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PC-based asymmetry analyzer for facial palsy study in uncontrolled environment: a preliminary study
MinJae Park1, JongMo Seo, KwangSuk Park
1Biomedical Engineering Major, Graduate School, Seoul National University, South Korea. MJ@ToTi.us
Computer Methods and Programs in Biomedicine
|March 20, 2010
Summary
We created a PC-based system for analyzing facial palsy asymmetry. This system enables frequent, objective measurements at home or in clinics, improving patient diagnosis and monitoring.
Area of Science:
- Biomedical Engineering
- Medical Imaging
- Rehabilitation Technology
Background:
- Facial palsy significantly impacts patients' quality of life.
- Objective and frequent assessment of facial asymmetry is crucial for effective treatment monitoring.
- Existing methods for assessing facial asymmetry can be time-consuming and subjective.
Purpose of the Study:
- To develop a PC-based quantitative asymmetry analyzing system for facial palsy patients.
- To maximize measurement opportunities and minimize measurement variation for frequent data collection.
- To enable objective and frequent monitoring of facial palsy progression.
Main Methods:
- Utilized DirectX technology for system development.
- Incorporated white balance correction for color distortion restoration.
- Employed lip segmentation (region growing) and point-tracking techniques for bilateral lip point analysis.
- Optimized tracking performance through configuration adjustments, including larger searching windows for improved robustness.
Main Results:
- The system effectively estimates the degree and pattern of asymmetry by tracking bilateral lip points.
- White balance correction proved effective in restoring color distortion.
- Lip segmentation demonstrated effectiveness in finding bilateral lip points, though with environmental limitations.
- Point-tracking provided temporal lip movement data, with larger tracking windows enhancing performance regarding variation and robustness during fast movements.
- Data transfer via FTP allows for remote clinician review and frequent patient monitoring.
Conclusions:
- The PC-based system facilitates frequent and objective measurements of facial asymmetry in patients with facial palsy.
- DirectX technology enables measurements in diverse locations, including home settings.
- The system supports frequent patient monitoring, leading to more accurate diagnosis and condition assessment.
- This technology offers a valuable tool for both clinical and at-home management of facial palsy.
