Photogrammetry Applied to Small and Micro Scaled Objects: A Review

摘要: Digital close range photogrammetry as 3D optical measurement system has achieving a great success due to the several advantages which meet ever more complex market requests for free-form components. The capability of sensor be moved automatically around scene, varying distance from object and magnification ratio in single scanning session allows reconstruct model sample even presence undercuts or geometries. latter are typical most industrial sectors, e.g. automotive aerospace, biomedical sector, nature science, entomology, well cultural heritage archeologic field. Photogrammetry based scanners can designed simple, robust very cheap way, obtaining results similar expensive on other technologies. In last years, steps have been carried out consolidate metrologically characterize this methodology with final aim making it comparable ones already accepted. Although, there some relevant questions still represent criticalities technique.