Cristina Portalés

Integration of TLS Data and Non-metric Imagery to Improve Photo Models and Recording - A Case Study on Djin Block No. 9, Petra (Jordan)

In this paper we present a methodology to accurately derive 3D photo models of a World Heritage monument by means of terrestrial laser scanning (TLS) and close range photogrammetry. TLS will provide 3D point clouds as well as rough photo models that can substantially be improved draping texture with external imagery. The tomb Djin Block No. 9 in Petra is used to compare texture results delivered by the camera of the terrestrial laser scanner versus an external off-the-shelf digital camera. The issue of image resection and calibration of non-metric single imagery is tackled making use of a digital surface model. The presented approach is suitable for off-the-self digital cameras and can cope with single images without overlap. Results show that it is possible, on the one hand, to enhance photo models draping external imagery onto the 3D model, and on the other, to take advantage of single non-metric images to record cultural heritage.

Sonic Gestures Applied to a Percussive Dialogue in TanGram Using Wii Remotes

TanGram, is an original music score composed by Carlos D. Perales for Percussion Quartet and Nintendo Wii Remotes used as a wireless interface for Live Electronics. This paper examines how this composition explores exiting research in interaction and communication between instruments and digital sound processing discourse to produce a unique music mixed-media score, to explore the sonic possibilities of a multi-timbrical instrument with the integration of the visual gestures of an accessible device using processes of real-time gestural mimesis.

Exploring social, cultural and pedagogical issuesin AR-gaming through the live lego house

Live LEGO House (LLH) is an interactive Augmented Reality (AR) environment to explore coexistence and multicultural factors through gaming. The system consists basically of a physical/real house built with the LEGO blocks, which is enriched with different non-physical/virtual multimedia files (sounds, videos and 3D animations), insisting in social, cultural and pedagogical issues that the AR technology can bring for children. Tactile, visual and auditory stimuli are present at the game.

Back to the 70's

Back to the 70s is an augmented reality application, designed to deliver the Vera University campus back to the city centre as it was 30 years ago. Within this, the user is immersed in a new hypothetical environment where the campus buildings are seen together with some historical ones belonging to Valencia City. This paper describes the methodologies followed to deal with the occlusion problem via a conjunction of 3D objects acting as a subtracting models, and the acquisition of the user orientation inside the application, which is achieved via a combination of a visual and an inertial tracker.

Sound and Movement Visualization in the AR-Jazz Scenario

This paper describes AR-Jazz, an augmented reality application designed to visualize sound and movements in live jazz performances. The augmented scenario is achieved within the program Max MSP Jitter, with an integrated inertial sensor and a microphone. As a display, a cinema screen is used. The application was first shown at the SedaJazz Festival 2007 in Valencia (Spain). In first place, a workshop was made in order the musicians to become familiar with the application. Secondly, a live performance was shown. The experience is described in this paper.

The private city through the hot images

Hot Images is an artistic mixed reality application that deals with the relation between human beings and city environments, thus proposing a novel cartography and navigation tool for the city. Within the virtual recreated environment of the Hot Images, the inert city is closed to the human field, transforming the cold aspect of the city into the hotness of the close friends and relatives. The user is carrying a laptop where a 3D virtual model of the city is presented within a blue color. Some images of past events related to the user are hidden in the city, and s/he has to find them. As the user gets closer to the images locations, the environment changes to red color. Once the user arrives to a location, s/he can catch some images that will appear mapped on some of the buildings facades, thus changing the aspect of the city. The location of the user is achieved with a combination of a GPS and an inertial sensor. The interface is done with the Max/MSP Jitter software.