 -0$ɼ஍ʹରͯ͠͸7 7ͷΈ͕ ༏Ґʹ૬ؔ͢Δ͜ͱΛࣔͨ͠  બ୒ͨ͠30*ʹ͓͍ͯίϯτϥετେ͖͞

    ҐஔʹґଘͤͣਤʹΑΔଅਐޮՌ͕͋Δ – ࢹ֮ॲཧܦ࿏ͷෳ਺ͷྖҬʹ·͕ͨͬͯਤ஍෼ ཭Λߦ͍ͬͯΔূڌˠαϧͷ#0ࡉ๔͕77 Ͱ͸ෳ਺ඞཁͰ͋Δ<)FTTFBOE5TBP >ͷͱҰ ॹ  7ͱ-0$ͷ஍ʹؔ࿈ͨ͠৘ใͷ཈੍͕෼ ׂͷূڌͱͳΔ
  12. 'PSFHSPVOETFHNFOUBUJPOBTBQSPYZ GPSTIBQFQSPDFTTJOH  • ϞσϧʹΑͬͯಘΒΕΔ૬ؔը૾ͷධՁ ͸͜Ε·Ͱͷਆܦੜཧֶత஌ݟʹج͍ͮ ͯߦ͏ • ྫ͑͹-0$͸ͲͪΒ͔ͷػߏͱղऍͰ͖ Δ

    – എܠΛ཈੍͠ͳ͕ΒਤશମΛ༏ઌతʹॲཧ – ಛ௃ݕग़ثͱͯ̍ͭ͠ͷࢹ֮తଐੑʢFHೣ ͷͻ͛ʣʹνϡʔϯ͓ͯ͠Γ཈੍͸͠ͳ͍ • ͲͪΒʹͤΑࠓճͷ݁Ռ͸-0$͸෺ମς Ϋενϟͱܗঢ়ʹબ୒తͰ͋Γɼ஍ͷ৘ ใͷӨڹΛड͚ͳ͍͜ͱΛ͍ࣔͯ͠Δ
  13. 'PSFHSPVOETFHNFOUBUJPOBTBQSPYZ GPSTIBQFQSPDFTTJOH  • 7ͱ-0$ͷ૬ؔը૾͸ਤΛ࢒͠ͳ͕Βڧ ͍஍཈੍ – 7ͷো֐͕ॏͳͬͨਤܗͷࣝผ࣌ؒΛ௕͘͢ Δ<-FFLFUBM >͜ͱͱҰ؏͍ͯ͠Δ

    • ਤʹؔ͢ΔॲཧΛ͍ͯ͠ΔͷͰ෺ମೝࣝ • ࠷ۙͷݚڀͰ͸7ʹ͓͚Δߴ࣍ͷࢹ֮ػ ೳ͸ಛ௃ͷ౷߹΍ྠֲͷ׬੒<3PFFUBM  >