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Auteur R. Briggs |
Documents disponibles écrits par cet auteur (3)



An automated system for image-to-vector georeferencing / Y. Li in Cartography and Geographic Information Science, vol 39 n° 4 (October 2012)
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Titre : An automated system for image-to-vector georeferencing Type de document : Article/Communication Auteurs : Y. Li, Auteur ; R. Briggs, Auteur Année de publication : 2012 Article en page(s) : pp 199 - 217 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] algorithme ICP
[Termes IGN] appariement d'images
[Termes IGN] carrefour
[Termes IGN] Dallas (Texas)
[Termes IGN] données vectorielles
[Termes IGN] extraction automatique
[Termes IGN] extraction de traits caractéristiques
[Termes IGN] géoréférencement indirect
[Termes IGN] image aérienne
[Termes IGN] image satellite
[Termes IGN] intersection spatialeRésumé : (Auteur) Although modern imagery usually has latitude and longitude or similar coordinates to provide true world location, much potentially useful imagery lacks this information. This includes historical imagery, as well as modern imagery that may have lost its locational information through inappropriate processing. Its provision through the process of georeferencing is still primarily a manual procedure. This paper proposes an efficient, fully- automated solution for massively asymmetric image-to-vector georeferencing whereby an image of a relatively small geographic area is automatically located relative to a substantially larger vector map base. For control points, road intersections are automatically extracted from high resolution aerial or satellite imagery using the new concepts of reference circles and central pixels. For automated control point pair identification between image and vector map, an invariant point pattern matching approach is proposed based on shape invariance for similarity transforms and invariant area ratios for affine transforms. The matching algorithm necessitates only a small subset of image points and requires no additional information beyond pixel and map coordinates. Further, it tolerates inaccurate, missing and spurious points, and provides high performance with linear scalability. A final step performs transformation verification, globalization and optimization based upon an Iterative Closest Point Greedy algorithm. Experimentation shows that images covering a few city blocks with as few as 6 to 17 extracted road intersection points can be efficiently and correctly located using the road network of Dallas County, Texas, with over 80,000 intersections. Numéro de notice : A2012-575 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1559/152304063941199 En ligne : https://doi.org/10.1559/152304063941199 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32021
in Cartography and Geographic Information Science > vol 39 n° 4 (October 2012) . - pp 199 - 217[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 032-2012041 RAB Revue Centre de documentation En réserve L003 Disponible Modeling urban population growth from remotely sensed imagery and TIGER GIS road data / F. Qiu in Photogrammetric Engineering & Remote Sensing, PERS, vol 69 n° 9 (September 2003)
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Titre : Modeling urban population growth from remotely sensed imagery and TIGER GIS road data Type de document : Article/Communication Auteurs : F. Qiu, Auteur ; K.L. Woller, Auteur ; R. Briggs, Auteur Année de publication : 2003 Article en page(s) : pp 1031 - 1042 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] analyse diachronique
[Termes IGN] croissance urbaine
[Termes IGN] démographie
[Termes IGN] détection de changement
[Termes IGN] image Landsat-ETM+
[Termes IGN] image Landsat-TM
[Termes IGN] modèle mathématique
[Termes IGN] population urbaine
[Termes IGN] recensement démographique
[Termes IGN] réseau routier
[Termes IGN] Texas (Etats-Unis)Résumé : (Auteur) We modeled population growth from 1990 to 2000 in the north Dallas-Fort Worth Metroplex using two different methods: a conventional model based on remote sensing land-use change detection, and a newly devised approach using GIS-derived road development measurements. These methods were applied at both city and census-tract levels and were evaluated against the actual population growth. It was found that accurate population growth estimates are achieved by both methods. At the census-tract level, our models yielded a comparable result with that obtained from a more complex commercial demographics model. At both city and census-tract levels, models using road development were better than those using land-use change detection. In addition to being efficient in cost and time, our models provide direct visualization of the distribution of the actual population growth within cities and census tracts when compared to commercial demographic models. Numéro de notice : A2003-233 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.69.9.1031 En ligne : https://doi.org/10.14358/PERS.69.9.1031 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22528
in Photogrammetric Engineering & Remote Sensing, PERS > vol 69 n° 9 (September 2003) . - pp 1031 - 1042[article]
[article]
Titre : Change detection in digital orthoimages Type de document : Article/Communication Auteurs : J.C. Stamm, Auteur ; R. Briggs, Auteur Année de publication : 1999 Article en page(s) : pp 44 - 47 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Orthophotographie, orthoimage
[Termes IGN] détection de changement
[Termes IGN] image panchromatique
[Termes IGN] orthoimageRésumé : (Auteur) Orthophotos are commonly used for periodical updating of GIS databases. We investigated automated change detection techniques to improve the efficiency of updating. Our approach augments standard methods of change detection for panchromatic imagery with raster to vector polygon conversion of change regions and statistical pixel analysis of regions using polygon masking. Experiments with small areas indicate a high degree of success. Numéro de notice : A1999-160 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26358
in GIM international > vol 13 n° 4 (May 1999) . - pp 44 - 47[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 061-99041 RAB Revue Centre de documentation En réserve L003 Disponible