Chau, Fook S.Ng, Tuck-WahMECHANICAL & PRODUCTION ENGINEERING2014-06-192014-06-191993Chau, Fook S., Ng, Tuck-Wah (1993). Determining the optimum image recording conditions in shearography based on spatial frequency considerations. Proceedings of SPIE - The International Society for Optical Engineering 1821 : 15-26. ScholarBank@NUS Repository.08194102250277786Xhttps://scholarbank.nus.edu.sg/handle/10635/74981The transmission function of a double-exposure shearing specklegram consists of fringe- bearing and non-fringe bearing components. To obtain interference fringes, spatial filtering is performed on the processed specklegram to allow only the fringe-bearing components to pass. The spatial frequency for filtering is often determined on a trial-and-error basis. In this paper, a technique is presented to obtain a spectral distribution from which the optimum spatial filtering frequency can be deduced. Knowledge of the optimum spatial filtering frequency to recording aperture relationship enables better selection of image recording conditions.Conference PaperNOT_IN_WOS