MSc thesis handed in on Analysis of Airborne LiDAR Data for Deriving Terrain and Surface Models

MSc thesis handed in on Analysis of Airborne LiDAR Data for Deriving Terrain and Surface Models

May 9, 2016

A M.Sc thesis by Raja Ram Aryal  at the University of Applied Sciences Stuttgart was recently written  under the supervision of Dr. Hooman Latifi and Prof. Michael Hahn. The thesis focused on a comparative study on the variations of an adaptive TIN ground filtering algorithm  to extract DTM from discrete LiDAR point cloud captured in leaf-off and full wave LiDAR point cloud collected in leaf-on conditions. In addition Analysis of Variance (ANOVA) type II was used to assess the influential factors that are related to DTM random error.  The Accuracy assessment of extracted DTMs was done  at local and landscape levels in heterogeneous forest stands of Bavarian Forest National Park. The DTM generated using mirror points in leaf-off returned less RMSE (0.844 m) than in leaf-on (0.988 m) conditions. Furthermore RMSE values of 0.916 m (leaf-off) and 1.078 m (leaf-on) were observed the local level analysis when no mirror points were used. However, RMSE value of ca. 0.5 m was observed at the landscape level, with leaf-off DTM showing slightly higher error than leaf-on DTM. The DTM error increased with increasing slope. Deciduous habitat was found to significantly influence DTM error in both leaf-off and leaf-on conditions. Interaction effects were mainly observed between slope and forest habitat type.

DTMs Extracted using denser point cloud LiDAR data (leaf-on condition) using mirror points  (left side) and without using mirror (right side)

DTMs Extracted using denser point cloud LiDAR data (leaf-on condition) using mirror points (left side) and without using mirror (right side)

you may also like:

Successful PhD defense by Nina Haug

Successful PhD defense by Nina Haug

We congratulate Nina Haug from the Karlsruhe Institute of Technology (KIT) (Department of Architecture, Institute for Urban and Landscape Design, Chair of Urban Housing and Development) on her successful defense of her PhD thesis. The thesis is titled...

InnoLab presentations by Jean de Dieu Tuyizere and Gökçe Budak

InnoLab presentations by Jean de Dieu Tuyizere and Gökçe Budak

On Tuesday, the 15th of July, two InnoLab projects of our EAGLE students have been presented at our Earth Observation Research Cluster:   Jean de Dieu Tuyizere presented his topic titled "Building an Earth Observation Data Cube for Volcanoes National Park,...

Exciting Milestone: Submission of Doctoral Theses

Exciting Milestone: Submission of Doctoral Theses

We warmly congratulate Ariane Droin and Dorothee Stiller on submitting their doctoral theses today! This milestone reflects their dedication and hard scientific work over the past years. Ariane’s research focuses on using pedestrian networks to analyze individuals'...

Lallu Nikerthil Prathapan  successfully defended her master thesis

Lallu Nikerthil Prathapan successfully defended her master thesis

Today, our EAGLE student Lallu Nikerthil Prathapan defended her master thesis successfully. The master thesis is titled: “Revealing Inconsistencies in Population Datasets in Refugee and IDP Camps”.   Here is the abstract of the thesis: Accurate gridded population...

EO4CAM at the 7th Climate Conference in Veitshöchheim

EO4CAM at the 7th Climate Conference in Veitshöchheim

We are happy to share that two of our Earth Observation Research Cluster (EORC) colleagues, John Friesen and Sarah Schönbrodt-Stitt, were invited to present at the 7th Climate Conference on April 2nd in Veitshöchheim. This event, organized by the Energieagentur...