?? eed.m
字號:
function R = eed( L, k, uscale, stepsize, nosteps, verbose )
% eed: edge enhancing diffusion
if verbose
figure(verbose);
subplot(1,2,1); imshow(L); title('Original Image'); drawnow;
end
R = L;
for i = 1:nosteps
Rx = gD( R, uscale, 1, 0 );
Ry = gD( R, uscale, 0, 1 );
Rw2 = Rx.^2 + Ry.^2;
Rw = sqrt(Rw2);
c2 = exp( - (Rw / k).^2 );
c1 = 1/5 * c2;
a = (c1 .* Rx.^2 + c2 .* Ry.^2) ./ (Rw2+eps);
b = (c2-c1) .* Rx .* Ry ./ (Rw2+eps);
c = (c1 .* Ry.^2 + c2 .* Rx.^2) ./ (Rw2+eps);
R = R + stepsize * tnldStep( R, a, b, c );
if verbose
figure(verbose);
subplot(1,2,2); imshow(R);
title('Edge Enhancing Diffusion'); drawnow;
end
end
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