A NEW PHOTOGRAMMETRIC LAYOUT OF CAMERA STATIONS: A CASE STUDY

Risultato della ricerca: Conference contribution

Abstract

This paper describes an easy and low cost photogrammetric method to determine the height of a point in relation to a reference plane. Such a method consists of an innovative geometric layout of the camera stations and specific algorithms. It is applicable to architectural surveying, in particular when the surface to be surveyed present a definitive geometry, with clearly identifiable defined points. The effectiveness of this method was verified through a case study carried out with the use of a digital camera and three dimensional targets. Two different pairs of images were obtained. One pair consists of images taken with a 35 mm and 19 mm focal length; the other one consists of images taken with a focal length of 35 mm and 28 mm. The accuracy obtained, calculated as RMS and errors on the points, is equivalent to 2,6 cm with a maximum error of 4.9 cm, for the configuration 35 -19 mm; equal to 3,4 cm, with a maximum error of 6,1 cm, for the configuration 35 - 28 mm. The advantages and disadvantages of the above method are then discusses.The system is Patent registered.
Lingua originaleEnglish
Titolo della pubblicazione ospiteXXV INTERNATIONAL SYMPOSIUM ON MODERN TECHNOLOGIES, EDUCATION AND PROFESSIONAL PRACTICE IN GEODESY AND RELATED FIELDS
Numero di pagine7
Stato di pubblicazionePublished - 2015

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