optical geometry

Many industrial applications require accurate and rapid measurement of the 3-D shapes of physical objects. Representative applications of 3-D shape measurement include mechanical reverse engineering, 3-D digital replication, and part inspection. Traditional 3-D measurement techniques, such as coordinate measurement machines (CMM) and laser scanning, provide high accuracy but are generally slow and expensive. In recent years, shape measurement based on digital fringe projection (SMDFP) has been developed for non-contact shape measurements. Systems based on SMDFP are promising due to low ...