p305235/Phase_Unwrapping_Comparison
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MiriamLoecke
2023-07-12 11:36:04 +02:00
parent 1e5d1f3fe1
commit 5c1efe956f
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matlab_code/unwrap_comparison.m Normal file
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function [errors] = unwrap_comparison(file,t_end, noise_std_percent)
%unwraps a given file with all five methods (Temporal, 3D Laplacian, 4D
%Laplacian, Probability, OMME)
%always uses file with Venc 75 and Venc 150
%returns arrays of errors (as compared to OMME)
struct = load('path_to_data_file');
wrapped = struct.pca_p;
mask_struct = load('path_to_mask_file');
mask = mask_struct.labels;
si = size(wrapped);
si(3) = t_end;
phi = zeros(si(1), si(2), 1, si(3));
rng('default')
rng(100 + str2double(file{1}(2)))
noise_std = noise_std_percent * pi
noise = noise_std.*randn(si);
phi(:, :, 1, 1:si(3)) = (wrapped(:, :, 1:si(3)) + noise).*mask(1:si(1), 1:si(2), 1:si(3));
phi_wn = zeros(si(1), si(2), 1, si(3));
phi_wn(:, :, 1, 1:si(3)) = (wrapped(:, :, 1:si(3))).*mask(1:si(1), 1:si(2), 1:si(3));
phi = phi - 2*pi*(phi > pi);
phi = phi + 2*pi*(phi < -pi);
%%
%laplacian unwrap
n_u4 = unwrap_4D(phi);
lap4d_phi = phi + double(n_u4).*2*pi;
n_u3 = zeros(size(n_u4), 'int8');
for i=1:si(3)
n_u3(:, :, :, i) = unwrap_3D(phi(:, :, :, i));
end
lap3d_phi = phi + double(n_u3).*2*pi;
%%
%temporal unwrap
t_ref = t_end;
temp_phi = temporal(phi, t_ref);
%%
%probability unwrap
w_s = 1.0;
w_t = 2.5;
t_low = 0.32;
t_high = 0.75;
prob_phi = probability(phi, t_low, t_high, w_s, w_t);
%%
%omme
struct = load('path_to_higher_venc_data_file');
high_data = struct.pca_p;
high_venc = zeros(size(phi));
high_venc(:, :, 1, :) = (high_data(:, :, 1:si(3))).*mask(:, :, 1:si(3));
highv = 150;
lowv = 50;
high_venc = high_venc.*(highv/pi);
low_venc = phi_wn.*(lowv/pi);
[omme_v, dyn, conf, std] = omme([high_venc(:), low_venc(:)], [highv, lowv]);
omme_v = reshape(omme_v, [si(1), si(2), 1, si(3)]);
%%
%evaluate!
temp_v = temp_phi.*lowv/pi;
lap3d_v = lap3d_phi.*lowv/pi;
lap4d_v = lap4d_phi.*lowv/pi;
prob_v = prob_phi.*lowv/pi;
v = phi.*lowv/pi;
t = 1:si(3);
base_error = eval_error(v(:, :, 1, t), high_venc(:, :, 1, t));
t_error = eval_error(temp_v(:, :, 1, t), high_venc(:, :, 1, t));
l4_error = eval_error(lap4d_v(:, :, 1, t), high_venc(:, :, 1, t));
l3_error = eval_error(lap3d_v(:, :, 1, t), high_venc(:, :, 1, t));
prob_error = eval_error(prob_v(:, :, 1, t), high_venc(:, :, 1, t));
omme_error = eval_error(omme_v(:, :, 1, t), high_venc(:, :, 1, t));
errors = [base_error, t_error, l3_error, l4_error, prob_error, omme_error]
end