segmentation / ivote3

Authored by Laila Saadatifard 2015-10-09 09:47:20 -0500

1 parent da849ea2

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matlab-3d/blue.bmp 0 → 100644

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matlab-3d/gauss1d.m 0 → 100644

	1	+%This function creates a 1D gaussian window given a standard deviation
	2	+
	3	+function G = gauss1d(sigma)
	4	+
	5	+
	6	+ % create a kernel with a radius equal to 4x sigma
	7	+ r = sigma * 4;
	8	+
	9	+ % create the domain of the gaussian function (x and y)
	10	+ gx = -r:r;
	11	+ % calculate the gaussian function
	12	+ a = 1/(sqrt(2pi)sigma);
	13	+ b = -1/(2*sigma^2);
	14	+ cx = gx.^2;
	15	+ G = a.exp(b.cx);
0	16	\ No newline at end of file
...	...

matlab-3d/gauss_blur3d.m 0 → 100644

	1	+function Ib = gauss_blur3d(I, sigma)
	2	+
	3	+
	4	+%convolve along the x-axis
	5	+Gx = gauss1d(sigma(1));
	6	+Ix = convn(I, Gx, 'same');
	7	+
	8	+%convolve along the y-axis
	9	+Gy = gauss1d(sigma(2))';
	10	+Iy = convn(Ix, Gy, 'same');
	11	+
	12	+%convolve along the z-axis
	13	+Gz_prime = gauss1d(sigma(3));
	14	+Gz = reshape(Gz_prime, [1, 1, length(Gz_prime)]);
	15	+Iz = convn(Iy, Gz, 'same');
	16	+
	17	+Ib = Iz;
	18	+
	19	+
...	...