Virtual Human Model for UI Usability Simulation

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Solution Overview

Problem

Conventional user interface design and evaluation methods lack efficiency and reliability, particularly in considering user participation and variability in physical interaction conditions, leading to limited usability evaluation and slow development of new interface apparatuses.

Innovation Solution

A user interface design and evaluation system that includes a user interface design unit, human model design unit, prototype simulation unit, and usability evaluation unit, which simulates user interactions and evaluates usability through motion properties and feedback data to optimize interface design for various user environments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional user interface design methods are used, then design process is simple, but usability evaluation reliability is limited

Engineering Contradiction:
Improveusability evaluation reliabilityVSAvoidevaluation system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent creates a virtual copy of the user interface and a virtual human model to simulate interactions. Instead of conducting repeated physical experiments with real users, the system generates a digital replica of the UI prototype and simulates user interactions using a virtual human model with anatomically correct hand structures, thereby improving evaluation reliability while reducing the need for complex physical testing infrastructure.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent replaces physical mechanical interaction systems with a computer-based simulation system. The virtual human model uses computational algorithms to simulate hand movements, finger joint rotations, and interaction forces, substituting physical experiment equipment and human subjects with software-based models that provide more consistent and reliable evaluation results.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If physical experiments with multiple experimentees are conducted, then objective usability data is obtained, but time consumption and cost increase

Engineering Contradiction:
Improvedesign development efficiencyVSAvoidevaluation time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent performs preliminary actions by creating a virtual human model with pre-defined anatomical parameters, hand structures, and movement capabilities before conducting usability evaluations. The system pre-configures finger joint rotations, hand postures, and interaction mechanics, allowing multiple UI prototypes to be evaluated using the same prepared model, thereby significantly reducing the time required for each subsequent evaluation compared to recruiting and training new human experimentees.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent uses a virtual copy of the human hand and interaction processes to replace physical experiments. The virtual human model can be reused indefinitely across multiple evaluation scenarios without additional time or cost, whereas physical experiments with human subjects require repeated recruitment, setup, and execution for each new UI prototype evaluation.

Inventive Principle:
Principle #26Copying

3Adaptability or versatility

If standardized evaluation processes are implemented, then evaluation consistency is improved, but adaptability to various user environments decreases

Engineering Contradiction:
Improveenvironmental adaptabilityVSAvoidsystem configuration complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent implements a dynamic virtual human model system where anatomical parameters, hand sizes, finger lengths, and movement ranges can be adjusted to match different user characteristics and environmental conditions. The simulation environment adapts to various UI configurations, device types, and usage scenarios by modifying model parameters programmatically, providing both consistency through standardized evaluation procedures and adaptability through configurable parameters without requiring complex physical reconfiguration.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS7464010B2User interface design and evaluation system and hand interaction based user interface design and evaluation system
Publication Date: 2008.12.09 ELECTRONICS & TELECOMM RES INST
  • US7464010B2 patent drawing
  • US7464010B2 patent drawing
  • US7464010B2 patent drawing

AI summary

A user interface design and evaluation system and a hand-interaction-based user interface design and evaluation system are provided. The user interface design and evaluation system includes: a user interface design unit, a human model interaction design unit, a user interface prototype simulation unit, a human model simulation unit, and a user interface evaluation unit. In order to develop a user interface in consideration of usability of a user, the system provides a usability evaluation feedback system performing optimization of an interface design based on a motion simulation of a body model and user interface model. Through this, an optimum interface design is derived and by reducing the initial usage difficulty of the new interface for a user, the user can easily use the new interface and work performance of the user can be enhanced. In addition, by supporting fast prototyping and evaluation in a new product development stage, efficient production of a product having a short life cycle can be actively implemented.