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Digital image processing plays a crucial role in geoinformatics-based disaster management by enabling the analysis, interpretation, and extraction of valuable information from satellite and aerial imagery. This processed information aids in risk assessment, damage evaluation, and planning for response, recovery, and mitigation strategies. The process of digital image processing involves several key steps, each of which contributes significantly to the effective use of remote sensing data in disaster management. The first step is image acquisition, which involves collecting raw data through remote sensing platforms such as satellites or UAVs (Unmanned Aerial Vehicles). Sensors onboard these platforms capture electromagnetic radiation reflected or emitted by the Earth's surface, producing digital images in multiple spectral bands. In disaster management, timely acquisition of pre- and post-event images is essential to assess the extent and nature of damage. For instance, images taken before and after a flood or earthquake can be compared to detect changes and evaluate affected areas. The second step is image pre-processing, which includes various techniques to enhance the quality of raw imagery by eliminating errors and distortions. This phase ensures that the data is geometrically and radiometrically corrected for accurate analysis. Radiometric corrections address sensor irregularities and atmospheric conditions, while geometric corrections align the image with real-world coordinates using ___ ____ _________ _________ __________ ___ _________ ____ ___ ________ __________.
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