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Related Experiment Videos

'Mouseyes': an aid to wound measurement using a computer

R J Taylor1

  • 1Department of Medical Physics, Salford Royal Hospitals NHS Trust.

Journal of Wound Care
|March 1, 1997
PubMed
Summary

This study validated the "Mouseyes" software for accurate image area and perimeter measurement. The system demonstrated reliable and reproducible results for irregular shapes, with accuracy improving for larger areas.

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Area of Science:

  • Medical Imaging Analysis
  • Computational Geometry
  • Digital Image Processing

Background:

  • Accurate measurement of irregular shapes is crucial in various scientific fields.
  • Existing methods may lack precision or reproducibility.
  • Development of user-friendly digital tools is needed.

Purpose of the Study:

  • To evaluate the accuracy and reproducibility of the 'Mouseyes' software for image area and perimeter length measurements.
  • To determine the influence of image size, perimeter length, and curvature on measurement accuracy.
  • To assess the reliability of a computer-assisted digitizing system.

Main Methods:

  • A custom software program, 'Mouseyes', was developed for image analysis.
  • Five volunteers digitized 12 shapes with known dimensions using a personal computer and mouse.
  • Measurements of area and perimeter were compared to true values to assess accuracy and variability.

Main Results:

  • Area measurement accuracy and reproducibility improved with increasing object size.
  • Digitized areas were calculated with a mean error of 1.3% or less.
  • The coefficient of variation for measurements was consistently below 2%, indicating high reproducibility.

Conclusions:

  • The 'Mouseyes' system provides a reliable, accurate, and reproducible method for measuring irregularly shaped areas.
  • The software is effective for quantifying linear dimensions from digital images.
  • Measurement precision is influenced by object size, with larger areas yielding better results.

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