適合メガネフレーム開発を目的とした3次元顔形状分類(1部 生体計測)
スポンサーリンク
概要
- 論文の詳細を見る
The aim of this study was to develop new eyeglass frames that fit well on most of the target population, using our original analysis method for three-dimensional human body forms. The facial region for eyeglass frame design was from below the nose (subnasal area) to above the brow in the vertical direction, and from the tip of the nose (pronasal area) to the back of the ear in the anteroposterior direction. Face forms of 56 Japanese males were captured as plaster models because it was necessary to obtain the complete surface form, including the back of the ear. The face was represented as a three-dimensional shape model consisting of 211 data points (366 polygons) based on 61 landmarks. These landmarks were defined by anatomical/anthropological information and industrial design information for fitting eyeglass frames. Shape distances among individuals were calculated from the models for 56×56 pairs. A shape distribution map was calculated by analyzing the distance matrix using a multidimensional scaling method. The first dimension was interpreted to represent the depth of the face and the nose bridge, and the second dimension was related to the breadth of the face, height of the orbit, height of the nose, and facial flatness. Japanese male faces were classified into four groups based on the distribution map for purposes of the marketing, and the average face form was calculated for each of the four groups. A new eyeglass frame was designed by CAD to fit each of the imported average face forms. Prototype eyeglass frames were adjusted using the actual average face models with a special soft material attached to the regions around the nose bridge and the upper ear base. These actual average face models were developed from the physical average forms using laser lithography. The soft material, made of urethane foam and silicone skin, had material properties very close to those of the human skin. A fitting test of the new eyeglass frames was conducted for 38 male subjects. The four types of new eyeglass frames and one conventional frame were used for the experiment. Each subject put on the frames in random order and made a sensory evaluation of the fit of each frame. The compression force of the temple of the frame and the relative movements between the eyeglass frame and the face were measured for each frame. As a result, it was confirmed that the new eyeglass frame of the correct type for each subject was designed for small compression force (half of the conventional level) and minimal slip. The score for fitting comfort was highest for the new frame of the correct type, as selected theoretically. Subjects who had larger (broader or deeper) faces and usually wore eyeglasses, however, tended to prefer a tighter frame to the new frame of the correct type.
- 2002-06-25
著者
-
河内 まき子
(独)産業技術総合研究所デジタルヒューマン研究センター
-
持丸 正明
産業技術総合研究所デジタルヒューマン研究センター
-
河内 まき子
産業技術総合研究所デジタルヒューマン研究センター
-
河内 まき子
産業技術総合研究所 デジタルヒューマン研究センター
-
持丸 正明
産業技術総合研 デジタルヒューマン研究セ
関連論文
- 並進と回転の衝撃をうける頭部の応答と形状個体差の影響
- 並進と回転の衝撃をうける頭部の応答と形状個体差の影響
- 一人称ビジョンシステムのための自己位置推定法 (医用画像)
- 一人称ビジョンシステムのための自己位置推定法 (画像工学)
- からだつきの違いによる動きの男女差 (特集 パフォーマンスの男女差)
- 解剖学的構造としわを手がかりとした手部寸法の画像計測
- パンチルトカメラにより自動追跡撮影された顔画像列からの3次元顔形状復元(卒論セッション・概要発表)
- D-12-48 解剖学的データベースを用いたパンチルトカメラ画像群からの3次元顔形状復元(D-12. パターン認識・メディア理解,一般セッション)
- 627 年齢別子ども転倒シミュレータを用いた遊具緩衝面の頭部防護効果の評価(OS7:ヒューマンダイナミクス)
- 年齢別子ども転倒シミュレータによる遊具の転倒傷害危険度の可視化