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Laser scanner in a backpack / Antero Kukko in GIM international, vol 30 n° 1 (January 2016)

Public [article]  inGIM international > vol 30 n° 1 (January 2016) . - pp 16 - 19 Titre : Laser scanner in a backpack Type de document : Article/Communication Auteurs : Antero Kukko, Auteur ; Harri Kaartinen, Auteur ; Juho-Pekka Virtanen, Auteur Année de publication : 2016 Article en page(s) : pp 16 - 19 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes IGN] accessibilité [Termes IGN] données lidar [Termes IGN] télémètre laser terrestre [Termes IGN] télémétrie laser mobile Résumé : (éditeur) Laser scanning systems have gone through a major evolution in the past decade. After the initial breakthrough of airborne laser scanners (ALS), other types of laser scanning systems have emerged, most notably terrestrial laser scanners (TLS) and mobile laser scanners (MIS). While these three main types of Lidar systems together serve a large number of applications, none of them are optimised for fast and flexible scanning in challenging locations, rugged terrain and complicated urban structures. Personal laser scanners (PIS) fill this void and are now evolving towards compact, agile and flexible solutions for mapping complex environments. This article explains the new Akhka R2 PLS and illustrates its use in various applications. Numéro de notice : A2016-012 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79344 [article]

Parallel computing in photogrammetry / Andrey Sechin in GIM international, vol 30 n° 1 (January 2016)

Public [article]  inGIM international > vol 30 n° 1 (January 2016) . - pp 21 - 23 Titre : Parallel computing in photogrammetry Type de document : Article/Communication Auteurs : Andrey Sechin, Auteur Année de publication : 2016 Article en page(s) : pp 21 - 23 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique [Termes IGN] orthoimage [Termes IGN] orthophotoplan numérique [Termes IGN] zone homogène Résumé : (éditeur) The race between data production and processing capacity has been going on for many decades, with data production usually on the winning team. This is also true for airborne and space-borne imagery, as the amount of images captured by satellite sensors and aerial cameras is growing not only steadily but also rapidly. How can the abundance of pixels be processed into photogrammetric products quickly and effectively? The answer lies in parallel computing. Today, computer clusters enable fast and affordable processing of photogrammetric tasks. The author shows how parallelism speeds up the creation of seamless orthomosaics. Numéro de notice : A2016-013 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79345 [article]

Measuring spatial developments in the Czech Republic / Vladimíra Šilhánková in GIM international, vol 30 n° 1 (January 2016)

Public [article]  inGIM international > vol 30 n° 1 (January 2016) . - pp 25 - 27 Titre : Measuring spatial developments in the Czech Republic Type de document : Article/Communication Auteurs : Vladimíra Šilhánková, Auteur ; Jan Langr, Auteur ; Michael Pondělíček, Auteur Année de publication : 2016 Article en page(s) : pp 25 - 27 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] développement économique [Termes IGN] image satellite [Termes IGN] prise de vue nocturne [Termes IGN] République Tchèque [Termes IGN] surveillance Résumé : (éditeur) A country's local spatial development can be derived from socio-economic indicators assigned to administrative units. Proper management and monitoring often require statistics at a more detailed level. However, it is difficult if not impossible to sub-aggregate the statistics to smaller areas than administrative units. A reliable alternative is to measure the intensity and extent of night-time illumination and the changes over time. The authors have developed two indicators derived from satellite night-time images for monitoring local spatial developments in the Czech Republic. Numéro de notice : A2016-014 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79346 [article]

Dense image matching / Martin Kodde in GIM international, vol 30 n° 1 (January 2016)

Public [article]  inGIM international > vol 30 n° 1 (January 2016) . - pp 28 -29 Titre : Dense image matching Type de document : Article/Communication Auteurs : Martin Kodde, Auteur Année de publication : 2016 Article en page(s) : pp 28 -29 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications [Termes IGN] accentuation d'image [Termes IGN] données massives [Termes IGN] semis de points [Termes IGN] vision par ordinateur Résumé : (éditeur) Point clouds are increasingly a prime data source for 3D information. For many years, Lidar systems have been the primary way to create point clouds. More recently, advances in the field of computer vision have allowed for the generation of detailed and reliable point clouds from images - not only from traditional aerial photographs but also from uncalibrated photos from consumer-grade cameras. Dense image matching is the powerful technology underpinning this development. Numéro de notice : A2016-015 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79347 [article]

Semantically enriching point clouds / Merwin Rook in GIM international, vol 30 n° 1 (January 2016)

Public [article]  inGIM international > vol 30 n° 1 (January 2016) . - pp 31 - 33 Titre : Semantically enriching point clouds Type de document : Article/Communication Auteurs : Merwin Rook, Auteur ; Stella Psomadaki, Auteur Année de publication : 2016 Article en page(s) : pp 31 - 33 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] acquisition de données [Termes IGN] application métier [Termes IGN] Delft (Pays-Bas) [Termes IGN] formation [Termes IGN] information géographique [Termes IGN] traitement de données Résumé : (éditeur) The Geomatics master programme at Delft University of Technology focuses on geographical information science. Geomatics in Delft differs from other geomatics programmes in its close connection to the Faculty of Architecture and the Built Environment. In their second - and final - year of study, the geomatics students embarked on a 10-week Geomatics Synthesis Project as a group. The objective was to undertake a small but real-world research project where experience could be gained in the entire geoinformatics chain (acquisition, processing and application). Numéro de notice : A2016-016 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79348 [article]