diff --git a/test/test_splinterpolator.cc b/test/test_splinterpolator.cc
index 76e9566f030d4a1e5a649fe377a43be700ab387c..44a39bbfbd3449b1a0d9afc032842e81351d002c 100644
--- a/test/test_splinterpolator.cc
+++ b/test/test_splinterpolator.cc
@@ -16,6 +16,7 @@ namespace fs = std::filesystem;
namespace BTF = boost::unit_test::framework;
namespace SPL = SPLINTERPOLATOR;
+
class TestFixture {
public:
@@ -56,10 +57,11 @@ public:
TestFixture() {
- // the data is up-sampled by 3x
- for (float z = -4; z < 9.01; z+=1/3.0) {
- for (float y = -4; y < 9.01; y+=1/3.0) {
- for (float x = -4; x < 9.01; x+=1/3.0) {
+ // the data is up-sampled by 3x and
+ // extrapolated x3 in all directions
+ for (float z = -8; z < 14.01; z+=1/3.0) {
+ for (float y = -8; y < 14.01; y+=1/3.0) {
+ for (float x = -8; x < 14.01; x+=1/3.0) {
if (std::abs(x) < 0.01) x = 0;
if (std::abs(y) < 0.01) y = 0;
if (std::abs(z) < 0.01) z = 0;
@@ -68,9 +70,9 @@ public:
zpts.push_back(z);
}}}
npts = xpts.size();
- xsz = 40;
- ysz = 40;
- zsz = 40;
+ xsz = 67;
+ ysz = 67;
+ zsz = 67;
// pre-allocate space to store test outputs
values = std::vector<float>(npts);
@@ -127,7 +129,6 @@ public:
}
compare(values, load_nifti(test_name + "_values.nii.gz"));
-
// derivatives are only valid for interpolation of order > 1
if (spl.Order() > 1) {
std::vector<float> gradvals;
@@ -143,6 +144,7 @@ public:
BOOST_FIXTURE_TEST_SUITE(test_splinterpolator, TestFixture)
+
BOOST_AUTO_TEST_CASE(order_1_3d_extrap_zeros) {
run_test(SPL::Splinterpolator<float>(data.data(), dims, SPL::Zeros, 1));
}
@@ -155,6 +157,37 @@ BOOST_AUTO_TEST_CASE(order_1_3d_extrap_constant) {
run_test(SPL::Splinterpolator<float>(data.data(), dims, SPL::Constant, 1));
}
+BOOST_AUTO_TEST_CASE(order_1_3d_extrap_mirror) {
+ run_test(SPL::Splinterpolator<float>(data.data(), dims, SPL::Mirror, 1));
+}
+
+BOOST_AUTO_TEST_CASE(order_1_3d_extrap_periodic) {
+ run_test(SPL::Splinterpolator<float>(data.data(), dims, SPL::Periodic, 1));
+}
+
+
+BOOST_AUTO_TEST_CASE(order_2_3d_extrap_zeros) {
+ run_test(SPL::Splinterpolator<float>(data.data(), dims, SPL::Zeros, 2));
+}
+
+BOOST_AUTO_TEST_CASE(order_2_3d_extrap_soft_zeros) {
+ run_test(SPL::Splinterpolator<float>(data.data(), dims, SPL::SoftZeros, 2));
+}
+
+BOOST_AUTO_TEST_CASE(order_2_3d_extrap_constant) {
+ run_test(SPL::Splinterpolator<float>(data.data(), dims, SPL::Constant, 2));
+}
+
+BOOST_AUTO_TEST_CASE(order_2_3d_extrap_mirror) {
+ run_test(SPL::Splinterpolator<float>(data.data(), dims, SPL::Mirror, 2));
+}
+
+BOOST_AUTO_TEST_CASE(order_2_3d_extrap_periodic) {
+ run_test(SPL::Splinterpolator<float>(data.data(), dims, SPL::Periodic, 2));
+}
+
+
+
BOOST_AUTO_TEST_CASE(order_3_3d_extrap_zeros) {
run_test(SPL::Splinterpolator<float>(data.data(), dims, SPL::Zeros, 3));
}
@@ -167,4 +200,13 @@ BOOST_AUTO_TEST_CASE(order_3_3d_extrap_constant) {
run_test(SPL::Splinterpolator<float>(data.data(), dims, SPL::Constant, 3));
}
+BOOST_AUTO_TEST_CASE(order_3_3d_extrap_mirror) {
+ run_test(SPL::Splinterpolator<float>(data.data(), dims, SPL::Mirror, 3));
+}
+
+BOOST_AUTO_TEST_CASE(order_3_3d_extrap_periodic) {
+ run_test(SPL::Splinterpolator<float>(data.data(), dims, SPL::Periodic, 3));
+}
+
+
BOOST_AUTO_TEST_SUITE_END()
diff --git a/test/test_splinterpolator/order_1_3d_extrap_constant_gradient.nii.gz b/test/test_splinterpolator/order_1_3d_extrap_constant_gradient.nii.gz
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--- /dev/null
+++ b/test/test_splinterpolator/order_1_3d_extrap_constant_gradient.nii.gz
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diff --git a/test/test_splinterpolator/order_1_3d_extrap_constant_values.nii.gz b/test/test_splinterpolator/order_1_3d_extrap_constant_values.nii.gz
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+++ b/test/test_splinterpolator/order_1_3d_extrap_constant_values.nii.gz
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new file mode 100644
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--- /dev/null
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new file mode 100644
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