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>

1 files changed, 70 insertions, 0 deletions

diff --git a/tests/validation/reference/LaplacianPyramid.cpp b/tests/validation/reference/LaplacianPyramid.cpp
new file mode 100644
index 0000000000..566847453b
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+++ b/tests/validation/reference/LaplacianPyramid.cpp
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+/*
+ * 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