Worlds of Homogeneous Artifacts

An Efficient Curvelet Framework for Denoising Images

Wiener filter suppresses noise efficiently. However, it makes the out image blurred. Curvelet preserves the edges of natural images perfectly, but, it produces visual distortion artifacts and fuzzy edges to the restored image, especially in homogeneous regions of images. In this paper, a new image denoising framework based on Curvelet transform and wiener filter is proposed, which can stop nois...

Epidemic spreading and cooperation dynamics on homogeneous small-world networks.

We introduce a class of small-world networks--homogeneous small-worlds--which, in contrast with the well-known Watts-Strogatz small-worlds, exhibit a homogeneous connectivity distribution, in the sense that all nodes have the same number of connections. This feature allows the investigation of pure small-world effects, detached from any associated heterogeneity. Furthermore, we use at profit th...

Bridging and Breakdowns - Using computational artifacts across social worlds

Enhancing Semantic and Social Navigation in Information-Rich Virtual Worlds

Virtual Worlds are a popular medium for communication and collaboration in 3D and they are being utilized as shared information spaces in various application areas, such as education, culture and entertainment. Being presented as 3D visualization spaces they adopt a spatial model of navigation, in which information artifacts have a certain position in space and users can access them through the...

Building Emotional Artifacts in Social Worlds: Challenges and Perspectives

This paper discusses ideas relative to the construction of emotional artifacts that have to interact in a social world, and in particular with humans. It first examines some of the ways in which emotions can enhance social interactions with artifacts, and some of the challenges posed to the designer. After considering the debate that opposes “shallow” versus “deep” modeling, it sketches some wa...