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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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Taro Matsuzawa aka. btm
October 30, 2021
Technology
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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
Taro Matsuzawa aka. btm
October 30, 2021
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Transcript
ֻͷ܈σʔλΛ iTownsͰදࣔ͠Α͏ Taro Matsuzawa (@smellman)
ࣗݾհ Georepublic Japan γχΞΤϯδχΞ / CISO ຊUNIXϢʔβձձ/Ұൠࣾஂ๏ਓOSGeoຊࢧ෦ཧࣄ/Ұൠࣾஂ๏ਓΦʔϓ ϯετϦʔτϚοϓϑΝϯσʔγϣϯδϟύϯϝϯόʔ ౦ژిػେֶOB/౦ژిػେֶCySecݱੜ breakcoreΫϥελ
ͱݺΕͯ·͢
ࠓճͷత ੩ԬݝͷΦʔϓϯσʔλΛϓϩηογϯάͯ͠ϒϥβʹදࣔ͢Δ͜ͱ ϓϩηογϯάͷखॱͱҾ͔͔ͬΔͱ͜ΖΛղઆ͠·͢ ݩωλࣗͷhatena blogͷҰهࣄͰ͢ هࣄҎ্ͷجຊతʹͰ͖·ͤΜ
͏ͷ https://github.com/smellman/gis-society-2021-kakegawa εΫϦϓτͳͲ ֻͷ܈σʔλ ্هεΫϦϓτͰμϯϩʔυ͠·͢ Linux or macOS
ԿΛ͢Δ͔(1) όϥόϥͷlasσʔλ lastool Ұͭͷlasσʔλ
ԿΛ͢Δ͔(2) entwine-build.sh Ұͭͷlasσʔλ subset merge build Entwine 3DTiles
ԿΛ͢Δ͔(3) ept-tool Entwine 3DTiles Cesium 3DTiles
Cesium 3DTilesʹͰ͖ͳ͍ͷ͔ https://gitlab.com/Oslandia/py3dtiles Py3dtilesͰlas͔Β3DTilesมͰ͖Δ͕EPSG:2450ʹରԠ͠ ͍ͯͳ͍ ͍͓ͪ͏EPSGͷมͷύον͕͛ͨɺ·ͩ͏·͘ػೳ͍ͯ͠ ͳ͍… ͳ͓ɺgithubͰͳ͘gitlabͳͷͰҙ
ϓϩάϥϜͷհ
download.sh wgetίϚϯυͰҰׅμϯϩʔυ͢Δ͚ͩ
smellman/lastools lastoolsΛೖΕͨdocker image pdalͰmergeػೳ͕͋Δ͕ɺϝϞϦෆͰམͪΔΑ͏ͳͷͰlastools Λར༻ lastoolsࣗମݹ͍lasΛཧ͢ΔιϑτͰɺීஈ͍͢ΔͳΒpdalͷํ͕ ͓קΊ
entwine-build.sh / connormanning/ entwine entwineͷެࣜdocker image entwineܗࣜΛ࡞͢Δͷʹ͏ buildίϚϯυͰsubsetΦϓγϣϯͰ64ׂͨ͠ͷΛ࠷ޙʹmergeί ϚϯυͰҰͭͷEntwine 3DTilesΛ࡞
ept-tools(ΧελϜ൛) EPSG:2450 ʹରԠͤͨ͞ept-tools Proj4ͷఆٛΛՃ͚ͨͩ͠ ຊՈept-tools͕·࣮͕ͨมΘͬͯ͠·ͬͨͷͰύονΛ͛Δ ͷ͕͘͠ͳ͍ͬͯΔ Entwine 3DTiles͔ΒCesium 3DTilesʹม͢Δͷʹར༻
͋ͱ దʹखΛಈ͔͍ͯͩ͘͠͞ BuildΛ64ׂ͍ͯ͠ΔͷͰ͔͢͠ΔͱऴΘΒͳ͍Մೳੑ͋Γ· ͢ ผαʔό༻ҙͰ͖ΔͳΒparallel൛ΛͬͯΈ͍ͯͩ͘͞ ਵ࣭࣌Λड͚͚·͢