An External Interface for Processing 3-D Holographic and - download pdf or read online

By Werner Jüptner, Thomas Kreis

ISBN-10: 3540508228

ISBN-13: 9783540508229

ISBN-10: 3642837131

ISBN-13: 9783642837135

Internationally well-known specialists within the box of holographic interferometric trying out, X-ray trying out, and structural research by means of finite point recommendations have come jointly in ESPRIT venture 898 to strengthen a procedure that integrates those options. the program acts as an exterior interface among the complementary nondestructive trying out equipment and desktop established structural research. within the e-book the trying out and research options are provided and in comparison with unique emphasis on difficulties relating to their mixture and integration. The structure and the parts of the interface method are defined. Experiments proving the feasibility and applicability of the thoughts are provided. The chapters of the ebook facing different strategies are written by means of the person companions of the venture. a standard try item is investigated by way of all innovations. The publication is helping the client to choose the trying out and research approach most fitted for his challenge. It additionally provides the historical past for build up built-in trying out apparatus for research and control.

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Extra resources for An External Interface for Processing 3-D Holographic and X-Ray Images

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If the target is near to a boundary and one of the four points is missing, then an extra point nally opposite the diago- missing point is used. If this point also is missing, we have a very narrow strip of the object and only the three points are used. If two of the four surrounding points are missing, say on the left, then the next two points along the right are used and the value obtained by trapolation. The ex- points used may again reduce to three, or even two, when necessary. 5 Data Format for Representation of Holographic Images The result of the analysis of our object by holographic methods is ray of an values representing the displacements at points of the object.

20) 14 (n,m) = A (n,m) + B (n,m) cos (l\'P(n,m) + 30:) Here a is the additional phase shift, nand m represent the pixel coordi- nates in the image processing system. For a known phase shift, the first three equations of Eq. 21) LJrp(n,m) is determined by 11 (n,m) - 212 (n,m) + la (n,m) If suffice. 23 ) intensi- proposed. The main advantage of this choice is the capability for noise suppression and elimination of distortions superior to the tensity-methods. Spurious motions three-in- of the object during recording, caused by insufficient vibration isolation, will result in extra phase shifts.

24) has to be constant over all (n,m), so we take an average over all a(n,m) calculated by Eq. 24). Extreme values may occur especially where the denominator is zero or near to zero: These outliers have to a, sin a, cos a, sin 2 a and cos 2 a are calculated and the inter ference phase LJI{J( n,m) is determined pointwisely by using the first three equations in Eq. 20) and second with the last three equations: be discarded before averaging. 26 ) pixel-coordinates (n,m) have been omitted. In Eq. 24) and Eq.

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An External Interface for Processing 3-D Holographic and X-Ray Images by Werner Jüptner, Thomas Kreis


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