{"id":3203,"date":"2020-12-17T15:04:11","date_gmt":"2020-12-17T14:04:11","guid":{"rendered":"http:\/\/www.e-rihs.it\/?page_id=3203"},"modified":"2023-01-11T15:27:34","modified_gmt":"2023-01-11T14:27:34","slug":"multi-stereo-view-photogrammetry-terrestrial-and-aerial-through-uav-systems","status":"publish","type":"page","link":"https:\/\/www.e-rihs.it\/en\/multi-stereo-view-photogrammetry-terrestrial-and-aerial-through-uav-systems\/","title":{"rendered":"Multi stereo view photogrammetry (terrestrial and aerial through UAV systems)"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; _builder_version=&#8221;4.7.7&#8243; _module_preset=&#8221;default&#8221;][et_pb_row column_structure=&#8221;1_3,2_3&#8243; _builder_version=&#8221;4.7.7&#8243; _module_preset=&#8221;default&#8221;][et_pb_column type=&#8221;1_3&#8243; _builder_version=&#8221;4.7.7&#8243; _module_preset=&#8221;default&#8221;][et_pb_image src=&#8221;http:\/\/www.e-rihs.it\/wp-content\/uploads\/2023\/01\/Multi-stereo-view-photogrammetry.jpg&#8221; title_text=&#8221;Multi stereo view photogrammetry&#8221; _builder_version=&#8221;4.7.7&#8243; _module_preset=&#8221;default&#8221;][\/et_pb_image][\/et_pb_column][et_pb_column type=&#8221;2_3&#8243; _builder_version=&#8221;4.7.7&#8243; _module_preset=&#8221;default&#8221;][et_pb_text _builder_version=&#8221;4.7.7&#8243; _module_preset=&#8221;default&#8221;]<\/p>\n<p><strong>LABORATORIO: CNR ISPC<\/strong><\/p>\n<p><strong>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/strong><\/p>\n<p><strong>NOME STRUMENTO <\/strong><\/p>\n<p>SAPR ad 8 eliche che dotato di una gimbal radiocomandata in grado di montare qualsiasi strumento di ripresa fotografica o video fino ad un carico massimo di 5kg;\u00a0 Fotocamere Full-Frame dotate di varie ottiche fisse<\/p>\n<p>&nbsp;<\/p>\n<p><strong>INFORMAZIONI GENERALI<\/strong><\/p>\n<p>I laboratori del CNR-ISPC hanno un forte <em>know-how<\/em> in metodologie e tecniche di Rilievo che integrano soluzioni <em>image-based<\/em> e <em>range-based<\/em> finalizzate al rilevamento del patrimonio culturale, documentazione e visualizzazione scientifica. I laboratori sono dotati in particolare di strumentazione e sensori attivi e passivi per la digitalizzazione 2D e 3D di monumenti e siti archeologici. La strumentazione d\u2019istituto consiste principalmente in sistemi fotogrammetrici terrestri ed aerei (camere fotografiche ad alta risoluzione e diversi obiettivi, SAPR), sistemi a scansione laser (TOF e phase-based), sistemi topografici (GPS differenziale e stazione totale). Nel contesto di un progetto rilevamento 3D, il CNR ISPC pu\u00f2 offrire la propria collaborazione scientifica per la pianificazione, rilevamento, elaborazione, interpretazione e visualizzazione dei dati rilevati.<br \/> Il CNR ISPC \u00e8 in grado di eseguire operazioni di rilevamento sia terrestre che aereo grazie all\u2019uso di Sistemi a Pilotaggio Remoto (SAPR), pi\u00f9 comunemente noti come droni.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>DETTAGLI TECNICI<\/strong><\/p>\n<p>La Fotogrammetria \u00e8 la scienza che si occupa di estrarre informazioni metriche dalle fotografie. Recentemente grazie all\u2019innovazione tecnologica e l\u2019uso della Computer Vision, sono state sviluppate tecniche fotogrammetriche automatizzate che permettono di elaborare un modello tridimensionale, partendo da un campionamento molto denso di immagini bidimensionali, servendosi di procedimenti automatizzati. Il CNR-ISPC \u00e8 in grado di elaborare modelli tridimensionali utilizzando diverse tecniche:<\/p>\n<p>\u25cf\u00a0\u00a0\u00a0\u00a0\u00a0 <em>Multi stereo view reconstruction<\/em>: si tratta di una tecnica fotogrammetrica di elaborazione automatica. Oltre ai tradizionali principi fotogrammetrici di collinearit\u00e0, raggi proiettivi e calibrazione della camera, questa tecnica utilizza anche algoritmi della<em> structure from motion<\/em> e <em>dense stereo reconstruction<\/em> che permettono di analizzare e correlare le fotografie automaticamente in fase di processing ed estrarre una nuvola di punti. Da questa \u00e8 infine possibile realizzare elaborati di vario tipo come modelli tridimensionali con applicazione del colore, ortofoto, mappe geografiche e modelli di elevazione digitale (DEM). Tale tecnica necessita in fase di acquisizione del supporto di sistemi topografici dai cui dipender\u00e0 l\u2019accuratezza metrica del risultato.<\/p>\n<p>\u25cf\u00a0\u00a0\u00a0\u00a0\u00a0 <em>Fotogrammetria sferica<\/em>: Grazie alle evoluzioni delle tecniche di rilievo ed in particolare della fotogrammetria sferica \u00e8 oggi possibile utilizzare immagini o foto panoramiche (proiezioni sferiche fino a 360\u00b0) non solo per la classica navigazione VR monoscopica (tipo QTVR) ma \u00e8 possibile georeferenziare le immagini, estrarre geometrie 3D della scena e soprattutto proiettare textures ad alta risoluzione sulle superfici del modello. La tecnica garantisce precisioni elevate e completezza del dato con un processo di acquisizione veloce ed economico. E&#8217; possibile integrare i risultati con dati provenienti da altre tecniche di rilievo come la scansione laser. La fotogrammetria sferica ben si adatta al supporto di processi per la creazione di contenuti immersivi ed alla fruizione degli stessi all&#8217;interno di sistemi di navigazione interattiva con dispositivi immersivi HMD (<em>Head Mounted Display<\/em>). Un esempio di sistema evoluto di fruizione immersiva \u00e8 la DPF (<em>Depth Panoramic Frame<\/em>), una tecnologia che permette una visione stereoscopica della scena ricostruita attraverso la trasmissione al dispositivo di sole due immagini &#8211; o video &#8211; con proiezione sferica, una con le informazioni colore (diffuse map) ed una con informazioni di profondit\u00e0 (depth map).<\/p>\n<p>&nbsp;<\/p>\n<p><span>Referenti:<br \/> Daniele Ferdani <a href=\"daniele.ferdani@cnr.it\">daniele.ferdani@cnr.it<\/a><br \/> <\/span><span>Andrea Angelini <a href=\"andrea.angelini@cnr.it\">andrea.angelini@cnr.it<\/a><\/span><\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/www.e-rihs.it\/wp-content\/uploads\/2022\/02\/MOLAB_EQUIPMENT_Multi-stereo-view-photogrammetry_ita.pdf\" rel=\"attachment wp-att-4895\">Scarica la scheda completa<\/a><\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>LABORATORIO: CNR ISPC \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 NOME STRUMENTO SAPR ad 8 eliche che dotato di una gimbal radiocomandata in grado di montare [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-3203","page","type-page","status-publish"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Multi stereo view photogrammetry 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