Catálogo de publicaciones - libros

Augmented Reality (AR) is a technology that merges real-world images with computer-generated virtual objects, superimposes the virtual objects upon the real world, and exhibits them in the view of the users. Mechanical maintenance and repair tasks in industrial environments are prospective domains for AR applications. In this paper a prototype of AR system for training and assisting in maintaining equipment (PC) is presented. The key hardware feature of the system is a binocular video see-through Head Mounted Display (HMD), which presents the augmented reality to the users; the tracking system, which gives the position and orientation of equipment using ARToolKit; and a laptop PC for the platform of the whole application. The design and architecture of this system is described. Experimental results are finally presented.

In this paper an interactive 3D virtual amusement land supporting user’s interactivity with various virtual contents is presented for increasing reality and immersion of a virtual park. Most existing 2D amusement contents provide less interactivity and reality than the proposed one does. This method enables users to navigate virtual space actively and to experience virtual contents on real-time rendering.

This study was done to explore the effects of video printer technology on young children’s episodic memory. Five-year-old children were found to increase their memory of episodic events if they segmented the event into small units by video printer. But, seven-year-old children could not have any benefits of memory by using it. The discussion of these results will given on the topic of developmental differences of encoding strategies and the effects of video printer on memory.

This paper investigates the perception of expressiveness in storytelling. The aim is to establish a typology by identifying in a first step different perceived expressive forms. Two perceptive tests, a listening and a reading test, have been set up using a free semantic verbalization method. In particular, we focused on the influence of verbal and non verbal information on the perception of expressive types. From a detailed analysis of the listening test answers we distinguished between three situational categories of expressiveness specific to storytelling (emotions, emotional attitudes and means of expression). A comparison of the data collected in both tests has yielded different cues that seem to have been interpreted as expressing surprise, fear and sadness.

In this paper we present a new computational framework of affective-cognitive learning and decision making for affective agents, inspired by human learning and recent neuroscience and psychology. In the proposed framework ‘internal reward from cognition and emotion’ and ‘external reward from the external world’ serve as motivation in learning and decision making. We construct this model, integrating affect and cognition, with the aim of enabling machines to make smarter and more human-like decisions for better human-machine interactions.

The construction of memory and its mechanism is very important to develop the efficient intelligent system. We designed a flexible Intelligent capsule for efficient data mining. The episode memory and its association are specially designed. The proposed knowledge capsule has a hierarchical structure and many functions of selection, learning,storing and data extraction. Based on this knowledge structure, it has a flexible memory and reactive level extraction mechanism. We constructed event oriented virtual memory and tested learning and associative knowledge retrieval function with virtual memory.

Reticular Activating system which has a form of small neural networks in the brain is closely related system with the automatic nervous system. It takes charge of the function that distinguishes between memorizing one and the others, accepts the only selected information and discards the unnecessary things.In this paper, we propose Reticular Activating system which has Knowledge acquisition, selection, storing, reconfiguration and retrieving part. In this paper, On/Off Switching mechanism for flexible memory is specially designed and tested.

Affective technologies have potential to enhance human-computer interaction (HCI). The problem is that much development is technically, rather than user driven, raising many unanswered questions about user preferences and opening new areas for research. People naturally incorporate emotional messages during interpersonal communication with other people, but their use of holistic communication including emotional displays during HCI has not been widely reported. Using Wizard-of-Oz (WOZ) methods, experimental design and methods of sequential analysis from the social sciences, we have recorded, analyzed and compared emotional displays of participants during interaction with an apparently affective system and a standard, non-affective version. During interaction, participants portray extremely varied, sometimes intense, ever-changing displays of emotions and these are rated as significantly more positive in the affective computer condition and as significantly more intense in the told affective condition. We also discuss behavioural responses to the different conditions. These results are relevant to the design of future affective systems.

This paper proposes an alternative paradigm for building affective competencies in embodied conversational agents (ECAs). The key feature of this approach – and the reason for referring to it as an alternative paradigm – entails use of hybrid ECAs that are expressive both autonomously and as pass-through proxies for human communications. The context in which this hybrid ECA paradigm is currently under investigation involves animated pedagogical agents. Other domains for which ECAs are under current and envisioned use, however, such as medical interviews, may also be appropriate for their application. One critical research question involves testing the conjecture that human affect shared through an agent reverberates to or scaffolds the empathic credibility, trustworthiness or effectiveness of the agent when it is functioning autonomously.

This paper describes a pipeline by which facial expression and eye-gaze of the user are tracked, and then 3D facial animation is synthesized in the remote place based upon timing information of the facial and eye movement information. The system first detects a facial area within the given image and then classifies its facial expression into 7 emotional weightings. Such weighting information, transmitted to the PDA via a mobile network, is used for non-photorealistic facial expression animation. It turns out that facial expression animation using emotional curves is more effective in expressing the timing of an expression comparing to the linear interpolation method. The emotional avatar embedded on a mobile platform has some potential in conveying emotion between peoples via Internet.