Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/5024
Title: Transformations for dimension reduction and expansion of the discrete Fourier transform under scanning
Authors: Margerum, Eugene A.
Keywords: Discrete fourier transform
Dimension reducing mapping
Image processing
Transfer function
Scanning
Publisher: U.S. Army Engineer Topographic Laboratories.
Engineer Research and Development Center (U.S.)
Series/Report no.: Research note (U.S. Army Engineer Topographic Laboratories) ; ETL-RN-74-3.
Description: Research note
Direct relationships arc developed between the discrete Fourier transform of a two-dimensional (rectangular) array and the discrete Fourier transform of the two-dimensional array formed by scanning the two-dimensional one. The forward and inverse relations both lake the form of suns involving certain coefficients which arc defined as a sum of complex exponential function. It is shown that these coefficients can be expresscd by a relatively simple formula. The method can be readily generalized for the reduction of dimension of transforms of arrays of higher dimensionality.
URI: http://hdl.handle.net/11681/5024
Appears in Collections:Documents

Files in This Item:
File Description SizeFormat 
ETL-RN-74-3.pdf508.11 kBAdobe PDFThumbnail
View/Open