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The Measurement of Three-dimensional Deformation with Digital Holography

Author: YanFei
Tutor: WangWenSheng
School: Changchun University of Science and Technology
Course: Instrument Science and Technology
Keywords: Digital holography Double Exposure interference Image Hologram Fresnel holography
CLC: O438.1
Type: Master's thesis
Year: 2011
Downloads: 62
Quote: 0
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Abstract


Digital holography by modern sensor technology and computer technology into holography the holographic process digitized and opened up broad prospects for the development and application of holographic interferometry measurement technology . In this thesis, the double exposure method to interfere with the image plane hologram , the Fresnel holographic combining the measurement of the deformation of the object . Double exposure holographic interferometry first exposure record the hologram object deformation before the second exposure recorded hologram deformation of an object , the two hologram figures superimposed by computer , then programmed the digital reproduction can be obtained before and after deformation of the object the lightwave interference fringes of the two objects , by interpretation of the interference fringes can be calculated out of the shape of the object variables . Digital reproduction technology experimental conditions can not limit , anywhere digital reproduction of recorded digital hologram , experimental research has brought great convenience . In this paper, CCD recording element , digital holographic reproduction hologram acquisition by digital image processing technology filtering , to improve the clarity of the image by computer simulation . The Fresnel hologram obtain relatively clear of interference fringes, calculated out of the shape of the object variables .

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CLC: > Mathematical sciences and chemical > Physics > Optics > Information Optics > Holographic optical
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