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A combined single range and single image device for low-cost measurement of building façade features

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Abstract

The dimensions of building façades and window apertures are usually determined by making direct measurements using tapes and plummets. This approach, however, has a number of drawbacks including the physical risk to which the persons making the measurements are exposed. This paper proposes an indirect approach based on close range photogrammetry that is inexpensive, simple, fast and safe, and which does not require specialist staff or direct ground control measurements. The method is based on taking a picture using a digital camera and measuring the distance to the object using a handheld laser distance meter. Both items of equipment are mounted on a specially designed support that allows the laser distance meter to move independently of the camera.
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Keywords: building façade; close range photogrammetry; digital camera; laser distance meter; window aperture measurement

Document Type: Research Article

Affiliations: 1: ( ), Email: cgalan@uvigo.es 2: ( ) University of Vigo, Spain, Email: parias@uvigo.es 3: ( ) University of Valencia, Spain, Email: jherraez@cgf.upv.es 4: ( ), Email: jairodpe@lugo.usc.es 5: ( ) University of Santiago de Compostela, Spain, Email: mmartin@lugo.usc.es

Publication date: 2008-06-01

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