Lambers, Martin

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Lambers, Martin

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    PublicationAccess status: Open Access ,
    Interactive visualization of remote sensing data
    (2011)
    Lambers, Martin
    Remote Sensing is an important tool for the analysis and interpretation of a wide range of global and regional conditions and processes on the earth. Airborne and spaceborne Remote Sensing systems produce a rapidly growing number of data sets, and improvements in sensor technology result in continuously increasing spatial and spectral resolutions of these data sets. To visualize Remote Sensing data for analysis and interpretation purposes, sensor data from various sources has to be processed and combined to produce geometry and color information. Since the details contained in multimodal high-resolution data sets cannot be preserved in a single static image, interactive visualization techniques are required. A system for interactive visualization of Remote Sensing data allows to choose and adjust data processing and data fusion methods interactively. This enables the user to bring out the data details that are relevant for the current aims and objectives, and thus to gain better insight into the data. Interactive visualization of Remote Sensing data is a challenging problem: - Remote Sensing data sets are generally very large due to their high resolution and area coverage, and visualization tasks often need to combine multiple data sets. An interactive visualization system must be able to efficiently handle large amounts of diverse input data, and at the same time provide data processing capabilities that allow interactive adjustments. - To produce geometry and color information from sensor data, specialized processing methods are required for different sensor systems. These specialized methods must allow interactive and intuitive adjustments. - The dynamically generated geometry and color information resulting from interactive data processing and fusion must be rendered efficiently and accurately. This dissertation proposes methods to address these challenges. A framework is presented that handles data management, processing, and fusion. Specialized interactive sensor data processing methods are examined based on the example of images generated by Synthetic Aperture Radar systems. Efficient geometry refinement methods are presented that are suitable for rendering dynamically generated data with guaranteed error bounds.
    Source Type:Doctoral Thesis
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    PublicationAccess status: Open Access ,
    Selected topics in interactive computer graphics
    (2021)
    Lambers, Martin
    This habilitation thesis summarises the postdoctoral scientific work of the author in the following areas: mappings between the sphere and planar surfaces, simulation of time-of-flight sensors, and complementary work and related topics. The overarching topic of this work is the interactive aspect of Computer Graphics: the ultimate goal is to enable interactive visual analysis, simulate dynamic scenes in an interactive fashion so that motion is handled appropriately, reconstruct 3D environments with interactive sensor handling, or render stereoscopic contents with the goal of immersion. All of these use cases impose hard constraints on the computing time available to produce or to process each frame of information, and therefore require careful design of data structures and algorithms that make efficient use of dedicated computing resources such as Graphics Processing Units (GPUs).
    Source Type:Habilitation
    DOI:10.25819/ubsi/8052
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