Thanks, First of all I would like to thanks to Robert Gittins and Karen Padmore for give me the oportunitu to presetn our work in the virtual recontrution ot the portico de la gloria.
It was one of the most important Christian pilgrimages
Santiago de Compostela, a city in Galicia, at north-west of Spain. It is a famous Christian pilgrim’s spot since the Middle Ages for the Santiago Rout. One distinctive element of the liturgy of the cathedral is the use of a giant censer called “O Botafumeiro”. Like another censer it was basically used for the hygienic reason . its weight is around 53 kilograms and height is around 150 cm. The Botafumerio is tied to a rope that hangs from the centre of the arms of the cathedral, and it is pulled through the transept of the cathedral describing, basically, in a pendulum movement. The rope is around 20m and the speed of the movement can be around 70km/h
Tiraboleiro: is a latin word that mean producer-carrier the censer. In our case “Os Tiraboleiros” is a team of 12 men who pulls the supporting rope of the botafumeiro in a pumping cycle. This pumping process transforms the pendulum motion into variable length pendulum motion increasing the energy of the system in every cycle, and therefore the angle of oscillation. The team is leadered and coordinated by the Tiraboleiros Chef Armando Raposo The chef mark when the team must pull up and down the censer.
In this video shows the botafumerio working. At the present time, the chief of the Tiraboleiros starts the liturgy pushing the Botafumeiro to its initial oscillation (13º approximately) From that moment, the Tiraboleiros increase the energy cyclically by increasing and decreasing the length of the rope at the highest and lowest points of oscillation. There are severe curiosities about the botafumeiro, like the rope brook when the Queen Catalina de Aragon visited the Cathedral or the botafumeiro was stolen by Napoleon and so on.
The goal of this work is to develop a simulator of this liturgy where the users can be a virtual tiraboleiros . The simulator has solve two main issues : One is the Visualization of the environment of the cathedral and the censer and the other is the hand interaction with it. These problems can be subdivided in: Solving the physical dynamics of the Botafumerio. The visualization of a virtual model of the Cathedral of Santiago Developing an interface (HCI) to simulate the pumping process of the tiraboleiros
Mathematically The movement of the botafumeniro is a Pumpig parametric amplification of a pendulum movement. It presents nolinear equation with a complex analytical solution obtained its first aproximation the last century. The “traditional resolution” is obtained by observation and maximize the energy transfer to the censer. In this way The censer can be pull to a maximun angle of 82 degress in 17 pumping cycles The mathematical solution has this form. And if we analyzed the equation the mathematical pumping process is the same than the obtained by tradition.
The visualization system is a Nave architecture or a Cave like system architecure. NAVE is a three-screen environment. The screens are positioned at 120 of angles to each other, producing a three-sided display area. The user is positioned in the pumping place. The scene is generated by a cluster of three PC’s in a server/client architecture. The image for each screen (three) is generated on a PC and projected. One of th PC´s called the server, coordinates the system, and management of the interface with the user.
The software used is a custom engine called LAB is support opengl2.1 and DirectX 9. The catedral model is developed by blue prinsts and digital pictures in a model of 1 million of poligons with a 1Gb of texture. The smoke of the censer has been developed by a especiar shader.
The interface has to support more than 50.000 visitors per year. For this reason we choose an industrial hydraulic system. It allows that four users pull the ropes together like the tiraboleiros team. (Here we have the Rector of the University with the Head of the Galician autonomy governement.)
Básicamente tener en cuenta que va a estar expuesto en un museo lo que implica -que lo va a manipular mucha gente -que debe de atraer a la gente nada mas verlo -que debe mantener la atención de la gente -que debe de ser un elemento para mostrar las características del conjunto escultórico desde un punto de vista didáctico pero exacto
"Botafumeiro and Portico de la Gloria" virtual; Enhancement of the Cultural Heritage by Interactive Applications
“Botafumeiro and Portico de la Gloria” virtual; Enhancement of the cultural heritage by interactive applications Julián Flores Instituto de Investigaciones Tecnológicas Universidad de Santiago de Compostela. Julian.firstname.lastname@example.org
Santiago de Compostela 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)
I Index Botafumeiro Tradition Interactive visualization system. Portico de la Gloria Portico de la Gloria Instruments of the Portico
“O Botafumerio” 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
“Os Tiraboleiros” 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 .
“Virtual Simulation” 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
Dynamic of the botafumeiroPumping 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
Visualization System NAVE architecture 3 Screens (12m2) ○ 1 center y 2 sizes with 120º ○ 1024x768 Resolution ○ Stereoscopic Passive vision Coordinates by a cluster of 3 PCs ○ 2 Graphics client ○ 1 Host/client Graphic Management the interface Sound Coordinate the system HARDWARE 3 PC´s Estándar Core 2 Duo T6400 1GB RAM NVIDIA GFORCE 7600GT PCI Express 256 RAM
Graphics Engine •SOFTWARE- LAB Engine • OpenGL 2.1 • Direct X 9.0c• 3D The model • 1.000.000 of Triangles • 1GB of textures • Smoke of the censer. Particle system running in the GPU
Interface 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
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 tospread the importance of the conservation of the culturalheritage focus on the Portico. Technology of Information andcommunication. • Portico virtual • Instruments of the portico VR.
Application has to show:Meaning of the Pórtico • Importance and artistic value • Heritage conservation awareness • Supplement InformationFor 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..
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.
Architecture Sistema deDistributed Computing (Client-Server) Visualización (Servidor)•Client • Application "Display“ Sistema de • Image Generation Control•Server (Cliente) • 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 #
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