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ICOP & ICPET 2015, 21 - : 1257-1260 Back to browse issues page
Suppression of twin image and noises in digital holography
Naser Partovi shabestari Engineer * 1, Mohammadreza Rashidian vaziri Doctor1, Eesa Alidokht Engineer1, Bahareh Zarefarsani Engineer1
1- Laser optics research school
Abstract:   (1675 Views)
Abstract: In numerically reconstructed images of digital holography the zero order diffraction, the complex conjugate image and experimental noises coexist with the real image of the object. These undesirable features not only reduce the quality of the reconstructed images, but also make it difficult to extract the invaluable information contained in the phase of the diffracted wavefront from the object surface. In this work, the mentioned undesirable features have been effectively removed by filtration of the CCD-recorded holographic pictures. To this end, 3×3 average filters and transparent filters have been used. These spatial and frequency filters should be chosen carefully and in accordance with the underlying physical relations for recording the holograms.
Keywords: : digital holography, Fourier optics, holographic interferometry, signal processing
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Type of Study: Research | Subject: Special
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partovi shabestari N, rashidian vaziri M, alidokht E, zarefarsani B. Suppression of twin image and noises in digital holography. ICOP & ICPET. 2015; 21 :1257-1260
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Volume 21 - Back to browse issues page
انجمن اپتیک و فوتونیک ایران Optics and Photonics Society of Iran
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