Download Advanced Holography - Metrology and Imaging by I. Naydenova PDF

By I. Naydenova

ISBN-10: 9533077298

ISBN-13: 9789533077291

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The standard deviations of the errors from the theoretical cubic curves are shown in Table 2 and Figure 11. The standard deviation changes according to the number n. 4 nm when n =16. The value becomes the minimum value of 680 pm when n =1024. It shows the proposed method 38 Advanced Holography – Metrology and Imaging provides very high-resolution measurement by selecting appropriate number n. The calculation time is, however, almost proportional to the number n as shown in Table 2 and Figure 13.

Trout ed. Proceeding SPIE Vol. 3638, pp. S. (2001). Schlieren and shadowgraph techniques, Springer-Verlag, Berlin Heidelberg New-York, ISBN 3-540-66155-7 Smeets, G. ((1975). Observational techniques related to differential interferometry, In: Proceeding of 11th International Congress on High Speed Photography, Chapman & Hall, UK, pp. , Fagot, H. & Albe, F. (1976). Application de l’holographie ultra rapide à référence arrière à l’étude de déformations dynamiques, Proceeding of the 12th International Congress of High Speed Photography, Toronto Surget, J.

Reconstructed image obtained by Windowed PSDH (a) n = 1 (b) n = 16 (c) n = 64 Fig. 10. 2 Effect of number of windowed holograms on accuracy and computation processing time The effect on accuracy by changing the number n of windowed holograms into 1, 4, 16, 64, 256, 1024, 4096, 14400, 25600 and 57600 is examined. Some reconstructed images obtained from each one of the windowed holograms are shown in Figure 9. When the number of windows becomes larger, that is, the window size becomes smaller, the speckle size becomes larger.

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