Tympanic membrane shape determined by moiré topography
نویسندگان
چکیده
منابع مشابه
Moiré topography.
Contour moiré pictures with good contrast of a full size living body are now available. Construction problems, performance, and accuracy of large instruments are experimentally studied. Techniques to minimize the drawbacks of the moiré contouring are developed. The system has been proved to be ready for practical application to full size living bodies.
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Moiré topography has the advantage of requiring only a single image to obtain a three-dimensional measurement, but it cannot discern the fringe order. Because there is an ambiguity problem when calculating the depth range by use of fringe intensity or phase unwrapping, it is impossible to obtain an absolute phase and an absolute depth range. It is therefore difficult to discern the relation bet...
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A new method of moiré topography is suggested in which a slit beam is used in a scanning mode to generate moiré fringes. One remarkable feature of this method is that, as opposed to existing shadow and projection types, height differences between two consecutive fringes become constant so that absolute fringe orders need not be identified. This advantage makes it possible to measure three-dimen...
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1 Post-doctoral degree in Thoracic Surgery (Coordinator of Education and Research at the Getúlio Vargas University Hospital). 2 MSc in ENT (Head of the ENT Service at the Getúlio Vargas University Hospital). 3 MSc in ENT (Assistant Physician at the Getúlio Vargas University Hospital). 4 PhD in Heart Surgery (Head of the Thoracic Surgery Service at the Getúlio Vargas University Hospital). 5 ENT ...
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The Drosophila wing consists of a transparent wing membrane supported by a network of wing veins. Previously, we have shown that the wing membrane cuticle is not flat but is organized into ridges that are the equivalent of one wing epithelial cell in width and multiple cells in length. These cuticle ridges have an anteroposterior orientation in the anterior wing and a proximodistal orientation ...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1975
ISSN: 0001-4966
DOI: 10.1121/1.1995400