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authorleochanj <jbakita@cs.unc.edu>2020-10-21 01:52:54 -0400
committerleochanj <jbakita@cs.unc.edu>2020-10-21 15:59:54 -0400
commit0efc775370d2ff91927d1b383a99eab78dc5538f (patch)
treea41fe470fee5adc4d944ecd6b917bc48df8c7e0f /SD-VBS/benchmarks/texture_synthesis/src/matlab/ifftshift.m
parente2b50015cebdfba68699abd6e8575e38230f5a78 (diff)
debug libextra and remove matlab
FLUSH_CACHES
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diff --git a/SD-VBS/benchmarks/texture_synthesis/src/matlab/ifftshift.m b/SD-VBS/benchmarks/texture_synthesis/src/matlab/ifftshift.m
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1% [RES] = ifftshift (MTX)
2%
3% Inverse of MatLab's FFTSHIFT. That is,
4% ifftshift(fftshift(MTX)) = MTX
5% for any size MTX.
6
7% Eero Simoncelli, 2/97.
8
9function [res] = ifftshift(mtx)
10
11sz = size(mtx);
12DC = ceil((sz+1)./2); % location of DC term in a matlab fft.
13
14res = [mtx(DC(1):sz(1), DC(2):sz(2)) , mtx(DC(1):sz(1), 1:DC(2)-1); ...
15 mtx(1:DC(1)-1, DC(2):sz(2)) , mtx(1:DC(1)-1, 1:DC(2)-1)];