Title :
Resolution limit and iterative enhancement algorithms for tomographic acoustic microscopy
Author :
Kent, S. Davis ; Lee, Hua
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA
Abstract :
The scanning tomographic acoustic microscope (STAM) is an advanced device capable of performing subsurface three-dimensional imaging of microscopic specimens. The resolution limits of this microscope in both range and cross-range are established using the spectral coverage technique. It is shown that the range resolution is a function of the acoustic wavelength, and the cross-range resolution is weakly dependent on the operating frequency. Experimental results are compared to theoretical values with complete agreement. Iterative algorithms for image enhancement are also examined. These algorithms are applied to experimental data to demonstrate their effectiveness.
Keywords :
acoustic microscopes; acoustic microscopy; acoustic tomography; image enhancement; image resolution; iterative methods; spectral analysis; acoustic wavelength; cross-range resolution; experimental data; experimental results; image enhancement; iterative enhancement algorithms; microscopic specimens; operating frequency; range resolution; resolution limit; scanning tomographic acoustic microscope; spectral coverage technique; subsurface three-dimensional imaging; tomographic acoustic microscopy; Acoustic devices; Acoustic imaging; Acoustic waves; Energy resolution; Frequency; Image reconstruction; Iterative algorithms; Microscopy; Signal resolution; Tomography;
Conference_Titel :
Signals, Systems and Computers, 1996. Conference Record of the Thirtieth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-8186-7646-9
DOI :
10.1109/ACSSC.1996.601068
