US Patent 7617228 Displaying image data

A machine-readable definition of a three-dimensional scene is represented. A list of relationships between elements of the scene is generated, wherein each entry on said list identifies two elements and the nature of a relationship between the two elements. A displayable schematic representation of the scene is created in which elements of the scene are defined by nodes and relationships between the nodes are represented by links. Input data is received in response to displaying the list of relationships that identifies one of the relationships. A portion of the schematic representation is displayed showing the elements related by the relationship identified by the input data.