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A protocol for validating anthropometric accuracy of computer manikins using a boundary family was proposed. Three commercial computer manikin systems were validated by this method, and errors were calculated for 4 dimensions (thumb tip reach, dactylion height, dactylion height, overhead and span) measured on 9 representative body forms. The validation protocol was applicable to all three systems. Results were reproducible, and the operation was not difficult. Whereas, definitions of measurements used to generate a body form in the software were unclear. The number of errors (race × representative body forms × measurements) to be evaluated may be large, but visualization and statistics can help in understanding the results.

In order to create digital models representing the variation in hands of adult Japanese, 82 measurements were taken for 103 subjects using traditional methods. Factor analysis of the measurements was performed, and the first 2 factors were used to calculate measurements for 9 members of the boundary family. A 3D digital model was created for each family member by deforming a generic model by minimizing the total difference of 40 measurements between the generic model and the target hand model. The generic model with 36 degrees of freedom was created from medical images of a subject captured in 4 different posture.