Consiglio Nazionale delle Ricerche

Tipo di prodottoArticolo in rivista
TitoloCan inpainting improve digital terrain analysis? Comparing techniques for void filling, surface reconstruction and geomorphometric analyses
Anno di pubblicazione2020
Formato
  • Elettronico
  • Cartaceo
Autore/iCrema, Stefano; Llena, Manel; Calsamiglia, Aleix; Estrany, Joan; Marchi, Lorenzo; Vericat, Damia; Cavalli, Marco
Affiliazioni autoriCNR IRPI; Univ Lleida; Univ Balearic Isl; Univ Balearic Isl; Forest Sci & Technol Ctr Catalonia
Autori CNR e affiliazioni
  • MARCO CAVALLI
  • STEFANO CREMA
  • LORENZO MARCHI
Lingua/e
  • inglese
AbstractThe investigation of form and processes in geomorphology and ecology is highly dependent on topographic data: a reliable digital terrain representation is in fact a key issue across environmental and earth sciences. In many cases, the processing of high-resolution topographic data (e.g., light detection and ranging (LiDAR), structure from motion) has to face issues such as void filling, vegetation/feature removal and interpolation accuracy that are usually related to (i) intrinsic limitations of the adopted technology, (ii) local conditions affecting the survey or (iii) specific design scenario. In this paper, we develop a methodology to test the accuracy of an image inpainting algorithm to fill data voids in complex mountain areas. The devised experiment exploits the availability of a high-resolution, LiDAR-derived digital terrain model and the inpainting approach accuracy is checked against some widely used interpolation techniques (natural neighbor, spline, inverse distance weighting, kriging). In order to better mimic the actual surface texture, a methodology to introduce local topographic variability to the interpolated surface is also presented. The results show a better performance of the inpainting algorithm especially in the case of complex and rugged topography. Two examples showing an effective usage and accuracy of the proposed technique are reported, highlighting the drawbacks that a poor surface representation can introduce. The whole procedure is made freely available within a Matlab (R) script with the addition of sample files. (c) 2019 John Wiley & Sons, Ltd. (c) 2020 John Wiley & Sons, Ltd.
Lingua abstractinglese
Altro abstract-
Lingua altro abstract-
Pagine da736
Pagine a755
Pagine totali20
RivistaEarth surface processes and landforms (Print)
Attiva dal 1981
Editore: Wiley, - New York
Paese di pubblicazione: Regno Unito
Lingua: inglese
ISSN: 0197-9337
Titolo chiave: Earth surface processes and landforms (Print)
Titolo proprio: Earth surface processes and landforms (Print)
Titolo abbreviato: Earth surf. processes landf. (Print)
Titolo alternativo: Earth surf. process. landforms (Print)
Numero volume della rivista45
Fascicolo della rivista3
DOI10.1002/esp.4739
Verificato da refereeSì: Internazionale
Stato della pubblicazionePublished version
Indicizzazione (in banche dati controllate)
  • ISI Web of Science (WOS) (Codice:000508609700001)
Parole chiaveimage inpainting, DTM, SfM, void filling, interpolation, geomorphometry
Link (URL, URI)-
Titolo parallelo-
Data di accettazione-
Note/Altre informazioni-
Strutture CNR
  • IRPI — Istituto di ricerca per la protezione idrogeologica
Moduli/Attività/Sottoprogetti CNR
  • DTA.AD003.027.001 : Geomorfometria e dinamiche del sedimento nei bacini montani
Progetti Europei-
Allegati