ImageMagick実践入門 画像加工サーバを作ってみよう / ImageMagick and image server

新卒エンジニア研修の座学でImageMagickの話をしました。

Transcript

1. ը૾Ճ޻αʔόΛ࡞ͬͯΈΑ͏ Լॏ
   തࢿ
   
   (.0
   1FQBCP
   *OD
   
   ৽ଔΤϯδχΞݚम
   ࠲ֶ *NBHF.BHJDL࣮ફೖ໳
2. ΤϯδχΞ
   ೥౓ೖࣾɾ৽ଔظ Լॏ
   തࢿ
   
   !TIJNPKV@ &$ࣄۀ෦
   46;63*νʔϜ TIJNPKVPSH
5. ͓͠ͳ͕͖ wࠓ೔ͷΰʔϧ
   w46;63*ͱը૾ॲཧ
   w*NBHF.BHJDLΛ৮ͬͯΈΑ͏
   wը૾Ճ޻αʔόΛ࡞ͬͯΈΑ͏
6. ࠓ೔ͷΰʔϧ w*NBHF.BHJDLΛ࢖༻ͨ͠ը૾Ճ޻Λ΍ͬͯΈͯɺ
   wը૾ॲཧͨͷͦ͠͏ʂͬͯͳΔ͜ͱ
   wഎޙʹ͋Δ਺ࣜ΍ɺମܥతͳཧղͷͨΊͷཧ࿦ʹ͍ͭ ͯ͸ ൃදऀͷ஌ࣝෆ଍ʹΑΓ ѻ͍·ͤΜ
7. 46;63*ͱը૾ॲཧ
8. 46;63*ͱը૾ॲཧ wΞοϓ͞Εͨը૾ΛΞΠςϜը૾ ͱ߹੒ͯ͠αϜωΠϧΛ࡞Δ
   w5γϟπͷγϫʹ߹Θͤͯը૾Λ มܗ σΟεϓϨΠεϝϯτϚο ϐϯά ͤͨ͞Γ
   wӨΛ͚ͭͨΓ৭Λม׵ͨ͠Γ
9. 46;63*ͱը૾ॲཧ wΞοϓ͞Εͨը૾ΛΞΠςϜը૾ ͱ߹੒ͯ͠αϜωΠϧΛ࡞Δ
   w5γϟπͷγϫʹ߹Θͤͯը૾Λ มܗ σΟεϓϨΠεϝϯτϚο ϐϯά ͤͨ͞Γ
   wӨΛ͚ͭͨΓ৭Λม׵ͨ͠Γ
10. *NBHF.BHJDLΛ
    ৮ͬͯΈΑ͏
11. ͱΓ͋͑ͣΠϯετʔϧ $ brew install imagemagick OR $ sudo apt-get install -y imagemagick OR $ sudo yum -y install ImageMagick
12. *NBHF.BHJDL wը૾Ճ޻ͱ͍͑͹͜Εͱ͍͏༗໊ϥΠϒϥϦ
    wϝδϟʔ͔ΒϚΠφʔ·Ͱ͞·͟·ͳը૾ܗࣜʹରԠ
    wػೳ͕ଟ͗ͯ͢੬ऑੑ΋ͨͼͨͼൃݟ͞ΕΔ͘Β͍ʜ
    w$Ͱ࣮૷͞Εɺଟ͘ͷݴޠͰόΠϯσΟϯά͕͋Δ
    w3VCZɿSNBHJDL
    NJOJ@NBHJDL
    HFN
    w1)1ɿ*NBHJDL֦ுϥΠϒϥϦ
    ͳͲ
13. ίϚϯυ wJNBHFNBHJDLͱ͍͏ίϚϯυ͸ͳ͍ 
    wػೳ͝ͱʹDPOWFSU΍JEFOUJGZͳͲͷίϚϯυʹΘ͔Ε͍ͯΔ
    wͨͩ͠ɺ*NBHF.BHJDL
    ͔Β͸͢΂ͯNBHJDLίϚϯυ΁ͷγϯϘ ϦοΫϦϯΫʹͳ͍ͬͯΔ
14. *NBHF.BHJDL
    
    6CVOUV
     $ ls -Alh /usr/lib/x86_64-linux-gnu/ImageMagick-6.8.9/bin-Q16 total 88K -rwxr-xr-x 1 root root 6.3K Jul 31 13:22 animate -rwxr-xr-x 1 root root 6.3K Jul 31 13:22 compare -rwxr-xr-x 1 root root 6.3K Jul 31 13:22 composite -rwxr-xr-x 1 root root 6.3K Jul 31 13:22 conjure -rwxr-xr-x 1 root root 6.3K Jul 31 13:22 convert -rwxr-xr-x 1 root root 6.3K Jul 31 13:22 display -rwxr-xr-x 1 root root 6.3K Jul 31 13:22 identify -rwxr-xr-x 1 root root 6.3K Jul 31 13:22 import -rwxr-xr-x 1 root root 6.3K Jul 31 13:22 mogrify -rwxr-xr-x 1 root root 6.3K Jul 31 13:22 montage -rwxr-xr-x 1 root root 6.3K Jul 31 13:22 stream
15. *NBHF.BHJDL
    
    .BD
    )PNFCSFX $ ls -Alh /usr/local/Cellar/imagemagick/7.0.7-7/bin | grep -v config total 64 lrwxr-xr-x 1 shimoju admin 6B 10 7 21:02 animate -> magick lrwxr-xr-x 1 shimoju admin 6B 10 7 21:02 compare -> magick lrwxr-xr-x 1 shimoju admin 6B 10 7 21:02 composite -> magick lrwxr-xr-x 1 shimoju admin 6B 10 7 21:02 conjure -> magick lrwxr-xr-x 1 shimoju admin 6B 10 7 21:02 convert -> magick lrwxr-xr-x 1 shimoju admin 6B 10 7 21:02 display -> magick lrwxr-xr-x 1 shimoju admin 6B 10 7 21:02 identify -> magick lrwxr-xr-x 1 shimoju admin 6B 10 7 21:02 import -> magick -r-xr-xr-x 1 shimoju admin 18K 10 9 18:25 magick lrwxr-xr-x 1 shimoju admin 6B 10 7 21:02 magick-script -> magick lrwxr-xr-x 1 shimoju admin 6B 10 7 21:02 mogrify -> magick lrwxr-xr-x 1 shimoju admin 6B 10 7 21:02 montage -> magick lrwxr-xr-x 1 shimoju admin 6B 10 7 21:02 stream -> magick
16. JEFOUJGZ wը૾ͷ৘ใΛग़ྗͰ͖Δ
    wαΠζΛͬ͞ͱ஌Γ͍ͨͱ͖ͱ͔ɺ
    wେྔͷը૾ͷத͔ΒαΠζ͕ҧ͏΋ͷΛ୳ͨ͠Γͱ͔
17. JEFOUJGZ $ identify *.jpg original.jpg JPEG 800x533 800x533+0+0 8-bit sRGB 104823B 0.000u 0:00.000 resize.jpg JPEG 400x267 400x267+0+0 8-bit sRGB 37116B 0.000u 0:00.000 ϑΥʔϚοτจࣈྻ͸͜͜Β΁Μࢀরɿhttps://www.imagemagick.org/script/escape.php $ identify -format '{"width": %w, "height": %h}' *.jpg | jq { "width": 800, "height": 533 } $ identify -format '%wx%h %f\n' *.jpg | grep -v 800x533 200x200 crop.jpg
18. DPOWFSU w͞·͟·ͳը૾Ճ޻Λߦ͑Δɺ*NBHF.BHJDLͷϝΠϯίϚϯυ
    wҎ߱͸͢΂ͯDPOWFSUίϚϯυΛѻ͍͖ͬͯ·͢
19. ద౰ͳը૾Λ༻ҙ͠·͢ ਖ਼ํܗ͡Όͳ͍΄͏͕͍͍Ͱ͢ɻ͜ͷը૾͸YQY
    ग़యɿIUUQTXXXQBLVUBTPDPNQPTUIUNM
20. ճస
    SPUBUF ճస $ convert -rotate 90 original.jpg rotate.jpg ্Լ൓స $ convert -flip original.jpg flip.jpg ࠨӈ൓స $ convert -flop original.jpg flop.jpg ্Լࠨӈ൓స $ convert -flip -flop original.jpg flipflop.jpg
22. αϯϓϧ
    TBNQMF ϐΫηϧΛؒҾ͘ $ convert -sample 10% original.jpg sample.jpg 10%ʹͳΔΑ͏ʹϐΫηϧΛؒҾ͍ͨ͋ͱɺ1000%ʹͳΔΑ͏ʹ֦େ →ݩը૾ͱಉ͡αΠζͰϞβΠΫ͕͔͔Δ $ convert -sample 10% -sample 1000% original.jpg sample.jpg
24. ϦαΠζ
    SFTJ[F σϑΥϧτͰ͸ΞεϖΫτൺΛม͑ͳ͍ɿࢦఆͨ͠෯ɾߴ͞ʹऩ·ΔΑ͏ʹϦαΠζ͞ΕΔ $ convert -resize 400x400 original.jpg resize.jpg $ identify resize.jpg resize.jpg JPEG 400x267 400x267+0+0 8-bit sRGB 37116B 0.000u 0:00.000 !Λ͚ͭΔͱΞεϖΫτൺΛແࢹͯ͠ࢦఆͨ͠஋ʹϦαΠζ͢Δ $ convert -resize 400x400! original.jpg resize2.jpg ෯·ͨ͸ߴ͞ͷΈࢦఆͰ͖Δ $ convert -resize 400x original.jpg resize3.jpg
26. Τοδݕग़
    FEHF ෆ࿈ଓʹมԽ͍ͯ͠ΔՕॴΛݕग़͢Δ $ convert -edge 5 original.jpg edge.jpg ஋ΛมԽͤͯ͞ΈΑ͏ $ convert -edge 10 original.jpg edge.jpg $ convert -edge 1 original.jpg edge.jpg
28. ੾Γൈ͖
    DSPQ -gravityͰج४఺Λࢦఆ -crop widthxheightͰ੾Γൈ͘αΠζΛࢦఆ +/-Ͱج४఺͔Βͷx,y࠲ඪΛࢦఆ $ convert -gravity center -crop 200x200+0+0 original.jpg crop.jpg ը૾ӈ্Λج४ʹɺxʹ140px,yʹ50pxҠಈ͠ɺͦͷ఺͔Β200x200px੾Γൈ͘ $ convert -gravity northeast -crop 200x200+140+50 original.jpg crop.jpg
30. ృΓ଍͠
    FYUFOU ࢦఆͨ͠αΠζʹͳΔΑ͏ʹ༨നΛ௥Ճ͢Δ ༨നͷ৭͸-backgroundͰࢦఆͰ͖Δ ਖ਼ํܗͷαΠζ͕ඞཁͳͷʹ4:3ͷը૾͔͠ͳ͍ͱ͔ʹศར $ convert -background black -gravity center \ -extent 800x800 original.jpg extent.jpg PNG(ಁա͕ѻ͑ΔϑΥʔϚοτ)Ͱ͋Ε͹transparentͰಁաͰ͖Δ $ convert -background transparent -gravity north \ -extent 1000x1000 original.jpg extent.png
32. ͦΖͦΖ߹੒ͨ͘͠
    ͳ͖ͬͯͨΑͶʁ
33. ͦͷલʹจࣈͷը૾Λ࡞͓ͬͯ͜͏ $ convert -background transparent \ -fill '#ff6060' -font Arial -pointsize 128 label:LGTM lgtm.png ࢦఆαΠζͰ࡞੒ $ convert -size 400x200 -gravity center -background transparent \ -fill '#ff6060' -font Arial -pointsize 128 label:LGTM lgtm.png
34. ߹੒
    DPNQPTJUF original.jpgͷ্ʹlgtm.pngΛ߹੒ͯ͠ɺcompose-over.jpgͱͯ͠ग़ྗ $ convert original.jpg lgtm.png -gravity center \ -compose over -composite compose-over.jpg -geometryͰج४఺͔ΒҠಈ $ convert original.jpg lgtm.png -gravity center -geometry +150+50 \ -compose over -composite compose-over.jpg
36. ඳըϞʔυ
    CMFOE
    NPEF -composeͰඳըϞʔυΛࢦఆ͢Δ ৐ࢉ (multiply) $ convert original.jpg lgtm.png -gravity center -geometry +150+50 \ -compose multiply -composite compose-multiply.jpg ΦʔόʔϨΠ (overlay) $ convert original.jpg lgtm.png -gravity center -geometry +150+50 \ -compose overlay -composite compose-overlay.jpg ݮࢉ (subtract) $ convert original.jpg lgtm.png -gravity center -geometry +150+50 \ -compose subtract -composite compose-subtract.jpg
40. ඳըϞʔυ
    CMFOE
    NPEF wॏͶΒΕͨը૾ΛͲͷΑ͏ʹ߹੒͢Δ͔ΛࢦఆͰ͖Δ
    w IUUQJNBHFNBHJDLSVMF[KQBSDIJWFT
    w1IPUPTIPQͳͲͷը૾ฤूιϑτʹ͋Δ΋ͷͱಉ༷
    w࣮ࡍͲΜͳܭࢉͰࢉग़͞ΕΔ͔͸ιʔεΛಡΊ͹Θ͔Δʜ͕ɺײ֮Λ ͔ͭΉʹ͸(*.1ͷυΩϡϝϯτ͕Θ͔Γ΍͍͢
    w IUUQTEPDTHJNQPSHKBHJNQDPODFQUTMBZFSNPEFTIUNM
    wྫʣ৐ࢉɿ߹੒ը૾ͷ৭
    
    ্ଆͷ৭
    
    Լଆͷ৭
    
    
41. ը૾Ճ޻αʔόΛ
    ࡞ͬͯΈΑ͏
42. -FOTɿ46;63*ͷը૾Ճ޻αʔό w46;63*Ͱ࢖͍ͬͯΔը૾Ճ޻αʔόΛʮ-FOTʯͱݺΜͰ͍Δ
    wը૾ॲཧʹ͸*NBHF.BHJDLΛ࢖༻
    w5γϟπͷαϜωΠϧը૾ੜ੒ॲཧ͸͜͜Β΁Μ
    w ࣾ಺ϦϙδτϦͷ63-ͷͨΊলུ
43. -(5.
    (FOFSBUPS
    ׬੒ͯ͠ͳ͍ wͦͷ໊΋ʮ:04"406ʯ
    wIUUQTHJUIVCDPNTIJNPKVZPTBTPV
    w3&"%.&ΛಡΜͰΠϯετʔϧ͍ͯͩ͘͠͞
    wॳճͷϏϧυ͸ͪΐͬͱ͕͔͔࣌ؒΓ·͢ʜʜ
    wϦϙδτϦ௚Լʹద౰ͳը૾Λஔ͍ͯɺ
 IUUQMPDBMIPTUJNBHFTJNBHFKQH
    ʹΞΫηεͯ͠ΈΔ
44. (Pݴޠ w(PPHMF͕։ൃͨ͠ɺ͍ΖΜͳ΋ͷ͕ͳ͍ݴޠ
    ౖΒΕͦ͏
    wΫϥε͕ͳ͍ɺΑͬͯܧঝ΋ͳ͍
    wྫ֎͕ͳ͍
    wδΣωϦΫε͕ͳ͍
    wؔ਺ܕ༝དྷͷύϥμΠϜ΋ͳ͍
    wෆมม਺΍0QUJPOBMɺNBQ΍pMUFSͳͲͷίϨΫγϣϯૢ࡞
45. (Pݴޠ wݴޠ࢓༷Λখ͘͢͞Δ͜ͱͰɺίϯύΠϧ͕ߴ଎Ͱशಘ΋༰қ
    w޲͔ͳ͍ྖҬ΋͋Δ͕ɺదͨ͠ྖҬͰ͸ҖྗΛൃش͢Δ
    wόΠφϦ͕ੜ੒͞ΕΔͨΊɺ$-*πʔϧ΍ϛυϧ΢ΣΞʹศར
    w੩తܕͷԸܙΛड͚ͳ͕Βɺܕਪ࿦ͰܕΛ໌ࣔͤͣʹ։ൃͰ͖Δ
    wฒߦॲཧΛߦ͏ͨΊͷݴޠ࢓༷ HPSPVUJOF ͕͋Γɺൺֱత؆୯ʹฒ ߦϓϩάϥϛϯά͕Ͱ͖Δ
46. ୅දతͳιϑτ΢ΣΞ wίϚϯυϥΠϯπʔϧ
    wHIRɺQUɺIVHPɺOZBIDMJ
    wϛυϧ΢ΣΞɾαʔό
    w%PDLFSɺDPOTVMɺ%SPOFɺ45/4
    wൺֱతখ͞ͳ ϚΠΫϩαʔϏεࢦ޲ͳ "1*αʔό
    wϩϦϙοϓʂϚωʔδυΫϥ΢υͷ"1*αʔό
    wը૾Ճ޻ɾ഑৴αʔϏε
    *NBHF'MVY
47. ίʔυΛಡΜͰΈΑ͏ wNBJOHP
    wΤϯτϦϙΠϯτɻϦΫΤετϧʔλʔ ίϯτϩʔϥʔ
    w4JOBUSBͳͲͷΑ͏ͳϚΠΫϩϑϨʔϜϫʔΫελΠϧ
    wDPOWFSUFSJNBHFHP
    wը૾Ճ޻Λந৅Խͨ͠ύοέʔδɻ͜͜Ͱ*NBHF.BHJDLΛར༻
48. ίʔυΛ͍ͬͯ͡ΈΑ͏ wυΩϡϝϯτΛಡΈͳ͕Β
    wJNBHJDLɿDPOWFSUFSJNBHFHPͰར༻
    wIUUQTHPEPDPSHHPQLHJOHPHSBQIJDTJNBHJDLWJNBHJDL
    wHJOɿNBJOHPͰར༻
    wIUUQTHPEPDPSHHJUIVCDPNHJOHPOJDHJO
49. ·ͱΊ w46;63*Ͱը૾ॲཧ͕Ͳ͏࢖ΘΕ͍ͯΔ͔Λ஌ͬͨ
    w*NBHF.BHJDLΛ࢖ͬͨ؆୯ͳը૾Ճ޻Λ΍ͬͯΈͨ
    wը૾Ճ޻αʔόΛ͍ͬͯ͡Έͨ
    w(Pݴޠʹ৮ΕͯΈͨ
50. ·ͱΊ wΰʔϧ͸ୡ੒Ͱ͖·͔ͨ͠ʁ
    w*NBHF.BHJDLΛ࢖༻ͨ͠ը૾Ճ޻Λ΍ͬͯΈͯɺ
    wը૾ॲཧͨͷͦ͠͏ʂͬͯͳΔ͜ͱ
51. ͜ΕͰ܅΋
    -(5.ը૾࡞Γ์୊ͩʂ