Papers by Necla Ulugtekin
Geomatik
Üç boyutlu (3B) kent modellerinin yaygınlaşması, kentlere ilişkin mekânsal bilgilerin 3B olarak s... more Üç boyutlu (3B) kent modellerinin yaygınlaşması, kentlere ilişkin mekânsal bilgilerin 3B olarak sunulmasını ve dolayısıyla kullanıcıların mekânsal algılarının artırılmasını mümkün hale getirmiştir. Bu bağlamda geliştirilen CityGML standardı ile birlikte geleneksel olarak haritalar için kullanılan ölçek kavramı yerine 3B mekânsal veriler için ayrıntı düzeyi (LoD- level of detail) kavramı kullanılmaya başlanmıştır. Böylelikle, farklı uygulama gereksinimlerine göre farklı ayrıntı düzeylerinde kent modellerinin üretimi için standartlar ortaya konmuştur. Bu çalışmada, hava LiDAR verileri kullanılarak İstanbul Tarihi Yarımada sınırları içerisinde yer alan Eminönü Meydanı ve çevresinin yüksek ayrıntı düzeyinde (LoD3) turistik amaçlı 3B kent modeli oluşturulmuştur. Model turistik amaçlı tasarlandığından, referans olarak seçilen yapıların bulunduğu bölge dışında kalan yapılar için 3B bina genelleştirme yöntemi kullanılarak bu yapıların ayrıntı düzeyi indirgenmiştir. Oyun motoru tabanlı yapıl...
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Abstracts of the ICA
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İstanbul Teknik Üniversitesi Dergisi, 1994
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Fresenius Environmental Bulletin, 2019
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Scientific Research and Essays, Jul 4, 2011
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Fresenius Environmental Bulletin, 2019
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DergiPark (Istanbul University), Oct 1, 2011
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Today, (geo)spatial data/information and therefore maps are increasingly becoming an important pa... more Today, (geo)spatial data/information and therefore maps are increasingly becoming an important part of life. Cartography, one of the main disciplines in this field, makes important contributions to the phases of modeling, processing, analysis, visualization and dissemination of multidimensional geospatial data/information in theoretical and practical terms, and in this context, it also plays a critical role in the advancement of multidisciplinary spatial informatics, geographic information science and spatial intelligence fields. Previous developments in these fields were shared and discussed with the (geo)spatial information sector by us in the previous national mapping and GIS congresses. When looking at current issues, it is inevitable to use big data analysis in solving complex relationships and uncertainties in order to create social “spatial thinking”. This situation raises the problem of “map design” to be used for acquiring knowledge from big data. Map design is a multidimen...
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Abstracts of the ICA, 2021
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Abstracts of the ICA, 2021
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The map is the unique tool to show spatial relationships in the world. Because of that, written a... more The map is the unique tool to show spatial relationships in the world. Because of that, written and visual media frequently give a place maps as a graphic element. Thus, the study focuses on the maps which published in the newspapers. The main aim of this study is collecting, categorizing and archiving maps’ contents of 8 newspapers, which were published since the Alphabet Revolution of Turkish Republic (1928) to year 2000. During the study, maps and visuals resembling maps have been examined and classified by cartographic rules and their themes in a Web based database. The primary objective of the study is to archive these maps, analyze their Cartographic levels and determine their roles in the news to show map use in all part of the newspapers and to prove the importance of Cartography in spreading knowledge through maps in the news. It is believed, a new Cartographic perspective has been contributed to existing literature.
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In this study, car navigation considered as the basic activity and an approach for the production... more In this study, car navigation considered as the basic activity and an approach for the production of the navigation maps tried to be proposed in terms of Multiple Representational Data Bases (MRDB). However the system needs systematic updates in attribute and geometric level. In this context, the concept of MRDB, map design requirements for navigation and its constraints will be explained in terms of small display cartography. Various representation levels for car navigation systems and their sample maps will be introduced as a key study executed for Istanbul and some important issues on symbol selection and design will be examined based on symbol types and visual variables used to create them.
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In this paper, map design requirements and its constraints are explained in terms of small displa... more In this paper, map design requirements and its constraints are explained in terms of small display cartography. Cartographic visualization and map design fundamentals are examined moreover their requirements caused by new technologies, just as hand held devices, are mentioned. These new requirements are examined comparatively with conventional methods and finally future trends on this subject are briefly emphasized.
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Remotely sensed imagery has an enhanced capability of extracting information about small image st... more Remotely sensed imagery has an enhanced capability of extracting information about small image structures (both artificial and natural objects). Fast, low cost, accurate and spatially rich data can be acquired via remote sensing technology. For this reason, satellite image mapping is quite common technique and image maps provide a great contribution to cartography and Geographic Information Systems as data sources. However, there are several remote sensing satellites with various kinds of spectral and spatial resolution and they detect different regions of electromagnetic spectrum. One needs to know which satellite image is suitable for which kind of mapping. On the other hand, image mapping which is based on resolution is a procedure including information extraction from pixels. While pixel algorithms and processing methods are suitable for medium and low resolution images, pattern recognition is suitable for high resolution images. Thus, there is a need to evaluate maps according ...
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ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
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Nesne tanımlama yöntemlerini iki sınıfta incelemek mümkündür: Bu yöntemlerin ilkinde nesnenin iç ... more Nesne tanımlama yöntemlerini iki sınıfta incelemek mümkündür: Bu yöntemlerin ilkinde nesnenin iç kısmını dış ortamdan ayıran sınır (nesnenin yüzeyi) tanımlanır. Bu yöntemin belirgin örnekleri arasında poligonsal nesneler ve parametrik yüzeyler bulunur. İkinci yöntemde ise nesnenin uzayda kapladığı hacim göz önünde bulundurulur ve genellikle bu yöntem nesnenin sınır bilgisinin uygulama için yetersiz kaldığı durumlarda kullanılır.
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Cografi Bilgi Sistemleri (CBS) uygulamalarinda, fiziksel yeryuzunun farkli amac ve olceklerdeki h... more Cografi Bilgi Sistemleri (CBS) uygulamalarinda, fiziksel yeryuzunun farkli amac ve olceklerdeki haritalarin olusturulmasi asamasinda veri yogunlugundan kaynaklanan problemler cikmaktadir. Bunlarin en onemlileri sonuc haritalarin tasarimi sirasinda gorulen sunulacak olan verinin icerik optimizasyonu ve amaca uygun olarak gorsellestirilmesidir. Fiziksel yeryuzunun farkli amac ve olceklerde modellenmesi konusu CBS uygulamalarinda olcek seviyelerinin tanimlanmasi yontemiyle cozulmektedir. Bu kapsamda her bir olcek seviyesi icin farkli icerikte haritalar olusturulmaktadir. Coklu gosterimler olarak da adlandirilan bu haritalar gunumuzde tek bir olgunun ya da varligin tek bir sistem icerisinde farkli boyutlarda (cozunurluk, olcek, dogruluk, zaman vb.) bir cok defa modellenmesi, gosterilmesi ve kullanilmasini amaclayan Coklu Gosterim Veritabanlari (CGVT) yaklasimi ile modellenmektedir. CGVT yaklasiminin gelistirilmesiyle birlikte harita uretimi ve guncellenmesi surecinin otomasyonu acisinda...
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ISPRS International Journal of Geo-Information, 2019
This study focuses on newspaper maps, which have an important role in conveying spatial informati... more This study focuses on newspaper maps, which have an important role in conveying spatial information to newspaper readers. Maps and map-like items in the main Turkish newspapers within a certain period were evaluated in regard to the scope of the study. A database was constructed to organize the collected data and conduct the analysis. In addition to cartographic and thematic analyses, the database allows “georeferencing” to be conducted as well. However, the current study focused on the cartographic and thematic properties of these maps. Their deficiencies were identified from a cartographic perspective and with that, the parts of newspapers that maps are mostly included in were investigated, and we aimed to identify the topics and events that increase map usage in newspapers. For this purpose, maps of earthquake-related news were evaluated as a case study to show some spatial and thematic determinations. Thus, the contribution of newspapers to spatial thinking abilities and geograp...
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Papers by Necla Ulugtekin