Catálogo de publicaciones - libros

This paper presents a strategy of dynamic user modeling for sketch-based user interface. A user model is defined as an incremental decision tree for a specific user. A drawing style modeling process is designed to model user’s temporal drawing performances among inputting strokes, and to predict the possible shape in term of fuzzy matching. A user mediation process is proposed based on relevance feedback to capture users’ drawing intentions and refine the recognition results. Experiments prove efficiency of the method.

A multi-modal Virtual Environment that provides human-scale haptic feedback is described. User’s immersion is achieved using a large rear-projected stereoscopic screen, a 5.1 audio system, and fan-based olfactory displays. An educational Virtual Reality application that allows students to experiment the electron bound state in the Bohr atom model and the quantification of the energy levels through the haptic channel, is presented. This application can be run in both immersive and desktop configurations including haptic interaction, ranging from pseudo-haptic illusion to human-scale haptic immersion.

To quantify the regularity of state updates, the concept of Irregular Degree was introduced. Two experiments corresponding to four different filtering policies were designed. In the first experiment three filtering policies based on Irregular Degree were compared. In the second experiment, the filtering policy achieving the best task performance in the first experiment was selected to compare with other filtering policies. The results of the first experiment indicate that the stability of state updates per second is a more important impact factor than Irregular Degree on the task performance. The results of the second experiment indicate that corresponding to different state updates per second, the filtering policies can achieve different task performance.

In this paper, we present novel systems supporting remote interactions between humans and also between humans and animals. We developed interfaces which supports non-verbal modes of communication. We introduce the Poultry.Internet system, a remote multi-modal human-pet interaction system. This system allows humans to remotely touch their pet using a system interconnected through the Internet. We also present the Internet.Pajama, a wearable suit which allows parents to interact with their child. The aim of the system is to allow parents to hug their child while they are not at home.

A MPEG-7 based multimedia retrieval system for digital museum is introduced in this paper. The system utilizes description tools standardized in MPEG-7, like color and shape descriptors and simple semantic annotations, to support image retrieval. The implementation also exploits eXist, a native xml database system with XQuery support to manage and query the MPEG-7 meta data. Two query methods are supported: Query-By-Example(QBE) and Query-By-Keyword(QBK). This system is integrated into SDU-ADM, Archaeological Digital Museum of Shandong University.

A project named ”Virtual Museum Net of Magna Graecia” is presented, whose objective is to provide an unitary image of the archaeological heritage of Calabria (a Southern Italian region), through Computer Technology, Multimedia Designing and Virtual Reconstructions. The project aims to encourage the technological transfer of the most advanced researches in the exploitation and conservation sector of the Cultural Heritage. The ”Virtual Museum Net of Magna Graecia” project is included in the context of Knowledge Media Design for Museums. This project links the museum scenery and multimedia, in order to use technology as system of representation.

More and more attention is paid to Game-based Learning at present. In this paper, the design and development of a teacher’s tool in game-based learning system was introduced. The teacher’s tool has two main functions. Firstly, teacher can use the tool to trace students’ learning activity on-line and interact real-time with students, such as providing help, scaffold and encouragement etc. Secondly, teachers can design new plots according to students’ study schedule and integrate the content of courses in it, which can give teachers full play to the leading role of instruction. The second function also has a good effect on integrating the game and education.

The development status about digitalized protection of cultural relic and virtual museum construction has been introduced. The key technology of digitalized protection for cultural relic and virtual museum construction has been expatiated. The application of stereo photography and virtual reality technology in digitalized protection of cultural relic and virtual museum construction has been shown. The principle of stereo display has been explained in detail. The key technical problem of virtual reality used in digitalized protection of cultural relic has been expounded, including several important aspects such as 3D scanning and modeling for cultural relic, texture mapping of virtual cultural relic, technology of human-machine interaction to the virtual museum scene, etc. The problem about the mode of management, maintenance and working on virtual museum has been also introduced in this paper.

In this paper, we propose a new shape feature for shape-similarity search of 3D polygonal-mesh models in digital museum. The shape feature is an extension of the D2 shape functions proposed by Osada. Our proposed shape feature is a combination of geometry and texture which is also invariant to similarity transformation. Experiments showed that, our method achieved better performance improvement especially for appearance retrieval of 3d model.

This study proposes a scheme to integrate several types of media elements into a multimedia framework, which plays media on a same platform without distinct players. This investigation is well-suited for multimedia applications such as the distance learning and digital library. However, the varied media elements put together and played on a same platform are great challenges. This study employs MPEG-21 digital item standard to achieve this target, makes varied multimedia exist on a browser interface, and solves the problem of different players playing different media. Moreover, this study exploits XML and Digital Item Declaration Language (DIDL) functions to construct a Digital Media System (DMS). The DMS puts separate videos, audios, images, and text media sources into a trailer. Users select and play the trailer using web-based interface to achieve on demand playing. Finally, we demonstrate that the proposed system is resilient on multimedia applications and very suitable for distance learning systems.