Οι δασικές πυρκαγιές ‐ ιδίως μετά την εντυπωσιακή τους αύξηση τα τελευταία έτη ‐ δημιουργούν δύο βασικές ανάγκες. Αρχικά, την άμεση διαχείριση των καμένων εκτάσεων ‐ αμέσως μετά τη κατάσβεση τους ‐ και στη συνέχεια, μία ολοκληρωμένη αντιμετώπιση του προβλήματος, με τη συνεργασία όλων των εμπλεκόμενων φορέων, σε εθνικό αλλά και τοπικό επίπεδο. Και στις δύο περιπτώσεις απαιτείται κάτι κοινό. Η ύπαρξη αξιόπιστης πληροφορίας, τόσο περιγραφικής όσο και χωρικής. Αυτό μπορεί να επιτευχθεί μονάχα με τη δημιουργία μίας χωρικής βάσης δεδομένων, στην οποία θα εισάγονται για κάθε αντιπυρική περίοδο, τα όρια της κάθε πυρκαγιάς με ποιοτική και ποσοτική πληροφορία. Οι κλασικές μέθοδοι που χρησιμοποιούνται μέχρι και σήμερα από τις υπεύθυνες υπηρεσίες, είναι ανακριβείς και χαρακτηρίζονται από υψηλό κόστος και μεγάλες χρονικές περιόδους παράδοσης των προϊόντων. Η τηλεπισκόπηση σε συνδυασμό με τα ΓΣΠ, μπορούν να δώσουν αξιόπιστα προϊόντα, με χαμηλό κόστος, αμέσως μετά τη λήξη μιας πυρκαγιάς. Οι περισσότερες όμως προσεγγίσεις που έχουν αναπτυχθεί μέχρι σήμερα, απαιτούν εξειδικευμένο προσωπικό με υψηλό επίπεδο γνώσεων. Σκοπός της εργασίας αυτής ήταν η προσπάθεια ανάπτυξης μίας αυτοματοποιημένης διαδικασίας εντοπισμού και οριοθέτησης των καμένων εκτάσεων με τη χρήση δορυφορικών δεδομένων υψηλής ανάλυσης και στη συνέχεια η παραγωγή διανυσματικών αρχείων φιλικών προς τους χρήστες και εμπλουτισμένων με περιγραφική πληροφορία. Έγινε επίσης μία αξιολόγηση της ποιότητας των τελικών προϊόντων και πως αυτά επηρεάζονται από τα χαρακτηριστικά των δεδομένων εισόδου.There are two novice needs that have been formulated after the growth of the forest areas that has been burnt during the last few years. Firstly, there is the need to manage the burnt areas immediately after the fire is extinguished. Secondly, it is highly important to come to a solution as far as it concerns the confrontation of the problem, involving the corporation of the Competent Body, in a national and a local scale. Both cases are common in the aspect of what is needed. That would be the existence of reliable data, descriptive and spatial as well. That goal can be achieved only by creating a spatial database, in which the boundaries of the burnt landscape, associated with qualitative and quantitative data will be inserted for each fire season. Traditional methods that have been used until nowadays by the national and the local services in charge lack of accuracy. Another disadvantage is the high cost and the delay in handing over the products, as these methods consume time. Remote sensing in conjunction with GIS can provide reliable products, low cost, immediately after a fire is extinguished. Most of the approaches though, that have been developed, require a high‐level trained staff. The aim of this project was the invention of an automated production process of tracking and identifying the burned areas using high resolution satellite data in a friendly to the users data format and an evaluation of the quality of the final product and how it is affected by the input EO data.
There are two novice needs that have been formulated after the growth of the forest areas that has been burnt during the last few years. Firstly, there is the need to manage the burnt areas immediately after the fire is extinguished. Secondly, it is highly important to come to a solution as far as it concerns the confrontation of the problem, involving the corporation of the Competent Body, in a national and a local scale. Both cases are common in the aspect of what is needed. That would be the existence of reliable data, descriptive and spatial as well. That goal can be achieved only by creating a spatial database, in which the boundaries of the burnt landscape, associated with qualitative and quantitative data will be inserted for each fire season. Traditional methods that have been used until nowadays by the national and the local services in charge lack of accuracy. Another disadvantage is the high cost and the delay in handing over the products, as these methods consume time. Remote sensing in conjunction with GIS can provide reliable products, low cost, immediately after a fire is extinguished. Most of the approaches though, that have been developed, require a high‐level trained staff. The aim of this project was the invention of an automated production process of tracking and identifying the burned areas using high resolution satellite data in a friendly to the users data format and an evaluation of the quality of the final product and how it is affected by the input EO data.