Using MATLAB to create visuals

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A quick play with the awesome tformarray() function.

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I = checkerboard(100, 3);
v = 0;
j = 0;
k=2;
% locally varying with sinusoid
for i=1:1:800
 
[nrows,ncols] = size(I);
[xi,yi] = meshgrid(1:ncols,1:nrows);
a1 = i; % Try varying the amplitude of the sinusoids.
a2 = j;
imid = round(size(I,2)/2); % Find index of middle element
u = xi + a1*sin(pi*xi/imid)+ cos(i);
u = u+v - 250;
v = yi - a2*sin(pi*yi/imid) + sin(j+i);
tmap_B = cat(3,u,v);
resamp = makeresampler('linear','fill');
I_sinusoid = tformarray(I,[],resamp,[2 1],[1 2],[],tmap_B,.3);
 
imshow(I_sinusoid)
title('sinusoid')
  j=j-1;
  k = k/j;
end    


 

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