RelicCARD:Enhancing cultural relics exploration through semantics-based augmented reality tangible interaction design

Cultural relics visualization brings digital archives of relics to broader audiences in many applications,such as education,historical research,and virtual museums.However,previous research mainly focused on modeling and rendering the relics.While enhancing accessibility,these techniques still provide limited ability to improve user engagement.In this paper,we introduce RelicCARD,a semantics-based augmented reality(AR)tangible interaction design for exploring cultural relics.Our design uses an easily available tangible interface to encourage the users to interact with a large collection of relics.The tangible interface allows users to explore,select,and arrange relics to form customized scenes.To guide the design of the interface,we formalize a design space by connecting the semantics in relics,the tangible interaction patterns,and the exploration tasks.We realize the design space as a tangible interactive prototype and examine its feasibility and effectiveness using multiple case studies and an expert evaluation.Finally,we discuss the findings in the evaluation and future directions to improve the design and implementation of the interactive design space.

Using relief texture for interactive and tangible virtual environments

This paper first introduces a way to improve interactivity with high polygon count virtual objects through the "mixed" use of image-based representation within one object. That is, both 3D polygonal and image-based representations are maintained for an object, and switched for rendering depending on the functional requirement of the object. Furthermore, in order to reduce the popping effect and provide smooth and gradual transition during the object representation switch, the object is subdivided with the subdivided parts possibly represented differently, i.e., using 3D models or images. As for the image-based representation, the relief texture (RT) method is used. In particular, through the use of the mixed representation, a new way called TangibleScreen is pro-posed to provide object tangibility by associating the image-based representation with a physical prop (projecting the RTs) in a selective and flexible way. Overall, the proposed method provides a way to maintain an interactive frame rate with selective perceptual details in a large-scale virtual environment, while allowing the user to interact with virtual objects in a tangible way.

Supporting flexible regulation of crisis management by means of situated artificial institution

This paper highlights the use of situated artificial institution(SAI) within a hybrid, interactive,normative multi-agent system to regulate human collaboration in crisis management. Norms regulate the actions of human actors based on the dynamics of the environment in which they are situated. This dynamics results from both environment evolution and actors' actions. Our objective is to situate norms in the environment in order to provide a context-aware crisis regulation. However, this coupling must be a loose one to keep both levels independent and easyto-change in order to face the complex and changing crisis situations. To that aim, we introduce a constitutive level between environmental and normative states providing a loose coupling of normative regulation with environment evolution. Norms are thus no more referring to environmental facts but to status functions, i.e., the institutional interpretation of environmental facts through constitutive rules. We present how this declarative and distinct SAI modelling succeeds in managing the crisis with a context-aware crisis regulation.