Reliability of External Ear Measurements Obtained by Direct, Photocopier Scanning and Photo Anthropometry

  • Liu, Bor-Shong (Department of Industrial Engineering and Management St. John's University) ;
  • Tseng, Hsien-Yu (Department of Industrial Engineering and Management St. John's University) ;
  • Chia, Tung-Chung (Department of Business Administration Ling Tung University)
  • Received : 2009.06.12
  • Accepted : 2010.01.18
  • Published : 2010.03.01


The purpose of this study was to compare the consistency of external ear measurements obtained by electronic digital caliper, photocopier scanning and digital photographic methods. Photogrammetric measurements were made after image editing software was used to optimize the brightness, contrast, size and image clarity. The CorelDRAW dimension tool was used to create a dimension line that measured the vertical and horizontal length between any two landmarks. Results of repeated measures analysis of variance revealed no significant differences in length and width of the pinna between the three methods. The reliability of the three measurement techniques showed a high degree of consistency. Further study and efforts could be extended to measurement hands, foots and facial dimensions by present techniques.


Anthropometry;Ear Dimensions;Reliability;Photogrammetry;Intra-Class Correlation Coefficient


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