Abstract
In recent years, a 3D printing attracts attention for the new three-dimensional technology. Although a CAD and CG areas are generally treated 3D data within a computer, there are no 3D data in the field of industrial products and medical treatments, such as a human body and a clay model. Three-dimensional profilometry by imaging technology is required in this field. It has features for non contact and non destructive so it has been researched and developed in not only universities but the industrial field. In this paper, we focus a confocal point method (focal method), a triangulation method, a light sectioning method, a stereo method, grating pattern projection method, and the time of flight method (TOF) as these typical techniques and reviewing a principle and discussing a future view of the 3D profilometry.
