İbrahim Öztuğ Bildirici

• PhD
• Professor (Full) at Konya Technical University

Harita projeksiyonları alan, açı ve uzunluk koruma özelliği sağlayacak şekilde geliştirilebilir. Uzunluk koruma belli bir yönde, açı koruma ise diferansiyel anlamda olmasına karşın alan koruma hem diferansiyel hem de sonlu büyüklükler için geçerlidir. Ancak meridyen ve paraleller ile sınırlanmış bölgeler dışında sonlu büyüklüklerdeki şekillerin ala...

Mart 2020’de COVID-19 salgını ile 2019-2020 Akademik Yılı Güz Döneminden itibaren yüz yüze olarak yürütülen dersler uzaktan eğitim şeklinde yürütülmeye başlamıştır. Bu süreçte Konya Teknik Üniversitesi (KTUN), Harita Mühendisliği Bölümü lisans öğrencileri için yaz döneminde yürütülen seçmeli projelerden Kartografik Tasarım dersi 2019-2020 ve 2020-2...

The total station-based QDaedalus system, developed in 2014 by ETH Zurich in Switzerland, incorporates a charge-coupled device (CCD) camera in support of daytime geodetic and nighttime astrogeodetic observations. The successful realization of astrogeodetic observations has resulted in astrogeodetic vertical deflection (VD) data collection in German...

Astrogeodetic vertical deflection (VD) data observed by astrogeodetic systems, which provide important information about Earth’s gravity field, are frequently used in the Earth Science disciplines, including geodesy and geophysics, to control and validate terrestrial, airborne and satellite gravity data. In this study, the total station-based QDaed...

Harita projeksiyonları problemlerinin çözümünde çeşitli nümerik analiz yöntemlerine gerek duyulur. Doğrusal olmayan denklemlerin iteratif çözümü yaygın kullanılır. Kaynaklarda çok fazla ele alınmamasına rağmen nümerik türevin pratik olarak kullanımı mümkündür. Nümerik türev deformasyon araştırmasında, doğrusal olmayan denklem çözümleri ise ara deği...

Son yıllarda 1 yay saniye çözünürlüklü SRTM verileri yüksek çözünürlüklü global modeller içinde önemli bir veri kaynağı olarak ilgili alanlarda kullanılmaktadır. Bu çalışmada topografik haritaların sayısallaştırılması yoluyla elde edilen yerel veriler ile SRTM SYM karşılaştırılmıştır. İki sistemin yükseklik başlangıcı da aynı olmadığından karşılaşt...

Gravimetrik jeoit modellerinin oluşturulma sürecinde gravite verilerinin yanı sıra topoğrafik yüksekliklere de ihtiyaç vardır. Çünkü jeoit modelleme çalışmalarında topoğrafya etkisi en önemli parametrelerden biridir ve fiziksel yeryüzeyinden toplanan gravite ölçüleri jeoit modellemede doğrudan kullanılamaz. Serbest hava gravite anomalilerinin enter...

Kümeleme analizi ile birden çok konuda ortak özellikleri olan nesneler bulunur. Tematik kartografyada iller, ilçeler gibi veri toplama birimleri nesneler olarak kabul edilip, kümeleme analizi ile seçilen konularda ortak özelliğe sahip bölgeler belirlenerek, elde edilen sonuçlar tematik haritalar halinde ilgili kullanıcılara sunulabilir. Bu çalışmad...

The radial basis functions are an effective interpolant to the three-dimensional point cloud data, where the points are sparsely scattered in the space. Unmanned aerial vehicle (UAV) imagery acquires large amounts of 3D points as called point cloud from Earth's surface data. To take advantage of the point clouds, we examined the performance of 3D i...

Elipsoit yüzeyinde eğriliklerin değişken olması nedeniyle temel ödev problemlerinin düzlem ve kürede olduğu gibi her koşulda sonuç veren basit bağıntıları yoktur. Jeodezinin tarihsel gelişiminde problem, uygulamada yeterli olduğundan uzaklıkların 100km den küçük olduğu nokta konumlarına yönelik ele alınmış ve çeşitli çözüm yöntemleri geliştirilmişt...

In February 2000, the “Shuttle Radar Topography Mission (SRTM)” satellite captured elevation data by scanning the Earth landmasses between the 60 o North and South latitudes. After the mission of 11 days, the collected data were processed, and a Digital Elevation Model (DEM) within one arc-second resolution for United States and three arc-second re...

Nowadays, many specialists in geography recommend the usage of digital maps and atlases. But in educational system, especially in Turkey, a traditional cartography based on paper maps is used more than the digital ones. This report considers the deficiencies of current atlas maps that are used in the education of geography and social studies in ter...

Orientation software produced today is generally designed for the navigation of cars. However, the navigation needs of pedestrians are different from those of drivers. The aim of this study is the design of a cartographic interface that supports the navigation of pedestrians in unfamiliar areas using landmarks and evaluation of this geo-mobile appl...

Map projections are given by forward transformation equations. Inverse transformation is derived from forward transformation analytically or numerically. In this paper, a numerical approach for inverse transformation of map projections is proposed, which is based on numerical differentiation and Newton–Raphson root finding method. This approach can...

Tissot’s indicatrix or ellipse of distortion is a diagram that is the projection of an infinitesimal circle on the original surface. It is normally an ellipse of which elongation depends on the amount of distortion caused by map projection. It provides a medium for analyzing existing projections and developing new ones. The ellipse can be scaled an...

The aim of this study is to evaluate the effects of map to expected gains, by examining map within social study textbooks in terms of cartographic design. In developed countries its seen that maps which being used in many themes (from engineering to military, education and training to scientific studies and etc.) took place in life with television...

Konya Closed Basin that includes two depression blocks, Konya and Tuz Gölü, is the biggest endorheic basin in Turkey. A lowering in the ground levels of the depositional areas has been shown with respect to the surrounding mountains. In the past, this process was controlled by geological and hydrogeological phenomena; nowadays, it has gained a new...

: The CHANGE generalization software package developed by the University of Hanover was applied to Turkish topographic base map data. The package is capable of processing roads and buildings. Through support programs, several benefits were gained, including a reliable data conversion between the internal file format of the package and DXF, improved...

The term mashup is used for incorporating different web resources and information within a web site. Mashups are an integral part of Web2.0, which represents a variety of innovative resources, and ways of interacting with, or combining web content. Mashups are based on Application Programming Interfaces (APIs) that are online libraries of functions...

Konya Closed Basin

Changes in object geometry‐type such as area to line are necessary in terms of the requirements of cartographic generalisation, and also for the creation of the network topology in geographical information systems. Geometry‐type changes that reduce dimension include area‐line, area‐point and line‐point changes. This study focuses on area‐line chang...

In February 2000, the Space Shuttle Endeavour of the “Shuttle Radar Topography Mission” (SRTM) launched by NASA collected elevation data by scanning the earth landmasses between ∼60º north and south parallels. After this 11 days mission, the collected data were processed, and a Digital Elevation Model (DEM) at 1-arc second – and also 3-arc-second –...

Depending on scale, topographic maps depicting the shape of the land surfaces of the Earth are produced from different data sources. National topographic maps at a scale of 1:25 000 (25K maps) produced by General Command of Mapping are used as the base map set in Turkey. This map set, which consists of approximately 5500 sheets, covers the whole co...

Fiducial marks in the air photographs are extracted automatically to study pattern search with Bayesian learning method for interior orientation in photogrammetry. For each metric image evaluation process, the relation between the pixel coordinate system and image coordinate system is found. Fiducial marks are measured by using an automatic softwar...

Topographic maps that show the shape of land surfaces of the Earth are derived from different data sources depending on the map scale. National topographic maps with the scale of 1:25 000 (25K maps) are used as the base topographic map set published by General Command of Mapping in Turkey. This map set, which consists of approximately 5 500 sheets,...

In February 2000, the "Shuttle Radar Topography Mission" satellite launched by NASA captured elevation data by scanning the Earth landmasses between the ~60º North and South parallels. After the mission of 11 days, the collected data were processed, and a Digital Elevation Model (DEM) with 1×1 arc second resolution was created. Thereafter, the firs...

Some map projections are defined by table values rather than mathematical equations. The most popular and famous one in this category is the Robinson Projection. The Ginzburg projections, which were developed and used in the former Soviet Union, are among the other table‐based world projections. A computational method is required in order to effici...

On February 2000, The Shuttle Radar Topography Mission (SRTM) Satellite collected global topographic data using a multifrequency radar system. The precision of the height information for a global model data is so high that is never reached before. Many research institutions and national mapping agencies have been testing the quality and reliability...

The map projection problem involves transforming the graticule of meridians and parallels of a sphere onto a plane using a specified mathematical method according to certain conditions. Map projection transformations are a research field dealing with the method of transforming one kind of map projection coordinates to another. The conversion from g...

Coordinate transformations refer to mathematical processing that enables overlay of digital maps that use different coordinate reference systems, that is, map projections. The transformation from geographical to map (plane) coordinates is the conventional practice in cartography, which is called forward transformation. The inverse transformation, w...

Digital imaging is a rapid growing area with the developments in computer technology. Digital color use has become a conventional tool in many disciplines, such as cartography remote sensing and photogrammetry. The need for better color quality enforces digital imaging industry to produce devices with less color distortions. Despite the today's adv...

In cartography map projections are used to transform geographical coordinates to plane coordinates. This is called forward transformation. For many geographic information system (GIS) applications paper maps are digitised, and so captured data are integrated into another data set. In this situation plane coordinates should be transformed into geogr...

Coordinate transformations refer to mathematical processing that enables overlay of maps that use different coordinate reference systems, that is, map projections. The conversion from geographical to plane coordinates is the normal practice in cartography, which is called forward transformation. The inverse transformation, which yields geographical...

Electronic atlases are becoming a new research field in cartography. Although some de- veloped countries have created their own electronic atlases, there is no cartographic adequate electronic atlas in Turkey. In this article, a case study on an electronic statisti- cal atlas is reported. In Turkey, the statistical information is published annually...

A Multi-resolution/representation-database (MRDB) can be described as a spatial database, which can be used to store the same real-world-phenomena at different levels of precision, accuracy and resolution. Furthermore these phenomena can be stored in different ways of presentation or symbolisation. In an MRDB, different views on the same physical o...

Reducing the real world reality to map scale makes generalization necessary. This reduction influences geometry and attributes of objects. In model generalization, area-line, area-point and line-point changes occur. In this study, area-line changes are handled. Since area objects have different geometric properties, there is no universal solution t...

Vector data is captured using various methods, e.g. manual digitizing, automatic vectorization etc. Errors or inconsistencies, e.g. self-cutting polygons, identical points etc, can not be avoided, even if digitizing is done very carefully. Vector data must be analyzed and corrected prior to any GIS application. This process is called "line-cleaning...

Nowadays Spatial Databases are gaining more importance for being the base of National Information Systems which forces National Map Agencies to convert existing data structures that have been used only for map productions for many years into Spatial Databases. Türkiye upgraded map production system framework from the cartographer-aided method to th...

Some map projections are defined by table values rather than mathematical equations. The most popular and famous one in this category is the Robinson Projection. The Ginzburg projections, which were developed and applied in the former Soviet Union, are among the other table-based world projections. A computational method is required in order to eff...

In this paper, an electronic statistical atlas as a case study is described. The authors have completed development of a prototype of the atlas, which present the spatial information in the statistical yearbook in an atlas structure that contains thematic and animated maps. The paper also reports how statistic geometric and non-geometric data are c...

Determining the baseline around the Aegean Sea between Greece and Turkey has been a juridical problem for years. The line, from which the outer limits of the State's territorial sea are measured, has been discussed and interpreted for years between those countries. In order to bring a reliable suggestion to this problem, the Aegean Coastline has be...

A digital elevation model (DEM) is a digital representation of land surface topography or terrain. A DEM can be represented as a regular grid or as an irregular triangulation network. DEMs are used in many branches of geosciences for a variety of purposes. DEMs are commonly built using remote sensing or land surveying techniques, however, they may...

Map displays are used in cartography as interactive working documents in GIS, CAD, analytical photogrammetry and digital image processing systems; as final presentations, with or without interaction; and as the design phase for producing paper maps. These methods make different demands and have therefore different design philosophies. From a design...

Location based services provide the ability to find the geographical position of a wireless mobile device and to provide services based on that location. When using mobile devices for navigation, pedestrians require the true route information. This Wireless Campus LBS Project is designed to provide a test for location based services research in Kon...