BASIC PRINCIPLES OF TWO‐DIMENSIONAL DIGITAL FILTERING*
作者:
W. G. CLEMENT,
期刊:
Geophysical Prospecting
(WILEY Available online 1973)
卷期:
Volume 21,
issue 1
页码: 125-145
ISSN:0016-8025
年代: 1973
DOI:10.1111/j.1365-2478.1973.tb00020.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
AbstractThe geophysicist involved in the analysis of two‐dimensional data should have an understanding of the two‐dimensional finite Fourier transform and the mechanics of two‐dimensional filtering. Frequency aliasing must be considered when working with sampled data. In two dimensions it is advantageous to consider aliasing in terms of the overlap of the repeating spectra inherent in the finite Fourier transform. Two‐dimensional filtering can be performed as a transient convolution in the space domain, as cyclic convolution utilizing the frequency domain or as the multiplication of polynomials using thez‐transform. If the “edge” effects are removed, the results of the three methods
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