Julián FloresInstituto de Investigaciones TecnológicasUniversidad de Santiago de Compostela.

Julian.flores@usc.es

““Botafumeiro and Portico de la Gloria” virtual;Botafumeiro and Portico de la Gloria” virtual;

Enhancement of the cultural heritage by Enhancement of the cultural heritage by interactive applicationsinteractive applications

Way of St. James. The Cathedral of Santiago.

Top for the Spanish/European Romanesque Art One distinctive element of the liturgy is the use of a giant censer

called “O Botafumerio”

Its main element is Portico de la Gloria (1188)

Santiago de Compostela

I

Botafumeiro Tradition Interactive visualization system.

Portico de la Gloria Portico de la Gloria Instruments of the Portico

Index

It is singular in the Christian liturgy. Giant censer “O Botafumeiro”

○ M = 53 Kg○ h = 150 cm

It is tied to a rope that hangs from the centre of the transept of the arms of the cathedral.

○ L = 20 m

it is pulled through the transept of the cathedral, basically describing a pendulum movement.

○ V=70km/h

“O Botafumerio”

Tiraboleiro: From Latin Turifer-Turibulum, producer-carrier the censer.

A team of 12 men called “Os Tiraboleiros” pulls the supporting rope in a pumping cycle in order to increase the energy of the system and, consequently, the angle of oscillation.

The team is guided by the Tiraboleiros leader; Armando Raposo .

“Os Tiraboleiros”

Our goal is to develop a simulator of the liturgy of the botafumeiro. In the simulator the user will take the role of the Tiraboleiros.

Visualization and interaction Solving the dynamics of the Botafumerio. Visualization of a virtual model of the Cathedral of Santiago Developing an interface (HCI) to simulate the pumping process of the

tiraboleiros

“Virtual Simulation”

Pumping parametric amplification of a pendulum movement.

No-lineal equation Complex analytical resolution Numerical Methods (century XX)

The “traditional solution” is obtained by observation. The traditional pumping process maximize the energy transfer to the censer .

The number of pumping cycles is 17 for a 82º of angle.

Mathematical solution

Dynamic of the botafumeiro

NAVE architecture 3 Screens (12m2)

○ 1 center y 2 sizes with 120º○ 1024x768 Resolution ○ Stereoscopic Passive vision

Coordinates by a cluster of 3 PC's○ 2 Graphics client ○ 1 Host/client Graphic

Management the interface Sound Coordinate the system

HARDWARE3 PC´s EstándarCore 2 Duo T6400 1GB RAMNVIDIA GFORCE 7600GT PCI Express 256 RAM

Visualization System

• 3D The model• 1.000.000 of Triangles• 1GB of textures• Smoke of the censer. Particle system running in the GPU

•SOFTWARE- LAB Engine• OpenGL 2.1• Direct X 9.0c

Graphics Engine

It has to be used by more than 50.000 users per year

Industrial interface

Elements:

○ Four ropes 4.○ Hydraulic pumping system. ○ Pumping sensor.○ Acquisition system-Pc

Interface

Virtual Show-Video

I

Botafumeiro Tradition Interactive visualization system.

Portico de la Gloria Portico de la Gloria Instruments of the Portico

Index

Pór tico and Instruments.

18m*11m

Plan of Restauration:

Restoration plan was designed and coordinate by:• Fundación Barrie• Cabildo de la Cathedral• Ministerio de Cultura.

The project try to develop an set of applications which help to spread the importance of the conservation of the cultural heritage focus on the Portico. Technology of Information and communication.

• Portico virtual• Instruments of the portico VR.

Application has to show:

Meaning of the Pórtico• Importance and artistic value• Heritage conservation awareness • Supplement Information

For user• Guided support system• Used by the museum staff.• Usable by any user• Cathedral Museum (Santiago Cathedral Crypt)

•Application: Content Creation

• 3D model (Starting point)• Laser Scanning (University of Cottbus)• NO color information• Simplification and optimization of the original geometric mesh• Order of magnitude (points) i ~ 1.5x108 9x106

• Textured work• Photographic Study of the Portico de la Gloria• 1 TB of documentation• Inclusion of Relevant Information• Result of new research• Overlays, texture transitions, audio, etc..

Malla Original LoD 70%

LEVEL OF DETAIL

Comparación Real - VirtualComparación Real - Virtual

Application information summary:

•11 are established areas of interest, historical or Cultural significance

•The application users can view and explore demand• Speech relating to each of the zones.

• Significance of each area, historical Considerations• Conservation and restoration of the monument

• Content "dynamic“. According to advance the work of restoration and conservation, the new information obtained will be phased in gradually implementing

•Two ways to "visit“.• The user can explore at will the various points of interest• Automatic Mode is touring all areas of interest while listening to

a continuous speech.• Visit "on-rails". Video capture of the automatic touring.

Shell of Information:Shell of Information:• PolychromicPolychromic

Sistema de Visualización

(Servidor)

Sistema de Control

(Cliente)

Architecture

Distributed Computing (Client-Server)

•Client• Application "Display“• Image Generation

•Server• Control Application • Control System• Customer

•Application: Software Design-Client

•Display• Dynamic camera• Allows wide range of perspectives• Animations generated in real time for transitions between

points of interest•In each area of interest trigger "special events":

• Computer graphics, highlight some element of the monument, etc.

• Transition between current and original state polychrome•LoD System / Dynamic Load

• Textures•Open Source Tools

• Ogre3D

Application: Software Design-Server

•Application "System Control“• Touch interface

• Intuitive•Sound management of the application

• Language Selection• 5 Languages

•Visiting Mode Selection• Interactive / Auto

•Control point of view• Zoom• Orbital Camera

•Developed with Microsoft tools• WPF (Windows Presentation Foundation)• .Net Framework 4.0• XAML / C #

Video Pórtico

Instruments of the por tico VR.

Intuitive way of working Focused on non-experts Accessible to users that are unfamiliar with

new technologies

Attractive presentation Intended for public exhibition in a museum

Robust The materials must be robust and not easily

breakable as they are intended to be handled by many people

Use of a tangible interface “The most intuitive way of handling an object is

actually handle it with our hands” The user manipulates an object and its virtual

representation is moved in line with the movement of the real object that the user is handling.

Prototypes WIImote Augmented Reality patterns

○ A cube with patterns in each face○ One pattern interface

Only one pattern Reduces occlusion problems Easier to operate

Tangible interface: Disk with an attached pattern Circular shape, similar to

the Pórtico one. Easy to manipulate Avoids occluding the pattern

with the fingers while

manipulating

Two modules application Pattern detection

○ Captures the webcam image○ Finds the pattern within the

image and computes its geometric transformations

Information display○ Displays 3D models○ Plays the right sound for each

moment in the presentation○ Controls the application logic

Elder/instrument selection mode Allows to travel along the tympanum

and select de elder/instrument to visualize

Instruments visualization mode Visualization of the instrument while you

listen an explanation about how the instrument was and how it was reconstructed

Language selection mode You can choose between 5 different

languages General explanation mode

Shows the 24 Elder in their positions and plays a explanation of the museum, the restoration and the Pórtico de la Gloria itself.

Constructed from sketches, drawings and pictures of the real reconstructions by López Calo

Video Instrumentos

Results-Conclusion•High number of visitor

•+160.000 visitors during 2010

•Great perception

•Users

•Museum staff

•New Installations

•Berlin (Instituto Cervantes)

•La Coruña (Foundation Barrie).

•Lisboa