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Download e-book for iPad: Acoustical Imaging, Vol. 25 by Michael Halliwell, Peter N.T. Wells

By Michael Halliwell, Peter N.T. Wells

ISBN-10: 0306465167

ISBN-13: 9780306465161

ISBN-10: 0306471078

ISBN-13: 9780306471070

The foreign Symposium of Acoustical Imaging has been widely known because the most appropriate discussion board for displays of complicated study bring about either theoretical and experimental improvement. Held frequently on account that 1968, the symposium brings jointly foreign prime researchers within the region of acoustical imaging. The complaints from the twenty fifth assembly comprises articles at the following issues: arithmetic and Physics of Acoustical Imaging, Transducers and Arrays, Nondestructive overview, Geophysical and Underwater Ultrasonics, Microscopy and Microscanning, Scattering via Blood and Tissue, scientific and organic photo Formation, Tissue Characterization, Tissue and movement and Blood move, Elasticity Imaging, tough Tissues, and Novel and rising tools.

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Eng. BME-32: 521-9. , 1991, Improvement of lesion detection by echographic image processing; signal-to-noise ratio imaging, Ultrasonic Imag. 13: 238-51. , 1983, Statistics of speckle in ultrasound B-scans, IEEE Trans. Son. Ultrason. SU-30: 156-63. , 1986, Unified approach to the detection and classification of speckle texture in diagnostic ultrasound, Opt. Eng. 25: 738-42. , 1995, Quantitative assessment of myocardial ultrasound tissue characterization through receiver operating characteristic analysis of Baysian classifiers, J.

Org/. 31 This page intentionally left blank. O. Box 1080, Blindern N-0316 Oslo, Norway INTRODUCTION AND 1D FOURIER-BESSEL SERIES A method for modelling 2D arrays and computing their propagated fields in linear media will be discussed. The field computation technique represents an extension from recent 1D Fourier-Bessel modelling of annular array surface pressure profiles to the 2D Fourier-Bessel modelling of 2D arrays. For ease of discussion, the main principles of the technique will be discussed initially in terms of 1D Fourier-Bessel series and then extended to 2D series in the latter sections.

Further methods of second order statistics analysis have been taken from the general image processing literature. , 1973). e. 2-dimensional-) histogram approximating the probability of occurrence of all combinations of two grey levels for a set of two pixels at a certain spatial distance (or "pixel displacement"). Many parameters can be derived from this 21 matrix, some of which are often used in UTC: contrast, correlation, entropy and angular second moment (cf. , 1993; Valckx and Thijssen, 1997).

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Acoustical Imaging, Vol. 25 by Michael Halliwell, Peter N.T. Wells

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