January-February 2019

GIM January-February 2019 cover

Ranging from an interview with FIG president Rudolf Staiger to a inspiring story on the 3D city modelling project of the Turkish metropolis Istanbul, the first 2019 issue of GIM International encompasses a wide variety of the geomatics field of expertise. The overview article is dedicated to the use of data from Landsat satellites and how it has evolved over time to become a coernerstone of global land imaging with broad societal benefits.

A selection of articles in this issue of GIM International are:

- The Multispectral Journey of Lidar
- Point Clouds as the Future Topographic Core Data
- Interview with FIG President Rudolf Staiger 
- Landsat: the Cornerstone of Global Land Imaging
- 3D City Modelling of Istanbul

3D City Modelling of Istanbul

3D City Modelling of IstanbulThe Turkish city of Istanbul is developing a 3D city model mainly aimed at urban planning. The data sources used so far include airborne Lidar, aerial images and 2D maps containing footprints of buildings. Everybody engaged in creating 3D models of large cities faces many issues, challenges and limitations, including excessive data storage requirements, the need for manual editing, incompleteness and other data quality problems. In this article, the authors share their experiences on creating models of the city of Istanbul at the level of detail (LOD) 2 and 3. Read on...

The Topographic Core Data

Point Clouds as the Future Topographic Core DataCould 3D point cloud data be used as the framework for topographic information in the future? Point clouds can be captured with an ever-increasing number of means from ground-based, airborne and spaceborne platforms to understand the surrounding reality and detect critical developments. What are the future technologies and processes that will build the capability for high-density 3D data? Read on...

Interview with Rudolf Staiger

Rudolf StaigerThe FIG president holds one of the most influential positions in the surveying field and helps to shape the profession. The new president, Rudolf Staiger, was elected during the Istanbul Congress in 2018 and officially took office for a period of four years in November. In this interview, GIM International asks him about his views on the profession, now and in the future, and also about who Rudolf Staiger actually is. Read on...

Landsat: the Cornerstone of Global Land Imaging

Landsat 8 SatelliteThe Landsat satellites provide an uninterrupted space-based data record of the Earth’s land surface to help advance scientific research towards understanding our changing planet. In this article, the authors look at how the use of data from Landsat satellites has evolved over time to become a cornerstone of global land imaging with broad societal benefits. Landsat’s long-term data record provides an unrivalled resource for observing land cover and land-use change over a time scale of decades. The free and open Landsat data policy announced in 2008 unleashed global-level research without the onus of data cost. Evolving analytical and computing capabilities make it possible to tackle complex world problems in search of a solution. The Landsat archive is poised to shift towards more real-time monitoring and understanding of the Earth. Read on...

 
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