Modeling 3D Digital City

How Yogya Virtual City which embedded with its collective memory will be modeled ?

The success of a VR model depends on the balance point between the speed, detail and sense of presence (Chan & Weng, 2005)
- Architectural and Urban Data Collection
- Digital Model Creation
- PC file to VR conversion and evaluation

Characteristics of Urban Models (Day, 2005)
- Accuracy : geometrical precision to which the model has been constructed and is determined by the surveying methods employed (is it accurate or approximate ?)
- Realism : a measure of how convincing the model looks and depends on the level of detail and the way in which the colours, textures and lighting have been applied (is it realistic or abstract?)
- Interactivity : Refers to the ease with which one can move through and manipulate a model. This is affected by its size and complexity and by the way in which it has been treated in terms of colour, texture and lighting (is it interactive or static ?)

Several Methods of developing a digital city (Chan, 2005)
- complete a large scale of physical model, then apply a 3D scanner to convert the scanning result into digital model (Blundell, Williams and Lintonbon, 1999).
- apply photorealistic imaging techniques to photograph the buildings and convert them to digital models for the city of London.
- apply laser scanner to scan urban platform for land exploration.
- apply maps, architectural floor plan drawings, elevation drawings, aerial photos, and street photos as reference for generating computer models in 3D modeling system.