By I. Naydenova
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Additional info for Advanced Holography - Metrology and Imaging
The time exposure (750 ns) of each interferogram is given by a small window size inside the camera and the number of recorded interferograms is about 220. The images are 8x10mm² in size and they are digitalized with a SONY 325P video camera through a Matrox image processing board. Several movies have been recorded with uniform background colour (infinite fringes), circular and narrowed fringes (finite fringes). As the optical setup is very sensitive to external vibrations, the uniform background colour is difficult to adjust when the wind tunnel is running, but the fringe formation can be observed on the hologram surface so that it is possible to adjust the uniform background colour with the wind tunnel operating.
2000). 29, pp. J. W. (2001). 30, pp. , Minchev, G. & Sainov, V. (2009). Basic Holographic Characteristics of a Panchromatic Light Sensitive Material for Reflective Autostereoscopic 3D Display, EURASIP Journal on Advances in Signal Processing, Vol. 2009, Article ID 217341 Philbert, M. (1958). 65, pp. K. (1994). , Skokov, G. & Grichine, M. (1999). J. 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.
In the same n, the standard deviation is the minimum when m is 2, that is, when the weight is proportional to the intensity of the complex amplitude. It is appropriate to adopt m=2 as the weight of averaging. The minimum standard deviation of errors is 88 pico-meters when n=1024 and m=2. 67 Table 1. Relationship between number of windows and standard deviation of errors 36 Advanced Holography – Metrology and Imaging Fig. 6. Relationship between number of windows and standard deviation of errors Fig.
Advanced Holography - Metrology and Imaging by I. Naydenova