Inserting the past in video sequences

dc.contributor.author	Πέτσα, Έλλη	el
dc.contributor.author	Κουρουπής, Στέφανος	el
dc.contributor.author	Καρράς, Γιώργος	el
dc.date.accessioned	2015-01-28T12:21:56Z
dc.date.available	2015-01-28T12:21:56Z
dc.date.issued	2015-01-28
dc.identifier.uri	http://hdl.handle.net/11400/4930
dc.rights	Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/us/	*
dc.subject	Single image techniques
dc.subject	3D reconstruction
dc.subject	Panoramic image
dc.subject	Video sequence
dc.subject	Τεχνικές εικόνας
dc.subject	Τρισδιάστατη ανακατασκευή
dc.subject	Πανοραμική εικόνα
dc.title	Inserting the past in video sequences	en
heal.type	conferenceItem
heal.classification	Technology
heal.classification	Photogrammetry
heal.classification	Τεχνολογία
heal.classification	Φωτογραμμετρία
heal.classificationURI	http://id.loc.gov/authorities/subjects/sh85133147
heal.classificationURI	http://skos.um.es/unescothes/C02980
heal.classificationURI	N/A-Τεχνολογία
heal.classificationURI	N/A-Φωτογραμμετρία
heal.language	en
heal.access	free
heal.recordProvider	Τ.Ε.Ι. Αθήνας, Σχολή Τεχνολογικών Εφαρμογών, Τμήμα Μηχανικών Πληροφορικής και Μηχανικών Τοπογραφίας & Γεωπληροφορικής	el
heal.publicationDate	2001-09-18
heal.bibliographicCitation	Petsa E., Kouroupis, S. and Karras G. (2001). Inserting the past in video sequences. XVIII CIPA International Symposium, Potsdam, Germany, 18-22/09/2001, pp. 707-712. Available from: http://portal.survey.ntua.gr/main/labs/photo/staff/gkarras/Karras_Cipa_2001al.pdf	en
heal.abstract	There is currently a growing demand for photo-textured renderings in fields such as virtual tourism, architectural walk-throughs or archaeological reconstruction. Although this usually takes the form of “artificial” VRML views of modeled 3D scenes draped with image content, video sequences can also be augmented with the insertion of non-existing structures. While these are mostly structures planned to be built, this contribution addresses the question of demolished buildings. In a video sequence showing part of a central square of Athens one building, torn down long ago and replaced by a high hotel, is inserted. Its 3D model has been produced from an old single photograph using its vanishing points. The video itself has been produced in a simple way. First, a panoramic image has been generated by matching cocentric overlapping images. A photo-textured perspective view of the reconstructed building was then inserted into the panoramic image, parts of which were subsequently resampled to produce a frame sequence. This video sequence, combining real scene views with a virtually inserted building, imitates the movement of a stationary rotating camera. Our next step will be to produce a full sequence incorporating further demolished buildings of the square, for which old photographs are available.	en
heal.fullTextAvailability	true
heal.conferenceName	XVIII CIPA.International Symposium	en
heal.conferenceItemType	full paper