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Towards a new format for image coding

AAOur aim is the coding of image with XML text, the decoding of such descriptors and the reconstruction of the corresponding shapes. The image is assumed segmented into regions and each one is considered as shape. We present firstly a review of the textual format (LWDOS: Language for Writing Descriptors of Outline Shapes) proposed in the literature to write the geometrical description of parts and separating lines obtained by shape decomposition. In this paper we propose an XML format for writing these descriptors. and an algorithm for shape reconstruction from its descriptor. We show also how to use this result for image reconstruction. Our approach has been implemented and the obtained results encourage us to improve them in order to succeed to an XML format for image coding.