Geo-Information Engineering
Faculty of Civil & Environmental Engineering
Israel Institute of Technology

Methods and Algorithms

Information Extraction regarding Environmental change using Remote Sensing imagery was achieved by developing the following methodologies:

  • Wavelet Techniques for reducing unwanted multiplication effects on signals obtained from hyper and multi spectral sensors.
  • Advanced Unmixing methods utilizing both hyper/ multi spectral and multi-temporal data allowing estimation of cover fractions in heterogeneous environments.
  • Multi-temporal backscattering index for deriving Soil moisture from SAR data.
  • Phenological Subtraction technique for deriving Life-form compositions.
  • Reconstruction techniques allowing derivation of information regarding past vegetation and soil patterns from single date photographs.
  • Multi-scale and multi-temporal analysis of soil drying rates for extracting information regarding soil groups.
  • Water cloud model facilitating integration of different sensory data for estimating Areal Above Ground Herbaceous biomass.
  • Knowledge based Expert systems for integrating sensory and existing thematic information for mapping land cover / land use.
  • Mapping shrublands biomass using spectral data, rainfall information and Water Use efficiency information.
  • Mapping and analysis of long-term trends in Water Use Efficiency along Climatic Gradients.

Information extraction regarding spatial and temporal pattern was achieved by developing the following techniques:

  • Landscape change analysis for revealing rates of land use and land cover transformation and their impact on open / semi-natural landscapes.
  • Cellular Automata simulation of Patch Pattern dynamics allowing insights into modes of vegetation spread strategies on these patterns.
  • Combining Monte Carlo and FARSITE techniques for simulating fire spread as the main source of anthropogenic disturbance .
  • Autocorrelation techniques for pattern analysis and for revealing core areas of change.