Miguel Dias

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This paper presents the usability evaluation results of Mix It, a test bed for authoring in Mixed Reality Environments. While augmented and mixed reality interfaces have been around for a few years, considerable work needs to be done in usability assessment of novel interaction techniques for augmented environments. We have conducted usability evaluations(More)
The DRM interoperability problem is a very complex problem. Even big software companies have already admitted that DRM as it is today is too complex – complex for end-users, complex for content providers and complex for content handling devices manufactures. There are different approaches to deal with this problem and there are different levels to address(More)
The treatment of craniofacial defects can present many challenges due to the variety of tissue-specific requirements and the complexity of anatomical structures in that region. 3D-printing technologies provide clinicians, engineers and scientists with the ability to create patient-specific solutions for craniofacial defects. Currently, there are three key(More)
One of the most important trends in the present day computing model is the service oriented approach to the distribution of applications and services over the Internet. The paradigm model behind the Service Oriented Architecture (SOA) encompasses the possibility to potentially have completely heterogeneous application architecture in which each of the(More)
This paper presents the main characteristics of the traditional Pinscreen, the way it works, its problems and results achieved. The first Digital Pinscreen system is presented, along with its main characteristics and limitations. The rest of the paper describes and presents the DigitalPinDirector: a system that enables a full and true creative access to the(More)
—Immersive multi-projection environments are becoming affordable for many research centers, but these solutions needs several integration steps to be fully operational, and some of these steps are difficult and not in a common domain. This paper presents the most recent techniques involved in multi-projection solutions, from projection to computer cluster(More)