Register Now for the International LiDAR Mapping Forum 2011

Astor Crowne Plaza, New Orleans, 7-9 February 2011

The International LIDAR Mapping Forum 2011 (ILMF 2011), the eleventh in a series that has long established itself as the premier LIDAR event, attracts professionals from around the world with one focused objective of sharing information on LIDAR technology and Mobile Mapping Systems.

ILMF 2011 will showcase more than 50 leading companies in this rapidly growing global market. Exhibitors include LIDAR and complementary sensor manufacturers, survey service companies, data processing, GIS and management specialists and the latest mobile mapping vehicles.

The exhibition is complemented by a three day Technical Conference, where speakers from the international LIDAR community will be reporting on latest technology advances and recent projects for airborne, bathymetry and mobile mapping systems, highlighting actual experiences and lessons learned.

For delegates new to the LIDAR community, or those wishing to learn how LIDAR technology can deliver increased mapping knowledge at reduced cost, there is a full series of learning workshops and demonstrations.

The ILMF is fully supported by ASPRS and MAPPS.

On the Spatio-temporal Analysis of Hydrological Droughts from Global Hydrological Models

Hydrology and Earth System Sciences, 8, pp. 619-652, 2011

G. A. Corzo Perez, M. H. J. van Huijgevoort, F. Voß, and H. A. J. van Lanen

“The recent concerns for world-wide extreme events related to climate change phenomena have motivated the development of large scale models that simulate the global water cycle. In this context, analyses of extremes is an important topic that requires the adaptation of methods used for river basin and regional scale models. This paper presents two methodologies that extend the tools to analyze spatio-temporal drought development and characteristics using large scale gridded time series of hydrometeorological data. The methodologies are distinguished and defined as non-contiguous and contiguous drought area analyses (i.e. NCDA and CDA). The NCDA presents time series of percentages of areas in drought at the global scale and for pre-defined regions of known hydroclimatology. The CDA is introduced as a complementary method that generates information on the spatial coherence of drought events at the global scale. Spatial drought events are found through CDA by clustering patterns (contiguous areas). In this study the global hydrological model WaterGAP was used to illustrate the methodology development. Global gridded time series (resolution 0.5°) simulated with the WaterGAP model from land points were used. The NCDA and CDA were applied to identify drought events in subsurface runoff. The percentages of area in drought calculated with both methods show complementary information on the spatial and temporal events for the last decades of the 20th century. The NCDA provides relevant information on the average number of droughts, duration and severity (deficit volume) for pre-defined regions (globe, 2 selected climate regions). Additionally, the CDA provides information on the number of spatially linked areas in drought as well as their geographic location on the globe. An explorative validation process shows that the NCDA results capture the overall spatio-temporal drought extremes over the last decades of the 20th century. Events like the El Niño Southern Oscillation (ENSO) in South America and the pan-European drought in 1976 appeared clearly in both analyses. The methodologies introduced provide an important basis for the global characterization of droughts, model inter-comparison, and spatial events validation.”

An Iconography-Based Modeling Approach for the Spatio-Temporal Analysis of Architectural Heritage

Proceedings of the 2010 Shape Modeling International Conference, IEEE Computer Society, Washington, DC, USA

Livio De Luca, Chawee Busarayat, Chiara Stefani, Noemie Renaudin, Michel Florenzano, and Philippe Véron

“The study of historic buildings is usually based on the collection and analysis of iconographic sources such as photographs, drawings, engravings, paintings or sketches. This paper describes a methodological approach to make use of the existing iconographic corpus for the analysis and the 3D management of building transformations. Iconography is used for different goals. Firstly, it’s a source of geometric information (image-based-modeling of anterior states); secondly, it’s used for the re-creation of visual appearance (image-based texture extraction); thirdly it’s a proof of the temporal distribution of shape transformations(spatio-temporal modeling); finally it becomes a visual support for the study of building transformations (visual comparison between different temporal states). The aim is to establish a relation between the iconography used for the hypothetical reconstruction and the 3D representation that depends on it. This approach relates to the idea of using 3D representations like visualization systems capable of reflecting the amount of knowledge developed by the study of a historic building.”

The Preliminary Temporal Analysis of Ground Deformations in the Area of Dabrowski Coal Basin (south Poland)

2010 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 25-30 July 2010, pp. 903 – 905

Porzycka, Stasnislawa Lesniak, Andrzej

“In this work the preliminary temporal analysis of ground deformations in the area of Dabrowski Coal Basin was performed. In this region the intensive coal exploitation has been performed for about 200 years. The studied region covers the mining areas of seven coal mines. Moreover this area is crossed by many faults. In the described work the analysis concerned only the small, long lasting deformations that were detected using PSInSAR technique. The aim of this work was to analyze the changes in the deformations’ trend between years 1992 and 2003 for each PS point. In order to perform this task the special algorithm was developed. It allows detecting maximum one (the most significant) trend change in the considered period of time. Performed analysis revealed that in the study area the changes of trend deformations occurred for about 40% of PS points. The spatial and temporal distribution of PS points with trend changes showed some regularity. This regularity may indicate the influence of coal exploitation on the values of small, long period deformations that were previously explained only by neotectonics movements.”