Requirements Analysis Document Augmented Reality Team Christopher Lee, Jeremy Jones, Michael Fortson Yik Lin Khoo, Leong Teo, Li Qiu Augmented Reality RAD

Current System No Augmented Reality Drawbacks Miniature Blueprints Grease Pencil Drawbacks Limited accuracy Limited amount of detail Augmented Reality RAD

Scenario An inspector puts on a Stars PEDD He turns on the PEDD and walks over to a damaged F-18 He stands at the nose cone of the plane He calibrates the wire-frame He begins his inspection of the plane Augmented Reality RAD

Proposed System User Interface Manager Calibration User Interface To manage and display the user interfaces of other subsystems Calibration User Interface An interface for calibrating the wire-frame overlay Device Drivers to Support I/O Devices Joystick, HMD, Positioning and Orientation Devices Event System To interpret low level events and dispatch them to the appropriate subsystems Augmented Reality RAD

Functional Requirements Manage the HMD Calibration of the wire-frame display Interpret low-level data from input devices Dispatch events to other subsystems Augmented Reality RAD

Hardware Considerations PEDD must be capable of running a JVM Java 3D OpenGL or DirectX required for Java 3D on the Windows 98 platform Positioning Device Data must be accurate within three inches for extensibility Orientation Device Sensitive enough to track head movement Augmented Reality RAD

Performance Characteristics Frame Rate Wire-frame updates must be smooth Input Devices Update in real-time to ensure accurate feedback Augmented Reality RAD

Error Handling and Extreme Conditions Bounds Checking Make sure information from input devices is valid Positioning or Orientation Device Failure Invokes a manual calibration mode PEDD Failure No persistent data, requires only a recalibration Augmented Reality RAD

System Interfacing Maintenance Modeling Request services of the UI Manager Receive input from our input device handlers Modeling Receive input from the input device handlers Augmented Reality RAD

System Modification New Input Devices Require New Events New Hardware Requires New Device Drivers Examples: Transparent HMD, more accurate positioning device User Interfaces May change with new technology requiring and update in the UI Manager Calibration May become fully automated with newer technology Augmented Reality RAD

Security Issues Augmented Reality has no risk of attack No persistent data No transmission to external systems Other Subsystems Authentication systems Implemented on systems containing protected data Augmented Reality RAD

Mockup UIs Wire-frame View Calibration UI Work Order UI IETM View Augmented Reality RAD

Class Diagram Augmented Reality RAD