Dear All,
I have a set of randomly spaced 2D data and would like to convert it into an image. I want to create an image whose intensity is 255 on the random points and zero elsewhere. I interpolate the data into a fine and evenly spaced grid (meshgrid format) using the following code but I failed. After I interpolate, the image is not an exact match or even close to the representation of random points. If you compare subplot(2,1,1) and subplot(2,1,2) in the following code, it can be seen that all the space between the random points gets 255. Is there a better way to convert the data to an image?
I would be grateful for any help.
Ahmad
L = 8;
H = 6;
n = 100;
x = rand( n, 1 )*L;
y = rand( n, 1 )*H;
intensity = ones(size(x))*255;
subplot( 2,1,1 )
plot( x, y, '.' )
[ X, Y ] = meshgrid( 0:0.01:L, 0:0.01:H );
F = TriScatteredInterp( x, y, intensity );
intensityInterp = F( X, Y );
subplot(2,1,2)
imshow( intensityInterp )
