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掛川城の点群データをiTownsで表示しよう

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Avatar for Taro Matsuzawa aka. btm Taro Matsuzawa aka. btm
October 30, 2021
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 掛川城の点群データをiTownsで表示しよう

GIS学会2021 チュートリアル1

Avatar for Taro Matsuzawa aka. btm

Taro Matsuzawa aka. btm

October 30, 2021
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Transcript

  1. ֻ઒৓ͷ఺܈σʔλΛ iTownsͰදࣔ͠Α͏ Taro Matsuzawa (@smellman)

  2. ࣗݾ঺հ Georepublic Japan γχΞΤϯδχΞ / CISO ೔ຊUNIXϢʔβձձ௕/Ұൠࣾஂ๏ਓOSGeo೔ຊࢧ෦ཧࣄ/Ұൠࣾஂ๏ਓΦʔϓ ϯετϦʔτϚοϓϑΝ΢ϯσʔγϣϯδϟύϯϝϯόʔ ౦ژిػେֶOB/౦ژిػେֶCySecݱ໾ੜ breakcoreΫϥελ

    ૊௕ͱݺ͹Εͯ·͢

  3. ࠓճͷ໨త ੩ԬݝͷΦʔϓϯσʔλΛϓϩηογϯάͯ͠ϒϥ΢βʹදࣔ͢Δ͜ͱ ϓϩηογϯάͷखॱͱҾ͔͔ͬΔͱ͜ΖΛղઆ͠·͢ ݩωλ͸ࣗ෼ͷhatena blogͷҰهࣄͰ͢ هࣄҎ্ͷ࿩͸جຊతʹͰ͖·ͤΜ

  4. ࢖͏΋ͷ https://github.com/smellman/gis-society-2021-kakegawa εΫϦϓτͳͲ ֻ઒৓ͷ఺܈σʔλ ্هεΫϦϓτͰμ΢ϯϩʔυ͠·͢ Linux or macOS

  5. ԿΛ͢Δ͔(1) όϥόϥͷlasσʔλ lastool Ұͭͷlasσʔλ

  6. ԿΛ͢Δ͔(2) entwine-build.sh Ұͭͷlasσʔλ subset merge build Entwine 3DTiles

  7. ԿΛ͢Δ͔(3) ept-tool Entwine 3DTiles Cesium 3DTiles

  8. ௚઀Cesium 3DTilesʹͰ͖ͳ͍ͷ͔ https://gitlab.com/Oslandia/py3dtiles Py3dtilesͰ͸las͔Β௚઀3DTiles΁ม׵͸Ͱ͖Δ͕EPSG:2450ʹରԠ͠ ͍ͯͳ͍ ͍͓ͪ͏EPSGͷม׵ͷύον͸౤͕͛ͨɺ·ͩ͏·͘ػೳ͍ͯ͠ ͳ͍… ͳ͓ɺgithubͰ͸ͳ͘gitlabͳͷͰ஫ҙ

  9. ϓϩάϥϜͷ঺հ

  10. download.sh wgetίϚϯυͰҰׅμ΢ϯϩʔυ͢Δ͚ͩ

  11. smellman/lastools lastoolsΛೖΕͨdocker image pdalͰ΋mergeػೳ͕͋Δ͕ɺϝϞϦෆ଍ͰམͪΔΑ͏ͳͷͰlastools Λར༻ lastoolsࣗମ͸ݹ͍lasΛ؅ཧ͢ΔιϑτͰɺීஈ࢖͍͢ΔͳΒpdalͷํ͕ ͓קΊ

  12. entwine-build.sh / connormanning/ entwine entwineͷެࣜdocker image entwineܗࣜΛ࡞੒͢Δͷʹ࢖͏ buildίϚϯυͰsubsetΦϓγϣϯͰ64෼ׂͨ͠΋ͷΛ࠷ޙʹmergeί ϚϯυͰҰͭͷEntwine 3DTilesΛ࡞੒

  13. ept-tools(ΧελϜ൛) EPSG:2450 ʹରԠͤͨ͞ept-tools Proj4ͷఆٛΛ௥Ճ͚ͨͩ͠ ຊՈept-tools͕·࣮ͨ૷͕มΘͬͯ͠·ͬͨͷͰύονΛ౤͛Δ ͷ͕೉͘͠ͳ͍ͬͯΔ Entwine 3DTiles͔ΒCesium 3DTilesʹม׵͢Δͷʹར༻

  14. ͋ͱ͸ ద౰ʹखΛಈ͔͍ͯͩ͘͠͞ BuildΛ64෼ׂ͍ͯ͠ΔͷͰ΋͔͢͠ΔͱऴΘΒͳ͍Մೳੑ͸͋Γ· ͢ ผαʔό༻ҙͰ͖ΔͳΒparallel൛Λ࢖ͬͯΈ͍ͯͩ͘͞ ਵ࣭࣌໰Λड͚෇͚·͢