Face 3D measurement by shadow moiré

Hearing impaired people lost their hearing ability. If they want to learn the verbal language, they should mimic teacher´s mouth shape to pronounce the words. Thus, in order to help hearing impaired learn speaking, this research applied a shadow Moiré method to build an optical measurement system without touching people´s face to measure the face-shaped contour for creating a 3D language tutor. A digital camera was used to capture the Moiré images through an image processing to get the texture of each contour line. Each correspondence value will make smooth contour interpolation and then three-dimensional image of face was plotted. This method for 3D measurement is simple and does not need an expensive measurement device to get precisely image information.