Evanthia Mitsou

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This paper presents a model for assessing watermark quality with regard to fidelity. The model can be applied for assessing the quality of watermarks as well as investigating the effect of attacks on watermarked images. The proposed model is based on image properties as perceived by the human eye and attempts to provide algorithmic measurements that(More)
This paper presents the architecture, design, functionalities and services of a web-based system named “Delivery Supporting Environment for Learning Material” (DSELM) which was used for the pilot distribution of learning material to students of the “Introduction to Computer Science” module of the Computer Science Course at the Hellenic Open University. The(More)
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