The Challenge

Professional VR users face several key challenges:

• Limited precision with traditional VR controllers

• Frequent switching between VR and desktop interfaces

• Lack of efficient tools for detailed manipulation

• Need for seamless 2D/3D transitions

Innovation

Developed a novel mouse-based interaction system for VR that enables:

• Precise object selection through ray-casting

• Seamless transitions between 2D and 3D interactions

• Intuitive depth control and rotation mechanisms

• Velocity-based scaling for multi-scale manipulation

Technical Solution

The system introduces several key innovations:

• Smart ray-casting technique that maps mouse movements to 3D space

• Automatic ray length adjustment based on scene collision

• Smooth transitions between 2D cursor and 3D ray modes

• Integration of scaled interaction techniques for enhanced precision

• Intelligent head movement compensation

Validation Through Research

Conducted two comprehensive user studies to validate the design:

Study 1: Core Interaction Performance

• Participants: 16 users

• Key Findings:

  • Superior accuracy in selection tasks compared to VR controllers

  • Higher throughput in precision-demanding scenarios

  • Better fine-grained control in object manipulation

  • High system usability scores (SUS > 80)

Study 2: Scaled Interaction Techniques

• Compared enhanced mouse system with Scaled HOMER technique

• Results demonstrated:

  • 30% faster task completion in rotation tasks

  • Superior accuracy in complex manipulation tasks

  • Maintained high precision while enabling rapid adjustments

  • Significantly higher user satisfaction ratings

Impact & Applications

The system proves particularly valuable for:

• Professional CAD and design applications

• Digital twin environments

• Precision training systems

• Data visualization and analysis

• Any scenario requiring frequent 2D/3D transitions

Key Achievements

• Developed an innovative VR interaction solution

• Demonstrated superior performance in precision tasks

• Created a more efficient workflow for professional VR applications

• Achieved significant user acceptance and satisfaction

• Advanced the field of VR interaction design

User Feedback

"The mouse-based system provided much better precision than I thought possible in VR." - Professional VR Developer

"Using the mouse for accurate operations felt more controlled and precise." - Study Participant