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色恒常性仮説に基づく色補正ライブラリcolorcorrect / 2015-01-31-kantocv27

色恒常性仮説に基づく色補正ライブラリcolorcorrect / 2015-01-31-kantocv27

@関東CV勉強会 2015/01/31

shunsukeaihara

January 30, 2015
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  1. ࣗݾ঺հ • ҄൧ݪढ़հ (http://argmax.jp) @shunsukeaihara • GunosyͷϚωʔδϟʔ • ޿ࠂ഑৴γεςϜͷ։ൃશମͱR&DܥΛ୲౰ •

    ઐ໳: ܭࢉݴޠֶ • Pythonͱඇಉظ෼ࢄγεςϜΛ޷Ή • DNN੠࣭ม׵ͱ͔झຯͰ΍ͬͯΔ • ը૾ॲཧɾԻ੠৴߸ॲཧ౳Ͱ͍Ζ͍ΖϥΠϒϥϦ࡞ͬͯΔ • https://bitbucket.org/aihara
  2. ը૾ͷޫݯ৭ͱϗϫΠτόϥϯε ͸࣮σʔλͰ͸όϥόϥ • ৭Λ༻͍ͨ෺ମೝࣝΛߦ͓͏ͱ͢Δͱɺֶशσʔληοτͱ৭͕ͣΕ͍ͯΔͱ൑ఆਫ਼౓͸ མͪΔ • ৭৘ใΛ༻͍ͨBag-Of-Keypointܥͷख๏Ͱ͸݁ߏ৭ิਖ਼͕ޮ͍ͯ͘Δ • ྨࣅը૾ݕࡧ /

    ܠ؍ը૾͔Βͷ෺ମݕग़ͱ͔࡞ͬͨ࣌ʹ૬౰ϋϚͬͨ • Deep Learningͱ͔͍Ζ͍Ζظ଴ͯ͠Δ͚Ͳɺ࣮ࡍʹ࢓ࣄͰֶशσʔληοτूΊΔͱ ͳΔͱ͍ΖΜͳࡱӨ৚݅ͷը૾ूΊΔͷ݁ߏେม • ෳ਺র໌৚݅ʹର͢ΔData AugmentationΑ͘Θ͔Βͳ͍ • ͋ͱɺը૾ͷݟͨ໨ΩϨΠʹ͍ͨ͠ͱ͔͍Ζ͍Ζ͋Δ • ͳΜͱָ͔͔ͨͬͨ͠ͷͰิਖ਼ख๏ͷ࿦จͱ͔͍Ζ͍Ζௐ΂ͨ
  3. ৭߃ৗੑԾઆͷ؆୯ͳ෺ • փ৭Ծઆ • ന৭ޫݯԼͷ৔߹ɺࢹ֮಺ͷ৭ͷฏۉ஋ΛऔΔͱփ৭ (127,127,127)ʹͳΔ͸ͣͳͷͰͦͷζϨΛิਖ਼͢Δ • ً౓ - ৭૬ؔ

    • ࢹ֮಺ͷ৭ʹภΓ͕͋Δ৔߹͸փ৭ԾઆͰ͸߃ৗੑΛ୲อग़ དྷͳ͍ͷͰɺً౓ͱ৭ͷ૬͔ؔΒ৭ͷภΓ͕ޫݯʹΑΔ͔ݩ ͷ෺ମ৭ʹΑΔ͔ਪఆͯ͠ิਖ਼ • ͜ΕΒΛϕʔεʹ༷ʑͳΞϧΰϦζϜ͕ఏҊ͞Ε͍ͯΔ
  4. ࣮૷ͨ͠৭߃ৗੑΞϧΰϦζϜ • gray world • max white • stretch •

    retinex, retinex with adjust • weighted grey world • standard deviation weighted grey world • luminance weighted gray world • standard deviation and luminance weighted gray world • automatic color equalization • ->௒ώϡʔϦεςΟΫε͚ͩͲิਖ਼ྗ͕͍͢͝