Airborne and/or spaceborne optical flood and flood damage sensory system and method thereof
AssigneeSwiss Reinsurance Company Ltd.
InventorsLukas SUNDERMANN, Vipin Kozhikkoottingal SREENIVASAN, Aaron MICHEL, Carl BERNIER
Life of this patent
Estimating the term…
Abstract
The invention relates to automated airborne and/or spaceborne optical flood sensory and flood impact sensory method and system for measuring and/or forecasting a weightage-specific, quantitative flooding measure value and/or a weightage-specific, quantified flooding impact extent measure value, the weightage being based on an object density of a selected topographic and/or geographic area impacted by an occurrence of a flood event.
Claims27
An airborne and/or spaceborne optical flood sensory method for measuring and/or forecasting a weightage-specific, quantitative flooding measure value and/or a weightage-specific, quantified flooding impact measure value, the weightage being based on an object density of a geographic and/or topographic area impacted by an occurrence of a flood event, the method comprising:
- measuring, by aerial and/or space-based remote sensing devices, digital imagery sensory data;
- transmitting said digital imagery sensory data via a data transmission link to a central ground station;
- capturing, by a predefined data structure of a flood map generator, the geographic and/or topographic area, the predefined data structure at least comprising definable area parameters capturing a geographic location and/or a geographic extent of said geographic and/or topographic area;
- generating, by the flood map generator, a flood map based on the transmitted digital imagery sensory data using the predefined data structure;
- splitting, by the central ground station, the geographic and/or topographic area by a spatial grid with equidistant or adjusted grid cells of a definable or adjustably determined size;
- detecting and aggregating, for each grid cell or group of grid cells of the spatial grid, definable physical objects located in a specific grid cell or group of grid cells;
- generating for each grid cell or group of grid cells an object density-based weightage value;
- applying a normalized weight to each of the grid cells by dividing a weight per grid cell with a sum of weights for all the grid cells of the grid;
- measuring, after the occurrence of the flood event, an affected area of said geographic and/or topographic area based on measuring a flooding within the grid cells of the spatial grid, grid cells measured as flooded contributing to the measured affected area while grid cells measured as not flooded are contributing to an area measured as not affected;
- measuring a summed up value of the normalized weights for all the affected grid cells;
- and
- measuring a flooding extent measure and/or flooding impact extent measure value of the affected area based on a pre-defined trigger and said summed up value of normalized weights.
An optical-based flood impact measuring and forecasting system for measuring and/or forecasting a weightage-specific, quantitative flooding measure value and/or a weightage-specific, quantified flooding impact extent measure value, the weightage being based on an object density of a geographic and/or topographic area impacted by an occurrence of a flood event, the system comprising:
- aerial and/or space-based remote sensing devices configured to measure digital imagery sensory data and transmit said digital imagery sensory data via a data transmission link to a central ground station,
- a flood map generator including a predefined data structure and configured to capture the geographic and/or topographic area, the predefined data structure at least comprising definable area parameters capturing a geographic location and/or geographic extent of said geographic and/or topographic area;
- and generate a flood map based on the transmitted digital imagery sensory data using the predefined data structure, the and/or topographic geographic area being split by a spatial grid with equidistant grid cells of definable size,
- a density aggregator configured to detect and aggregate, for each grid cell or group of grid cells of the spatial grid, definable physical objects located in a specific grid cell or group of grid cells;
- generate for each grid cell or group of grid cells an object density-based weightage value;
- and apply a normalized weight to each of the grid cells by dividing a weight per grid cell with a sum of weights for all the grid cells of the grid,
- a flood detector configured to measure, after the occurrence of the flood event, an affected area of said geographic and/or topographic area based on measuring a flooding within the grid cells of the spatial grid, grid cells measured as flooded contributing to the measured affected area while grid cells measured as not flooded are not contributing to the measured affected area, and
- a trigger configured to measure a summed up value of the normalized weights for all the affected grid cells;
- and measure a flooding extent measure value and/or flooding impact extent measure value of the affected area based on a pre-defined trigger function and said summed up value of normalized weights.
Dependencies are inferred from the claim text.