Modellazione digitale 3D: input (POK)

Offered by Politecnico di Milano,
Modellazione digitale 3D: input (POK)

Importare, georeferenziare e gestire, in ambiente CAD, database cartografici e fotogrammetrici. Il programma, di carattere prettamente operativo, si propone di fornire indicazioni pratiche per l’acquisizione e la gestione di cartografia da geoportale, per l’acquisizione e la gestione di dati metrico spaziali acquisiti tramite scansione 3D in ambiente reale, e per la georeferenziazione e integrazione delle informazioni in ambiente CAD.

Il corso è composto da due week:
Week 1 – L’input da basi cartografiche
Week 2 – L’input da scansione 3D

La week 1 è articolata in tre lezioni. Nella prima lezione vedremo come “Gestire e condividere basi cartografiche vettoriali geo-referenziate in ambiente GIS e CAD”, in particolare mostreremo come importare e integrare cartografia vettoriale GIS in ambiente CAD, e come esportare modelli CAD verso l’ambiente GIS; ci soffermeremo anche sull’organizzazione di mappe e informazioni nei database cartografici, con alcuni cenni sui sistemi di proiezione e di riferimento, e sulla georeferenziazione e gestione del formato dei file di interscambio.
Nella seconda lezione mostreremo come “Importare e gestire file cartografici ‘raster’ in ambiente GIS”; vedremo in particolare come inserire in ambiente GIS mappe raster georeferenziate, e come georeferenziare mappe raster non georeferenziate; ci occuperemo anche del controllo dei parametri di conversione, della scalatura e dell’orientamento delle carte, nonché del collegamento e dell’archiviazione dei file importati.
Nella terza lezione vedremo come “Importare e gestire file cartografici ‘vettoriali’ in ambiente CAD”, soffermandoci più in generale sul tema dell’interoperabilità fra ambienti software, e sull’implementazione di basi modellistiche integrate, con particolare riferimento al potenziale informativo e semantico derivante dalla convergenza delle tecnologie CAD, GIS e BIM, ulteriormente potenziabile con l’impiego di plugin parametrici e motori di gaming.
La week 2 si compone di due lezioni. Nella prima, intitolata “Importare e visualizzare in ambiente CAD dati metrico spaziali provenienti da scansioni 3D”, si affronta il tema dell’importazione e gestione, in ambiente CAD, di nuvole di punti, mesh e texture generate mediante software fotogrammetrico a partire da riprese fotografiche o scansioni laser, con particolare riferimento al controllo dei formati di interscambio, alla corretta riduzione in scala dei database 3D, ai limiti e alle possibilità di editing dei file origine.
La seconda lezione, dal titolo “Integrare in ambiente CAD e georeferenziare dati metrico spaziali provenienti da scansioni 3D” è dedicata al montaggio e alla georeferenziazione di database fotogrammetrici 3D in ambiente CAD, rispetto a selezionati punti di riferimento presenti su basi cartografiche georeferenziate precedentemente importate da ambiente GIS, con l’indicazione delle principali fasi e peculiarità interpretative che caratterizzano il processo di integrazione dei file in un modello coerente.

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