A SYSTEM FOR DIGITAL RECONSTRUCTION OF GYPSUM DENTAL CASTS

A range scanner is developed that can scan a gypsum dental cast and re construct the cast digitally for display and storage purposes. The sca nner is based on subtractive Light and computes the range values using optical triangulation. A fiducial marker is introduced that, when att ached to a dental cast at the time of image acquisition, makes it poss ible to integrate multiview range images of the cast without image reg istration. A method for calibrating the scanner is described and exper imental results showing the accuracy of the scanner are presented.