The analysis accuracy assessment of CORINE Land CoverIn the Iberian Coast

摘要

Corine land cover 2000 (CLC2000) is a project jointly managed by the Joint Research Centre (JRC) and the EuropeanEnvironment Agency (EEA). Its aim is to update the Corine land cover database in Europe for the year 2000. Landsat-7Enhanced Thematic Mapper (ETM) satellite images were used for the update and were acquired within the framework ofthe Image2000 project. Knowledge of the land status through the use of mapping CORINE Land Cover is of greatimportance to study of interaction land cover and land use categories in Europe scale. This paper presents the accuracyassessment methodology designed and implemented to validate the Iberian Coast CORINE Land Cover 2000cartography. It presents an implementation of a new methodological concept for land cover data production, Object-Based classification, and automatic generalization to assess the thematic accuracy of CLC2000 by means of anindependent data source based on the comparison of the land cover database with reference data derived from visualinterpretation of high resolution satellite imageries for sample areas. In our case study, the existing Object-Basedclassifications are supported with digital maps and attribute databases. According to the quality tests performed, wecomputed the overall accuracy, and Kappa Coefficient.We will focus on the development of a methodology based on classification and generalization analysis for built-up areasthat may improve the investigation. This study can be divided in these fundamental steps: ·Extract artificial areas from land use Classifications based on Land-sat and Spot images.·Manuel interpretation for high resolution of multispectral images.·Determine the homogeneity of artificial areas by generalization process.·Overall accuracy, Kappa Coefficient and Special grid (fishnet) test for quality test.Finally, this paper will concentrate to illustrate the precise accuracy of CORINE dataset based on the above generalsteps.