Photogrammetric Modelling of a Stone Bridge for Structural Analysis

Optimisation of camera positions for optical coordinate measurement based on visible point analysis

“…Optical coordinate measurement is becoming popular in manufacturing due to its non-contact nature, high point density, fast data acquisition rates, and relatively high measurement accuracy. With the decreasing prices of optical hardware, such as cameras and projectors, and a large number of complex measurement demands, optical coordinate measurement is used in a number of sectors, including aerospace [1], civil engineering [2], experimental solid mechanics [3] and additive manufacturing [4] A typical optical coordinate measurement procedure involves firmware setup, camera positioning, image acquisition, image processing, reconstruction and data analysis [5]. Although optical coordinate measurement has taken a market share in industrial inspection, the approach lacks an established and automated method for inspection planning; something that is common for contact coordinate measuring machines (CMMs) [6,7].…”