Please use this identifier to cite or link to this item: http://hdl.handle.net/11400/4930
Title: Inserting the past in video sequences
Authors: Πέτσα, Έλλη
Κουρουπής, Στέφανος
Καρράς, Γιώργος
Item type: Conference publication
Conference Item Type: Full Paper
Keywords: Single image techniques;3D reconstruction;Panoramic image;Video sequence;Τεχνικές εικόνας;Τρισδιάστατη ανακατασκευή;Πανοραμική εικόνα
Subjects: Technology
Photogrammetry
Τεχνολογία
Φωτογραμμετρία
Issue Date: 28-Jan-2015
18-Sep-2001
Date of availability: 28-Jan-2015
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.
Language: English
Citation: 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
Conference: XVIII CIPA.International Symposium
Access scheme: Publicly accessible
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
URI: http://hdl.handle.net/11400/4930
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