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The Enhancement of the Acoustic Image by Combining Bases of Support for SFR (Spatial Frequency Response)  

Song, Dae-Geon (경원전문대학 전자정보과)
Oh, Tong-In (경희대학교 한방시스템공학과)
Kim, Hyun (부천대학 컴퓨터제어과)
Jun, Kye-Suk (경희대학교 전자공학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.22, no.5, 2003 , pp. 408-417 More about this Journal
Abstract
In this paper, we have studied the enhancement of the acoustic image by combining bases of support for SFR (Spatial Frequency Response) taken at multi-frequencies. The scanning acoustic microscope system have been constructed using the quadrature detector that is able to measure the amplitude and phase of the reflected signal simultaneously. Both real and quadrature components of reflected signal have been acquired at 4.4 ㎒ to 5.6 ㎒ reliably and accurately. In this experimental result, better depth resolution can be obtained by numerically combining images taken at several different frequencies. Image intensity have been better about 3.4 times at multi-frequency than one at a single frequency.
Keywords
Point spread function; Image resolution; Depth resolution; Image intensity;
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