Digital surface development of large cylindrical and conical structures with a single-image technique

Theodoropoulou, I; Petsa, E; Karras, GE

dc.contributor.author	Theodoropoulou, I	en
dc.contributor.author	Petsa, E	en
dc.contributor.author	Karras, GE	en
dc.date.accessioned	2014-03-01T01:16:25Z
dc.date.available	2014-03-01T01:16:25Z
dc.date.issued	2001	en
dc.identifier.issn	0031-868X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14038
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0035188722&partnerID=40&md5=95f111dbb9ca8c45b662d9d5cb624670	en
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0035188722&partnerID=40&md5=95f111dbb9ca8c45b662d9d5cb624670	en
dc.subject	Architectural photogrammetry	en
dc.subject	Cylindrical and conical structures	en
dc.subject	Digital photogrammetry	en
dc.subject	Non-metric cameras	en
dc.subject	Single-image techniques	en
dc.subject	Surface development	en
dc.subject.classification	Geography, Physical	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.classification	Remote Sensing	en
dc.subject.classification	Imaging Science & Photographic Technology	en
dc.subject.other	building	en
dc.subject.other	digital photogrammetry	en
dc.subject.other	imaging method	en
dc.subject.other	raster	en
dc.subject.other	Greece	en
dc.title	Digital surface development of large cylindrical and conical structures with a single-image technique	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	Normally, regular surfaces of architectural or archaelogical interest can be accurately mapped with single-image techniques. Whenever possible, such surfaces are developed digitally, or they are presented as suitable cartographic projections. This paper describes the raster development of two large towers, one conical and one cylindrical, with heights of 19 m and 12 m, and diameters of approximately 10 m and 8 m, respectively. The towers, dating from circa 300 BC, are situated on Greek islands and are accessible only on foot. The first tower was imaged from its surrounding hills with several lenses, including powerful telephoto lenses. The other tower was recorded from up to 9 m above ground level by means of a modified fishing rod carrying a lightweight 35 mm camera. All the non-metric photographs, taken at a negative scale of approximately 1:350 which allowed an overall accuracy of 3 cm to 4 cm to be achieved, were developed digitally and then mosaicked. The raster products are described and discussed.	en
heal.publisher	PHOTOGRAMMETRIC SOC, UNIV COLL LONDON	en
heal.journalName	Photogrammetric Record	en
dc.identifier.isi	ISI:000167971800003	en
dc.identifier.volume	17	en
dc.identifier.issue	97	en
dc.identifier.spage	25	en
dc.identifier.epage	37	en