頭部の三次元計測 : ダミーヘッド作成のための

概要

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A method is presented of describing numerically the three dimensional shape of human head. By making use of the method the statistics on the head shape are obtained in 52 male young adult Japanese. Contours of the head are drawn by an apparatus whose principle of operation is similar to that of the perigraph used in the craniometry. After the contours and the positions of reference points are processed by a digital computer, the head shape is represented in the spherical coordinate system UA(R, Θ, Φ) as well as the rectangular Cartesian coordinate system U(X, Y, Z) where the origin is at the midpoint of the right-and-left tragions, X-axis is passing through the tragions, Y-axis is on the Frankfort horizontal, and Z-axis is perpendicular to both X-axis and Y-axis. The statistics on the radius R in the direction with polar angle Θ and azimuth Φ at intervals of six degrees are obtained: the average, standard deviation, maximum, and minimum are shown. Finally, a method of generating a model head which may be used in the dummyhead-headphone system is described. The shape of the model head is based on the statistical values obtained.
社団法人日本音響学会の論文