COMPMID-586: Port LaplacianPyramid to new validation
Change-Id: Ic746d5f297eb354e63cefa8c682b03fc339be81d
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/128409
Reviewed-by: Pablo Tello <pablo.tello@arm.com>
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: John Richardson <john.richardson@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
diff --git a/tests/Utils.h b/tests/Utils.h
index 7d960dd..d0eebb1 100644
--- a/tests/Utils.h
+++ b/tests/Utils.h
@@ -306,6 +306,38 @@
return valid_region;
}
+/** Create a valid region for Laplacian Pyramid based on tensor shape and valid region at level "i - 1" and border mode
+ *
+ * @note The border size is 2 in case of Laplacian Pyramid
+ *
+ * @param[in] a_shape Shape used at level "i - 1" of Laplacian Pyramid
+ * @param[in] a_valid_region Valid region used at level "i - 1" of Laplacian Pyramid
+ * @param[in] border_undefined (Optional) Boolean indicating if the border mode is undefined.
+ *
+ * return The valid region for the level "i" of Laplacian Pyramid
+ */
+inline ValidRegion shape_to_valid_region_laplacian_pyramid(const TensorShape &a_shape, const ValidRegion &a_valid_region, bool border_undefined = false)
+{
+ ValidRegion valid_region = shape_to_valid_region_gaussian_pyramid_half(a_shape, a_valid_region, border_undefined);
+
+ if(border_undefined)
+ {
+ const BorderSize gaussian5x5_border(2);
+
+ auto border_left = static_cast<int>(gaussian5x5_border.left);
+ auto border_right = static_cast<int>(gaussian5x5_border.right);
+ auto border_top = static_cast<int>(gaussian5x5_border.top);
+ auto border_bottom = static_cast<int>(gaussian5x5_border.bottom);
+
+ valid_region.anchor.set(0, valid_region.anchor[0] + border_left);
+ valid_region.anchor.set(1, valid_region.anchor[1] + border_top);
+ valid_region.shape.set(0, std::max(0, static_cast<int>(valid_region.shape[0]) - border_right - border_left));
+ valid_region.shape.set(1, std::max(0, static_cast<int>(valid_region.shape[1]) - border_top - border_bottom));
+ }
+
+ return valid_region;
+}
+
/** Write the value after casting the pointer according to @p data_type.
*
* @warning The type of the value must match the specified data type.
diff --git a/tests/validation/CL/LaplacianPyramid.cpp b/tests/validation/CL/LaplacianPyramid.cpp
new file mode 100644
index 0000000..960dcee
--- /dev/null
+++ b/tests/validation/CL/LaplacianPyramid.cpp
@@ -0,0 +1,143 @@
+/*
+ * Copyright (c) 2018 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+*/
+#include "arm_compute/core/Types.h"
+#include "arm_compute/runtime/CL/CLPyramid.h"
+#include "arm_compute/runtime/CL/CLTensor.h"
+#include "arm_compute/runtime/CL/CLTensorAllocator.h"
+#include "arm_compute/runtime/CL/functions/CLLaplacianPyramid.h"
+#include "tests/CL/CLAccessor.h"
+#include "tests/datasets/BorderModeDataset.h"
+#include "tests/datasets/ShapeDatasets.h"
+#include "tests/framework/Asserts.h"
+#include "tests/framework/Macros.h"
+#include "tests/framework/datasets/Datasets.h"
+#include "tests/validation/Validation.h"
+#include "tests/validation/fixtures/LaplacianPyramidFixture.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace
+{
+const auto small_laplacian_pyramid_levels = framework::dataset::make("NumLevels", 2, 3);
+const auto large_laplacian_pyramid_levels = framework::dataset::make("NumLevels", 2, 5);
+
+const auto formats = combine(framework::dataset::make("FormatIn", Format::U8), framework::dataset::make("FormatOut", Format::S16));
+
+template <typename T>
+inline void validate_laplacian_pyramid(const CLPyramid &target, const std::vector<SimpleTensor<T>> &reference, BorderMode border_mode)
+{
+ CLTensor *level_image = target.get_pyramid_level(0);
+ ValidRegion valid_region = shape_to_valid_region(reference[0].shape(), border_mode == BorderMode::UNDEFINED, BorderSize(2));
+
+ // Validate lowest level
+ validate(CLAccessor(*level_image), reference[0], valid_region);
+
+ // Validate remaining levels
+ for(size_t lev = 1; lev < target.info()->num_levels(); lev++)
+ {
+ level_image = target.get_pyramid_level(lev);
+ CLTensor *prev_level_image = target.get_pyramid_level(lev - 1);
+
+ valid_region = shape_to_valid_region_laplacian_pyramid(prev_level_image->info()->tensor_shape(),
+ prev_level_image->info()->valid_region(),
+ border_mode == BorderMode::UNDEFINED);
+
+ // Validate level
+ validate(CLAccessor(*level_image), reference[lev], valid_region);
+ }
+}
+} // namespace
+
+TEST_SUITE(CL)
+TEST_SUITE(LaplacianPyramid)
+
+// *INDENT-OFF*
+// clang-format off
+DATA_TEST_CASE(Configuration, framework::DatasetMode::ALL, combine(combine(
+ concat(datasets::Medium2DShapes(), datasets::Large2DShapes()),
+ datasets::BorderModes()),
+ large_laplacian_pyramid_levels),
+ shape, border_mode, num_levels)
+{
+ // Create pyramid info
+ PyramidInfo pyramid_info(num_levels, SCALE_PYRAMID_HALF, shape, Format::S16);
+ CLPyramid dst_pyramid{};
+ dst_pyramid.init(pyramid_info);
+
+ // Create Tensors
+ CLTensor src = create_tensor<CLTensor>(shape, Format::U8);
+
+ // The first two dimensions of the output tensor must match the first two
+ // dimensions of the tensor in the last level of the pyramid
+ TensorShape dst_shape(shape);
+ dst_shape.set(0, dst_pyramid.get_pyramid_level(num_levels - 1)->info()->dimension(0));
+ dst_shape.set(1, dst_pyramid.get_pyramid_level(num_levels - 1)->info()->dimension(1));
+ CLTensor dst = create_tensor<CLTensor>(dst_shape, Format::S16);
+
+ // Create and configure function
+ CLLaplacianPyramid laplacian_pyramid;
+ laplacian_pyramid.configure(&src, &dst_pyramid, &dst, border_mode, 0);
+
+ ARM_COMPUTE_EXPECT(src.info()->is_resizable(), framework::LogLevel::ERRORS);
+ ARM_COMPUTE_EXPECT(dst.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+ for(size_t level = 0; level < pyramid_info.num_levels(); ++level)
+ {
+ ARM_COMPUTE_EXPECT(dst_pyramid.get_pyramid_level(level)->info()->is_resizable(), framework::LogLevel::ERRORS);
+ }
+}
+
+using CLLaplacianPyramidFixture = LaplacianPyramidValidationFixture<CLTensor, CLAccessor, CLLaplacianPyramid, uint8_t, int16_t, CLPyramid>;
+
+FIXTURE_DATA_TEST_CASE(RunSmall, CLLaplacianPyramidFixture, framework::DatasetMode::PRECOMMIT,
+ combine(combine(combine(
+ datasets::Medium2DShapes(),
+ datasets::BorderModes()),
+ small_laplacian_pyramid_levels),
+ formats))
+{
+ validate_laplacian_pyramid(_target, _reference, _border_mode);
+}
+
+FIXTURE_DATA_TEST_CASE(RunLarge, CLLaplacianPyramidFixture, framework::DatasetMode::NIGHTLY,
+ combine(combine(combine(
+ datasets::Large2DShapes(),
+ datasets::BorderModes()),
+ large_laplacian_pyramid_levels),
+ formats))
+{
+ validate_laplacian_pyramid(_target, _reference, _border_mode);
+}
+// clang-format on
+// *INDENT-ON*
+
+TEST_SUITE_END()
+TEST_SUITE_END()
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
diff --git a/tests/validation/NEON/LaplacianPyramid.cpp b/tests/validation/NEON/LaplacianPyramid.cpp
new file mode 100644
index 0000000..456ae75
--- /dev/null
+++ b/tests/validation/NEON/LaplacianPyramid.cpp
@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) 2018 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+*/
+#include "arm_compute/core/Types.h"
+#include "arm_compute/runtime/NEON/functions/NELaplacianPyramid.h"
+#include "arm_compute/runtime/Tensor.h"
+#include "arm_compute/runtime/TensorAllocator.h"
+#include "tests/NEON/Accessor.h"
+#include "tests/datasets/BorderModeDataset.h"
+#include "tests/datasets/ShapeDatasets.h"
+#include "tests/framework/Asserts.h"
+#include "tests/framework/Macros.h"
+#include "tests/framework/datasets/Datasets.h"
+#include "tests/validation/Validation.h"
+#include "tests/validation/fixtures/LaplacianPyramidFixture.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace
+{
+const auto small_laplacian_pyramid_levels = framework::dataset::make("NumLevels", 2, 3);
+const auto large_laplacian_pyramid_levels = framework::dataset::make("NumLevels", 2, 5);
+
+const auto formats = combine(framework::dataset::make("FormatIn", Format::U8), framework::dataset::make("FormatOut", Format::S16));
+
+template <typename T>
+inline void validate_laplacian_pyramid(const Pyramid &target, const std::vector<SimpleTensor<T>> &reference, BorderMode border_mode)
+{
+ Tensor *level_image = target.get_pyramid_level(0);
+ ValidRegion valid_region = shape_to_valid_region(reference[0].shape(), border_mode == BorderMode::UNDEFINED, BorderSize(2));
+
+ // Validate lowest level
+ validate(Accessor(*level_image), reference[0], valid_region);
+
+ // Validate remaining levels
+ for(size_t lev = 1; lev < target.info()->num_levels(); lev++)
+ {
+ level_image = target.get_pyramid_level(lev);
+ Tensor *prev_level_image = target.get_pyramid_level(lev - 1);
+
+ valid_region = shape_to_valid_region_laplacian_pyramid(prev_level_image->info()->tensor_shape(),
+ prev_level_image->info()->valid_region(),
+ border_mode == BorderMode::UNDEFINED);
+
+ // Validate level
+ validate(Accessor(*level_image), reference[lev], valid_region);
+ }
+}
+} // namespace
+
+TEST_SUITE(NEON)
+TEST_SUITE(LaplacianPyramid)
+
+// *INDENT-OFF*
+// clang-format off
+DATA_TEST_CASE(Configuration, framework::DatasetMode::ALL, combine(combine(
+ concat(datasets::Medium2DShapes(), datasets::Large2DShapes()),
+ datasets::BorderModes()),
+ large_laplacian_pyramid_levels),
+ shape, border_mode, num_levels)
+{
+ // Create pyramid info
+ PyramidInfo pyramid_info(num_levels, SCALE_PYRAMID_HALF, shape, Format::S16);
+ Pyramid dst_pyramid{};
+ dst_pyramid.init(pyramid_info);
+
+ // Create Tensors
+ Tensor src = create_tensor<Tensor>(shape, Format::U8);
+
+ // The first two dimensions of the output tensor must match the first two
+ // dimensions of the tensor in the last level of the pyramid
+ TensorShape dst_shape(shape);
+ dst_shape.set(0, dst_pyramid.get_pyramid_level(num_levels - 1)->info()->dimension(0));
+ dst_shape.set(1, dst_pyramid.get_pyramid_level(num_levels - 1)->info()->dimension(1));
+ Tensor dst = create_tensor<Tensor>(dst_shape, Format::S16);
+
+ // Create and configure function
+ NELaplacianPyramid laplacian_pyramid;
+ laplacian_pyramid.configure(&src, &dst_pyramid, &dst, border_mode, 0);
+
+ ARM_COMPUTE_EXPECT(src.info()->is_resizable(), framework::LogLevel::ERRORS);
+ ARM_COMPUTE_EXPECT(dst.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+ for(size_t level = 0; level < pyramid_info.num_levels(); ++level)
+ {
+ ARM_COMPUTE_EXPECT(dst_pyramid.get_pyramid_level(level)->info()->is_resizable(), framework::LogLevel::ERRORS);
+ }
+}
+
+using NELaplacianPyramidFixture = LaplacianPyramidValidationFixture<Tensor, Accessor, NELaplacianPyramid, uint8_t, int16_t, Pyramid>;
+
+FIXTURE_DATA_TEST_CASE(RunSmall, NELaplacianPyramidFixture, framework::DatasetMode::PRECOMMIT,
+ combine(combine(combine(
+ datasets::Medium2DShapes(),
+ datasets::BorderModes()),
+ small_laplacian_pyramid_levels),
+ formats))
+{
+ validate_laplacian_pyramid(_target, _reference, _border_mode);
+}
+
+FIXTURE_DATA_TEST_CASE(RunLarge, NELaplacianPyramidFixture, framework::DatasetMode::NIGHTLY,
+ combine(combine(combine(
+ datasets::Large2DShapes(),
+ datasets::BorderModes()),
+ large_laplacian_pyramid_levels),
+ formats))
+{
+ validate_laplacian_pyramid(_target, _reference, _border_mode);
+}
+// clang-format on
+// *INDENT-ON*
+
+TEST_SUITE_END()
+TEST_SUITE_END()
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
diff --git a/tests/validation/fixtures/LaplacianPyramidFixture.h b/tests/validation/fixtures/LaplacianPyramidFixture.h
new file mode 100644
index 0000000..6344272
--- /dev/null
+++ b/tests/validation/fixtures/LaplacianPyramidFixture.h
@@ -0,0 +1,154 @@
+/*
+ * Copyright (c) 2018 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef ARM_COMPUTE_TEST_LAPLACIAN_PYRAMID_FIXTURE
+#define ARM_COMPUTE_TEST_LAPLACIAN_PYRAMID_FIXTURE
+
+#include "arm_compute/core/IPyramid.h"
+#include "arm_compute/core/PyramidInfo.h"
+#include "arm_compute/core/TensorShape.h"
+#include "arm_compute/core/Types.h"
+#include "tests/AssetsLibrary.h"
+#include "tests/Globals.h"
+#include "tests/IAccessor.h"
+#include "tests/framework/Asserts.h"
+#include "tests/framework/Fixture.h"
+#include "tests/validation/reference/LaplacianPyramid.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+template <typename TensorType, typename AccessorType, typename FunctionType, typename T, typename U, typename PyramidType>
+class LaplacianPyramidValidationFixture : public framework::Fixture
+{
+public:
+ template <typename...>
+ void setup(TensorShape input_shape, BorderMode border_mode, size_t num_levels, Format format_in, Format format_out)
+ {
+ std::mt19937 generator(library->seed());
+ std::uniform_int_distribution<T> distribution_u8(0, 255);
+ const T constant_border_value = distribution_u8(generator);
+
+ _pyramid_levels = num_levels;
+ _border_mode = border_mode;
+
+ _target = compute_target(input_shape, border_mode, constant_border_value, format_in, format_out);
+ _reference = compute_reference(input_shape, border_mode, constant_border_value, format_in, format_out);
+ }
+
+protected:
+ template <typename V>
+ void fill(V &&tensor)
+ {
+ library->fill_tensor_uniform(tensor, 0);
+ }
+
+ PyramidType compute_target(const TensorShape &input_shape, BorderMode border_mode, T constant_border_value,
+ Format format_in, Format format_out)
+ {
+ // Create pyramid
+ PyramidType pyramid{};
+
+ // Create Pyramid Info
+ PyramidInfo pyramid_info(_pyramid_levels, SCALE_PYRAMID_HALF, input_shape, format_out);
+
+ // Use conservative padding strategy to fit all subsequent kernels
+ pyramid.init_auto_padding(pyramid_info);
+
+ // Create tensors
+ TensorType src = create_tensor<TensorType>(input_shape, format_in);
+
+ // The first two dimensions of the output tensor must match the first
+ // two dimensions of the tensor in the last level of the pyramid
+ TensorShape dst_shape(input_shape);
+ dst_shape.set(0, pyramid.get_pyramid_level(_pyramid_levels - 1)->info()->dimension(0));
+ dst_shape.set(1, pyramid.get_pyramid_level(_pyramid_levels - 1)->info()->dimension(1));
+
+ // The lowest resolution tensor necessary to reconstruct the input
+ // tensor from the pyramid.
+ _dst_target = create_tensor<TensorType>(dst_shape, format_out);
+
+ // Create and configure function
+ FunctionType laplacian_pyramid;
+ laplacian_pyramid.configure(&src, &pyramid, &_dst_target, border_mode, constant_border_value);
+
+ ARM_COMPUTE_EXPECT(src.info()->is_resizable(), framework::LogLevel::ERRORS);
+ ARM_COMPUTE_EXPECT(_dst_target.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+ // Allocate tensors
+ src.allocator()->allocate();
+ _dst_target.allocator()->allocate();
+
+ ARM_COMPUTE_EXPECT(!src.info()->is_resizable(), framework::LogLevel::ERRORS);
+ ARM_COMPUTE_EXPECT(!_dst_target.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+ pyramid.allocate();
+
+ for(size_t i = 0; i < pyramid_info.num_levels(); ++i)
+ {
+ ARM_COMPUTE_EXPECT(!pyramid.get_pyramid_level(i)->info()->is_resizable(), framework::LogLevel::ERRORS);
+ }
+
+ // Fill tensors
+ fill(AccessorType(src));
+
+ // Compute function
+ laplacian_pyramid.run();
+
+ return pyramid;
+ }
+
+ std::vector<SimpleTensor<U>> compute_reference(const TensorShape &shape, BorderMode border_mode, T constant_border_value,
+ Format format_in, Format format_out)
+ {
+ // Create reference
+ SimpleTensor<T> src{ shape, format_in };
+
+ // The first two dimensions of the output tensor must match the first
+ // two dimensions of the tensor in the last level of the pyramid
+ TensorShape dst_shape(shape);
+ dst_shape.set(0, static_cast<float>(shape[0] + 1) / static_cast<float>(std::pow(2, _pyramid_levels - 1)));
+ dst_shape.set(1, static_cast<float>(shape[1] + 1) / static_cast<float>(std::pow(2, _pyramid_levels - 1)));
+
+ _dst_reference = SimpleTensor<U>(dst_shape, format_out);
+
+ // Fill reference
+ fill(src);
+
+ return reference::laplacian_pyramid<T, U>(src, _dst_reference, _pyramid_levels, border_mode, constant_border_value);
+ }
+
+ size_t _pyramid_levels{};
+ BorderMode _border_mode{};
+ SimpleTensor<U> _dst_reference{};
+ TensorType _dst_target{};
+ PyramidType _target{};
+ std::vector<SimpleTensor<U>> _reference{};
+};
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
+#endif /* ARM_COMPUTE_TEST_LAPLACIAN_PYRAMID_FIXTURE */
diff --git a/tests/validation/reference/LaplacianPyramid.cpp b/tests/validation/reference/LaplacianPyramid.cpp
new file mode 100644
index 0000000..5668474
--- /dev/null
+++ b/tests/validation/reference/LaplacianPyramid.cpp
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2018 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include "LaplacianPyramid.h"
+
+#include "tests/validation/reference/ArithmeticSubtraction.h"
+#include "tests/validation/reference/DepthConvertLayer.h"
+#include "tests/validation/reference/Gaussian5x5.h"
+#include "tests/validation/reference/GaussianPyramidHalf.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace reference
+{
+template <typename T, typename U>
+std::vector<SimpleTensor<U>> laplacian_pyramid(const SimpleTensor<T> &src, SimpleTensor<U> &dst, size_t num_levels, BorderMode border_mode, uint8_t constant_border_value)
+{
+ std::vector<SimpleTensor<T>> pyramid_conv;
+ std::vector<SimpleTensor<U>> pyramid_dst;
+
+ // First, a Gaussian pyramid with SCALE_PYRAMID_HALF is created
+ std::vector<SimpleTensor<T>> gaussian_level_pyramid = reference::gaussian_pyramid_half(src, border_mode, constant_border_value, num_levels);
+
+ // For each level i, the corresponding image Ii is blurred with Gaussian 5x5
+ // filter, and the difference between the two images is the corresponding
+ // level Li of the Laplacian pyramid
+ for(size_t i = 0; i < num_levels; ++i)
+ {
+ const SimpleTensor<T> level_filtered = reference::gaussian5x5(gaussian_level_pyramid[i], border_mode, constant_border_value);
+ pyramid_conv.push_back(level_filtered);
+
+ const SimpleTensor<U> level_sub = reference::arithmetic_subtraction<T, T, U>(gaussian_level_pyramid[i], level_filtered, dst.data_type(), ConvertPolicy::WRAP);
+ pyramid_dst.push_back(level_sub);
+ }
+
+ // Return the lowest resolution image and the pyramid
+ dst = depth_convert<T, U>(pyramid_conv[num_levels - 1], DataType::S16, ConvertPolicy::WRAP, 0);
+
+ return pyramid_dst;
+}
+
+template std::vector<SimpleTensor<int16_t>> laplacian_pyramid(const SimpleTensor<uint8_t> &src, SimpleTensor<int16_t> &dst, size_t num_levels, BorderMode border_mode, uint8_t constant_border_value);
+} // namespace reference
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
diff --git a/tests/validation/reference/LaplacianPyramid.h b/tests/validation/reference/LaplacianPyramid.h
new file mode 100644
index 0000000..aa76f56
--- /dev/null
+++ b/tests/validation/reference/LaplacianPyramid.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2018 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef __ARM_COMPUTE_TEST_LAPLACIAN_PYRAMID_H__
+#define __ARM_COMPUTE_TEST_LAPLACIAN_PYRAMID_H__
+
+#include "tests/SimpleTensor.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace reference
+{
+template <typename T, typename U>
+std::vector<SimpleTensor<U>> laplacian_pyramid(const SimpleTensor<T> &src, SimpleTensor<U> &dst, size_t num_levels, BorderMode border_mode, uint8_t constant_border_value);
+} // namespace reference
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_TEST_LAPLACIAN_PYRAMID_H__ */