| Project/Area Number |
26670843
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Prosthodontics/ Dental materials science and
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| Research Institution | Meikai University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
INO Teruo 明海大学, 歯学部, 准教授 (70146215)
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| Research Collaborator |
TESHIGAWARA Daisuke
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 汎用デジタルカメラ / 顔面形状計測 / エピテーゼ / ノイズ除去 / Stereolithography / エピポーラ平面 / 三角測量法 / 輝度値 / 顔面計測 / 受動型ステレオ法 / 色調補正 / STLファイル |
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| Outline of Final Research Achievements |
Three-dimensional (3D) measuring system has been recently developed to measure distances in remote locations. To apply this system to facial measurement, the following were investigated. A pair of stereo images of a stone facial model and a wax facial prosthesis was photographed using a general-purpose digital camera. Then, a 3D point cloud dataset of the object was constructed using space measurement software. A noise removing procedure using the down sampling of digital color information allowed for data smoothing. Results were as follows: 1) The highest precision of the measurement was achieved with a 60cm measurement distance. The relative error was 1.30%. 2) The correction with light intensity detection allowed to detect more microstructures. It is considered that light intensity is related to the actual irregularity of objects. The correction using color information to lessen noise on a point group may be valid for facial measurements.
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