The context of a collective activity is characterized by all information produced during the activity. The comprehension of this context by each actor is essential for the success...
With powerful computer and mighty software, seasoned users could turn digital media into what they want. The detection of digital tampering has become a crucial problem. In most o...
Shading has a great impact to the human perception of 3D objects. Thus, in order to create or to deform a 3D object, it seems natural to manipulate its perceived shading. This pape...
Volumetric displays provide interesting opportunities and challenges for 3D interaction and visualization, particularly when used in a highly interactive manner. We explore this a...
Long transactions cause pragmatic problems for workflow systems – as the transaction is moving, so is the surrounding world. We look at three scenarios in which external events ...