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dc.contributor.authorallPesci, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italiaen
dc.contributor.authorallTeza, G.; Università di Padova Dipartimento Geoscienze, Padova, Italiaen
dc.description.abstractThe results of an experiment carried out with the aim to investigate the role of surface irregularities on the intensity data provided by a terrestrial laser scanner (TLS) survey are reported here. Depending on surface roughness, the interaction between an electromagnetic wave and microscopic irregularities leads to a Lambertian-like diffusive light reflection, allowing the TLS to receive the backscattered component of the signal. The described experiment consists in a series of TLS-based acquisitions of a rotating artificial target specifically conceived in order to highlight the effects on the intensity data due to surface irregularity. This target is articulated in a flat plate and in an irregular surface, whose macro-roughness has a characteristic length with the same order of the spot size. Results point out the different behavior of the plates. The intensity of the signal backscattered by the planar element decreases if the incidence angle increases, whereas the intensity of the signal backscattered by the irregular surface is almost constant if the incidence angle varies. Since the typical surfaces acquired in a geological/geophysical survey are generally irregular, these results imply that the intensity data can be easily used in order to evaluate the reflectance of the material at the considered wavelength, e.g. for pattern recognition purposes.en
dc.publisher.nameEditrice Compositorien
dc.relation.ispartofAnnals of Geophysicsen
dc.relation.ispartofseries5-6/51 (2008)en
dc.subjectTerrestrial Laser Scanneren
dc.subjectIncidence Angleen
dc.subjectIrregular surfacesen
dc.subjectData Acquisition and Processingen
dc.titleEffects of surface irregularities on intensity data from laser scanning: an experimental approach.en
dc.subject.INGV04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoringen
dc.description.obiettivoSpecifico1.3. TTC - Sorveglianza geodetica delle aree vulcaniche attiveen
dc.description.journalTypeJCR Journalen
dc.contributor.authorPesci, A.en
dc.contributor.authorTeza, G.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italiaen
dc.contributor.departmentUniversità di Padova Dipartimento Geoscienze, Padova, Italiaen
item.fulltextWith Fulltext-
item.grantfulltextopen- Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia- di Geoscienze - Univ. di Padova- Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
Appears in Collections:Annals of Geophysics
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