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Revising cadastral data on land boundaries using deep learning in image-based mapping / Bujar Fetai in ISPRS International journal of geo-information, vol 11 n° 5 (May 2022)  

Public [article]  inISPRS International journal of geo-information > vol 11 n° 5 (May 2022) . - n° 298 Titre : Revising cadastral data on land boundaries using deep learning in image-based mapping Type de document : Article/Communication Auteurs : Bujar Fetai, Auteur ; Dejan Grigillo, Auteur ; Anka Lisec, Auteur Année de publication : 2022 Article en page(s) : n° 298 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] apprentissage profond [Termes IGN] cadastre étranger [Termes IGN] cartographie cadastrale [Termes IGN] classification par réseau neuronal convolutif [Termes IGN] détection de contours [Termes IGN] données cadastrales [Termes IGN] limite cadastrale [Termes IGN] point d'appui [Termes IGN] Slovénie Résumé : (auteur) One of the main concerns of land administration in developed countries is to keep the cadastral system up to date. The goal of this research was to develop an approach to detect visible land boundaries and revise existing cadastral data using deep learning. The convolutional neural network (CNN), based on a modified architecture, was trained using the Berkeley segmentation data set 500 (BSDS500) available online. This dataset is known for edge and boundary detection. The model was tested in two rural areas in Slovenia. The results were evaluated using recall, precision, and the F1 score—as a more appropriate method for unbalanced classes. In terms of detection quality, balanced recall and precision resulted in F1 scores of 0.60 and 0.54 for Ponova vas and Odranci, respectively. With lower recall (completeness), the model was able to predict the boundaries with a precision (correctness) of 0.71 and 0.61. When the cadastral data were revised, the low values were interpreted to mean that the lower the recall, the greater the need to update the existing cadastral data. In the case of Ponova vas, the recall value was less than 0.1, which means that the boundaries did not overlap. In Odranci, 21% of the predicted and cadastral boundaries overlapped. Since the direction of the lines was not a problem, the low recall value (0.21) was mainly due to overly fragmented plots. Overall, the automatic methods are faster (once the model is trained) but less accurate than the manual methods. For a rapid revision of existing cadastral boundaries, an automatic approach is certainly desirable for many national mapping and cadastral agencies, especially in developed countries. Numéro de notice : A2022-357 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.3390/ijgi11050298 Date de publication en ligne : 04/05/2022 En ligne : https://doi.org/10.3390/ijgi11050298 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=100562 [article]

The legal boundary cadastre in Austria: a success story? / Julius Ernst in Geodetski vestnik, vol 63 n° 2 (June - August 2019)  

Public [article]  inGeodetski vestnik > vol 63 n° 2 (June - August 2019) . - pp 234 - 249 Titre : The legal boundary cadastre in Austria: a success story? Type de document : Article/Communication Auteurs : Julius Ernst, Auteur ; Reinfried Mansberger, Auteur ; Gerhardt Muggenhuber, Auteur ; Gerhard Navratil, Auteur ; Stefan Ozlberger, Auteur ; Christoph Twaroch, Auteur Année de publication : 2019 Article en page(s) : pp 234 - 249 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cadastre étranger [Termes IGN] Autriche [Termes IGN] base de données foncières [Termes IGN] cadastre étranger [Termes IGN] limite cadastrale [Termes IGN] parcelle cadastrale [Termes IGN] propriété foncière Résumé : (auteur) n 2019, the Austrian surveyors will celebrate the 50 years anniversary of the enactment of the Austrian Surveying Act. The date of the enactment of this law was also the hour of birth for the Austrian Legal Boundary Cadastre (germ. der Grenzkataster) and with it a milestone to ensure the legal security of parcel boundaries. The jubilee is taken as the occasion to introduce the development, implementation and running of the Legal Boundary Cadastre to a wider scientific community. After a short history of the Austrian Cadastre, the process of its transition from the Fiscal Cadastre to the Legal Boundary Cadastre is documented in the article. The current situation with strengths and weaknesses of the system is outlined and scheduled developments are introduced. Numéro de notice : A2019-404 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.15292/geodetski-vestnik.2019.02.234-249 En ligne : http://dx.doi.org/10.15292/geodetski-vestnik.2019.02.234-249 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=93507 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
139-2019021	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Method for an automatic alignment of imagery and vector data applied to cadastral information in Poland / Juan J. Ruiz-Lendínez in Survey review, vol 51 n° 365 (March 2019)  

Public [article]  inSurvey review > vol 51 n° 365 (March 2019) . - pp 123 - 134 Titre : Method for an automatic alignment of imagery and vector data applied to cadastral information in Poland Type de document : Article/Communication Auteurs : Juan J. Ruiz-Lendínez, Auteur ; B. Maćkiewicz, Auteur ; P. Motek, Auteur ; T. Stryjakiewicz, Auteur Année de publication : 2019 Article en page(s) : pp 123 - 134 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées [Termes IGN] carrefour [Termes IGN] conflation [Termes IGN] données cadastrales [Termes IGN] données vectorielles [Termes IGN] incertitude géométrique [Termes IGN] limite cadastrale [Termes IGN] orthoimage [Termes IGN] Pologne [Termes IGN] segmentation d'image [Termes IGN] texture d'image Résumé : (Auteur) Nowadays, an important problem in combining vector data and imagery is that they rarely align. This problem can become particularly acute in the case of cadastral systems. In this study, and as part of the partnership between the Universities of Jaén and Adam Mickiewicz (Poznań), we provide a methodological proposal to assess the conflation procedures between cadastral vector data and imagery, improving the alignment between both data sets. To do this, we use an automatic alignment algorithm which detects road intersections from both data sets as control points by using image texture characterisation. With this method, we first train the system on the imagery to learn the road texture distribution, then we can obtain its segmentation according to its texture, and finally the system locates road intersection points. The last step is to align vector data and imagery by using different techniques. This algorithm is based on an earlier one, detailed in [Ruiz, J.J., Rubio, T.J., and Ureña, M.A., 2011b. Automatic extraction of road intersections from images in conflation processes based on texture characterization. Survey review, 43 (321), 212–225.]. However, in the updated version we have solved the problem of not-well-defined intersection points, resulting in a substantial increase in the number of intersection points employed for the final adjustment to align both products and in a reduction of the computation time. On the other hand, the positional uncertainty assessment of parcel boundary lines both before and after applying our alignment procedure between them is provided. With regard to the experimental results, in the case of Polish cadastral data this procedure allows for significant improvement in the alignment between imagery and cadastral parcels boundaries. Numéro de notice : A2019-189 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/00396265.2017.1388959 Date de publication en ligne : 20/10/2017 En ligne : https://doi.org/10.1080/00396265.2017.1388959 Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=92626 [article]

How users perceive transparency in the 3D visualization of cadastre : testing its usability in an online questionnaire / Chen Wang in Geoinformatica, vol 21 n° 3 (July - September 2017)  

Public [article]  inGeoinformatica > vol 21 n° 3 (July - September 2017) . - pp 599 - 618 Titre : How users perceive transparency in the 3D visualization of cadastre : testing its usability in an online questionnaire Type de document : Article/Communication Auteurs : Chen Wang, Auteur ; Jacynthe Pouliot, Auteur ; Frédéric Hubert, Auteur Année de publication : 2017 Article en page(s) : pp 599 - 618 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] cadastre [Termes IGN] cadastre 3D [Termes IGN] convivialité [Termes IGN] limite administrative [Termes IGN] limite cadastrale [Termes IGN] parcelle cadastrale [Termes IGN] propriété foncière [Termes IGN] questionnaire [Termes IGN] visualisation 3D [Vedettes matières IGN] Géovisualisation Résumé : (Auteur) Using transparency as a visual variable in 3D geo-visualization offers several advantages since it can encode underlying data and at the same time relieve the occlusion. However, the usability of transparency has yet to be tested with intended users and it might vary from one application domain to another or from one task to another. This research project addresses the usability of transparency in 3D cadastre visualization, more specifically whether it helps users delimit property units (administrative boundaries) with their physical counterparts (e.g., walls) in condominium situation. In this situation, three types of boundaries (simple physical, simple administrative, and linked boundary, which is both physical and administrative) are involved in visualization, and three different transparency levels are used to represent these types. Empirical tests are administered in the form of an online questionnaire for university students in law (notarial law) and land surveying. The results show that, in general, using three different transparency levels is preferable and efficient solution to help users demarcate property units with their physical counterparts, and 63% participants correctly achieved their visual tasks with this design. Also, the transparency settings influence user’s performance. For example, applying very high transparency to simple administrative boundaries as compared to simple physical boundaries improves user certainty. Another important discovery is that many university students in notarial law are inexperienced with 3D visualization, and such inexperience affects the viewer’s certitude when carrying out visual tasks. Numéro de notice : A2017-383 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1007/s10707-016-0281-y En ligne : https://doi.org/10.1007/s10707-016-0281-y Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=85814 [article]

Un cadastre pas comme les autres / Anne Fantuzzi in Géomètre, n° 2142 (décembre 2016)

Public [article]  inGéomètre > n° 2142 (décembre 2016) . - pp 14 - 16 Titre : Un cadastre pas comme les autres Type de document : Article/Communication Auteurs : Anne Fantuzzi, Auteur Année de publication : 2016 Article en page(s) : pp 14 - 16 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Cadastre [Termes IGN] Alsace (France administrative) [Termes IGN] analyse comparative [Termes IGN] bornage [Termes IGN] cadastre étranger [Termes IGN] cadastre européen [Termes IGN] droit foncier [Termes IGN] limite cadastrale [Termes IGN] Moselle (57) Résumé : (auteur) Devant une centaine de personnes - élus locaux, parlementaires, administrations, étudiants, géomètres-experts - les spécificités de la publicité foncière en Alsace-Moselle ont été mises en relief et comparées avec les régimes de publicité foncière à travers l’Europe. Numéro de notice : A2016-951 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83451 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
063-2016111	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Recovery of cadastral boundaries with GNSS equipment / A. Cina in Survey review, vol 48 n° 350 (September 2016)  

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Towards automated detection of visual cadastral boundaries / Yismaw Wassie in GIM international, vol 30 n° 8 (August 2016)

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The Austrian land cadastre: from the earliest beginnings to the modern land information system / Anka Lisec in Geodetski vestnik, vol 58 n° 3 ([01/09/2014])  

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Using a geographic information system to resolve a riparian boundary / Josephina Campbell in SaLIS Surveying and land information science, vol 72 n° 4 (December 2012)

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Fitted, green, and volunteered: Legal and survey complexities of future boundary systems / R. Benett in Geomatica, vol 66 n° 3 (September 2012)  

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Du conflit au préventif / Anonyme in Géomètre, n° 2084 (septembre 2011)

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Procès-verbal : un véritable acte foncier / S. Devouge in Géomètre, n° 2084 (septembre 2011)

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Cadastral Survey, bureau of land management report on recent activities / D. Buhler in SaLIS Surveying and land information science, vol 69 n° 4 (Winter 2009)

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Boundary dimensions as basis: managing a cadastral SDI framework / M. Elfick in GIM international, vol 19 n° 8 (August 2005)

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The value of cadastral surveying to efficient land administration / G. Jeffress in Surveying and land information science, vol 63 n° 4 (01/12/2003)

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