COMPMID-507: Move Sobel to new validation

Change-Id: Ic0a9dbd8e646abbf8d9ea52e497a5fe60e499cc7
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/88883
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>

8 files changed, 954 insertions, 41 deletions

diff --git a/tests/validation/CL/Sobel.cpp b/tests/validation/CL/Sobel.cpp
new file mode 100644
index 0000000000..cde93e77a9
--- /dev/null
+++ b/tests/validation/CL/Sobel.cpp
@@ -0,0 +1,283 @@
+/*
+ * Copyright (c) 2017 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/CLTensor.h"
+#include "arm_compute/runtime/CL/CLTensorAllocator.h"
+#include "arm_compute/runtime/CL/functions/CLSobel3x3.h"
+#include "arm_compute/runtime/CL/functions/CLSobel5x5.h"
+#include "arm_compute/runtime/CL/functions/CLSobel7x7.h"
+#include "tests/CL/CLAccessor.h"
+#include "tests/PaddingCalculator.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/SobelFixture.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+TEST_SUITE(CL)
+TEST_SUITE(Sobel)
+
+TEST_SUITE(W3x3)
+using CLSobel3x3Fixture = SobelValidationFixture<CLTensor, CLAccessor, CLSobel3x3, uint8_t, int16_t>;
+
+DATA_TEST_CASE(Configuration, framework::DatasetMode::ALL, combine(combine(concat(datasets::Small2DShapes(), datasets::Large2DShapes()), datasets::BorderModes()), framework::dataset::make("Format",
+                                                                   Format::U8)),
+               shape, border_mode, format)
+{
+    // Generate a random constant value
+    std::mt19937                           gen(library->seed());
+    std::uniform_int_distribution<uint8_t> int_dist(0, 255);
+    const uint8_t                          constant_border_value = int_dist(gen);
+
+    // Create tensors
+    CLTensor src   = create_tensor<CLTensor>(shape, data_type_from_format(format));
+    CLTensor dst_x = create_tensor<CLTensor>(shape, DataType::S16);
+    CLTensor dst_y = create_tensor<CLTensor>(shape, DataType::S16);
+
+    src.info()->set_format(format);
+    dst_x.info()->set_format(Format::S16);
+    dst_y.info()->set_format(Format::S16);
+
+    ARM_COMPUTE_EXPECT(src.info()->is_resizable(), framework::LogLevel::ERRORS);
+    ARM_COMPUTE_EXPECT(dst_x.info()->is_resizable(), framework::LogLevel::ERRORS);
+    ARM_COMPUTE_EXPECT(dst_y.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+    // Create sobel 3x3 configure function
+    CLSobel3x3 sobel;
+    sobel.configure(&src, &dst_x, &dst_y, border_mode, constant_border_value);
+
+    // Validate valid region
+    constexpr BorderSize border_size{ 1 };
+    const ValidRegion    dst_valid_region = shape_to_valid_region(shape, border_mode == BorderMode::UNDEFINED, border_size);
+
+    validate(dst_x.info()->valid_region(), dst_valid_region);
+    validate(dst_y.info()->valid_region(), dst_valid_region);
+
+    // Validate padding
+    PaddingCalculator calculator(shape.x(), 8);
+
+    calculator.set_border_mode(border_mode);
+    calculator.set_border_size(1);
+
+    const PaddingSize dst_padding = calculator.required_padding();
+
+    calculator.set_accessed_elements(16);
+    calculator.set_access_offset(-1);
+
+    const PaddingSize src_padding = calculator.required_padding();
+
+    validate(src.info()->padding(), src_padding);
+    validate(dst_x.info()->padding(), dst_padding);
+    validate(dst_y.info()->padding(), dst_padding);
+}
+
+FIXTURE_DATA_TEST_CASE(RunSmall, CLSobel3x3Fixture, framework::DatasetMode::PRECOMMIT, combine(combine(datasets::Small2DShapes(), datasets::BorderModes()), framework::dataset::make("Format",
+                                                                                               Format::U8)))
+{
+    // Validate output
+    ValidRegion valid_region_x = shape_to_valid_region(_reference.first.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(1));
+    validate(CLAccessor(_target.first), _reference.first, valid_region_x);
+
+    ValidRegion valid_region_y = shape_to_valid_region(_reference.second.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(1));
+    validate(CLAccessor(_target.second), _reference.second, valid_region_y);
+}
+
+FIXTURE_DATA_TEST_CASE(RunLarge, CLSobel3x3Fixture, framework::DatasetMode::NIGHTLY, combine(combine(datasets::Large2DShapes(), datasets::BorderModes()), framework::dataset::make("Format",
+                                                                                             Format::U8)))
+{
+    // Validate output
+    ValidRegion valid_region_x = shape_to_valid_region(_reference.first.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(1));
+    validate(CLAccessor(_target.first), _reference.first, valid_region_x);
+
+    ValidRegion valid_region_y = shape_to_valid_region(_reference.second.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(1));
+    validate(CLAccessor(_target.second), _reference.second, valid_region_y);
+}
+TEST_SUITE_END()
+
+TEST_SUITE(W5x5)
+using CLSobel5x5Fixture = SobelValidationFixture<CLTensor, CLAccessor, CLSobel5x5, uint8_t, int16_t>;
+
+DATA_TEST_CASE(Configuration, framework::DatasetMode::ALL, combine(combine(concat(datasets::Small2DShapes(), datasets::Large2DShapes()), datasets::BorderModes()), framework::dataset::make("Format",
+                                                                   Format::U8)),
+               shape, border_mode, format)
+{
+    // Generate a random constant value
+    std::mt19937                           gen(library->seed());
+    std::uniform_int_distribution<uint8_t> int_dist(0, 255);
+    const uint8_t                          constant_border_value = int_dist(gen);
+
+    // Create tensors
+    CLTensor src   = create_tensor<CLTensor>(shape, data_type_from_format(format));
+    CLTensor dst_x = create_tensor<CLTensor>(shape, DataType::S16);
+    CLTensor dst_y = create_tensor<CLTensor>(shape, DataType::S16);
+
+    src.info()->set_format(format);
+    dst_x.info()->set_format(Format::S16);
+    dst_y.info()->set_format(Format::S16);
+
+    ARM_COMPUTE_EXPECT(src.info()->is_resizable(), framework::LogLevel::ERRORS);
+    ARM_COMPUTE_EXPECT(dst_x.info()->is_resizable(), framework::LogLevel::ERRORS);
+    ARM_COMPUTE_EXPECT(dst_y.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+    // Create sobel 5x5 configure function
+    CLSobel5x5 sobel;
+    sobel.configure(&src, &dst_x, &dst_y, border_mode, constant_border_value);
+
+    // Validate valid region
+    constexpr BorderSize border_size{ 2 };
+    const ValidRegion    dst_valid_region = shape_to_valid_region(shape, border_mode == BorderMode::UNDEFINED, border_size);
+
+    validate(dst_x.info()->valid_region(), dst_valid_region);
+    validate(dst_y.info()->valid_region(), dst_valid_region);
+
+    // Validate padding
+    PaddingCalculator calculator(shape.x(), 8);
+    calculator.set_border_mode(border_mode);
+    calculator.set_border_size(2);
+
+    const PaddingSize dst_padding = calculator.required_padding();
+
+    calculator.set_accessed_elements(16);
+    calculator.set_access_offset(-2);
+
+    const PaddingSize src_padding = calculator.required_padding();
+
+    validate(src.info()->padding(), src_padding);
+    validate(dst_x.info()->padding(), dst_padding);
+    validate(dst_y.info()->padding(), dst_padding);
+}
+
+FIXTURE_DATA_TEST_CASE(RunSmall, CLSobel5x5Fixture, framework::DatasetMode::PRECOMMIT, combine(combine(datasets::Small2DShapes(), datasets::BorderModes()), framework::dataset::make("Format",
+                                                                                               Format::U8)))
+{
+    // Validate output
+    ValidRegion valid_region_x = shape_to_valid_region(_reference.first.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(2));
+    validate(CLAccessor(_target.first), _reference.first, valid_region_x);
+
+    ValidRegion valid_region_y = shape_to_valid_region(_reference.second.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(2));
+    validate(CLAccessor(_target.second), _reference.second, valid_region_y);
+}
+
+FIXTURE_DATA_TEST_CASE(RunLarge, CLSobel5x5Fixture, framework::DatasetMode::NIGHTLY, combine(combine(datasets::Large2DShapes(), datasets::BorderModes()), framework::dataset::make("Format",
+                                                                                             Format::U8)))
+{
+    // Validate output
+    ValidRegion valid_region_x = shape_to_valid_region(_reference.first.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(2));
+    validate(CLAccessor(_target.first), _reference.first, valid_region_x);
+
+    ValidRegion valid_region_y = shape_to_valid_region(_reference.second.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(2));
+    validate(CLAccessor(_target.second), _reference.second, valid_region_y);
+}
+TEST_SUITE_END()
+
+TEST_SUITE(W7x7)
+using CLSobel7x7Fixture = SobelValidationFixture<CLTensor, CLAccessor, CLSobel7x7, uint8_t, int32_t>;
+
+DATA_TEST_CASE(Configuration, framework::DatasetMode::ALL, combine(combine(concat(datasets::Small2DShapes(), datasets::Large2DShapes()), datasets::BorderModes()), framework::dataset::make("Format",
+                                                                   Format::U8)),
+               shape, border_mode, format)
+{
+    // Generate a random constant value
+    std::mt19937                           gen(library->seed());
+    std::uniform_int_distribution<uint8_t> int_dist(0, 255);
+    const uint8_t                          constant_border_value = int_dist(gen);
+
+    // Create tensors
+    CLTensor src   = create_tensor<CLTensor>(shape, data_type_from_format(format));
+    CLTensor dst_x = create_tensor<CLTensor>(shape, DataType::S32);
+    CLTensor dst_y = create_tensor<CLTensor>(shape, DataType::S32);
+
+    src.info()->set_format(format);
+    dst_x.info()->set_format(Format::S32);
+    dst_y.info()->set_format(Format::S32);
+
+    ARM_COMPUTE_EXPECT(src.info()->is_resizable(), framework::LogLevel::ERRORS);
+    ARM_COMPUTE_EXPECT(dst_x.info()->is_resizable(), framework::LogLevel::ERRORS);
+    ARM_COMPUTE_EXPECT(dst_y.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+    // Create sobel 7x7 configure function
+    CLSobel7x7 sobel;
+    sobel.configure(&src, &dst_x, &dst_y, border_mode, constant_border_value);
+
+    // Validate valid region
+    constexpr BorderSize border_size{ 3 };
+    const ValidRegion    dst_valid_region = shape_to_valid_region(shape, border_mode == BorderMode::UNDEFINED, border_size);
+
+    validate(dst_x.info()->valid_region(), dst_valid_region);
+    validate(dst_y.info()->valid_region(), dst_valid_region);
+
+    // Validate padding
+    PaddingCalculator calculator(shape.x(), 8);
+
+    calculator.set_border_mode(border_mode);
+    calculator.set_border_size(3);
+
+    const PaddingSize dst_padding = calculator.required_padding();
+
+    calculator.set_accessed_elements(16);
+    calculator.set_access_offset(-3);
+
+    const PaddingSize src_padding = calculator.required_padding();
+
+    validate(src.info()->padding(), src_padding);
+    validate(dst_x.info()->padding(), dst_padding);
+    validate(dst_y.info()->padding(), dst_padding);
+}
+
+FIXTURE_DATA_TEST_CASE(RunSmall, CLSobel7x7Fixture, framework::DatasetMode::PRECOMMIT, combine(combine(datasets::Small2DShapes(), datasets::BorderModes()), framework::dataset::make("Format",
+                                                                                               Format::U8)))
+{
+    // Validate output
+    ValidRegion valid_region_x = shape_to_valid_region(_reference.first.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(3));
+    validate(CLAccessor(_target.first), _reference.first, valid_region_x);
+
+    ValidRegion valid_region_y = shape_to_valid_region(_reference.second.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(3));
+    validate(CLAccessor(_target.second), _reference.second, valid_region_y);
+}
+
+FIXTURE_DATA_TEST_CASE(RunLarge, CLSobel7x7Fixture, framework::DatasetMode::NIGHTLY, combine(combine(datasets::Large2DShapes(), datasets::BorderModes()), framework::dataset::make("Format",
+                                                                                             Format::U8)))
+{
+    // Validate output
+    ValidRegion valid_region_x = shape_to_valid_region(_reference.first.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(3));
+    validate(CLAccessor(_target.first), _reference.first, valid_region_x);
+
+    ValidRegion valid_region_y = shape_to_valid_region(_reference.second.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(3));
+    validate(CLAccessor(_target.second), _reference.second, valid_region_y);
+}
+TEST_SUITE_END()
+
+TEST_SUITE_END()
+TEST_SUITE_END()
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
diff --git a/tests/validation/CPP/Sobel.cpp b/tests/validation/CPP/Sobel.cpp
new file mode 100644
index 0000000000..314fbd4f8a
--- /dev/null
+++ b/tests/validation/CPP/Sobel.cpp
@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 2017 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 "Sobel.h"
+
+#include "Utils.h"
+#include "tests/validation/Helpers.h"
+
+#include <array>
+#include <map>
+#include <utility>
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace reference
+{
+namespace
+{
+const std::array<int8_t, 9> sobel_3_x{ { -1, 0, 1, -2, 0, 2, -1, 0, 1 } };
+const std::array<int8_t, 9> sobel_3_y{ { -1, -2, -1, 0, 0, 0, 1, 2, 1 } };
+
+const std::array<int8_t, 25> sobel_5_x{ {
+        -1, -2, 0, 2, 1,
+        -4, -8, 0, 8, 4,
+        -6, -12, 0, 12, 6,
+        -4, -8, 0, 8, 4,
+        -1, -2, 0, 2, 1
+    } };
+
+const std::array<int8_t, 25> sobel_5_y{ {
+        -1, -4, -6, -4, -1,
+        -2, -8, -12, -8, -2,
+        0, 0, 0, 0, 0,
+        2, 8, 12, 8, 2,
+        1, 4, 6, 4, 1
+    } };
+
+const std::array<int8_t, 49> sobel_7_x{ {
+        -1, -4, -5, 0, 5, 4, 1,
+        -6, -24, -30, 0, 30, 24, 6,
+        -15, -60, -75, 0, 75, 60, 15,
+        -20, -80, -100, 0, 100, 80, 20,
+        -15, -60, -75, 0, 75, 60, 15,
+        -6, -24, -30, 0, 30, 24, 6,
+        -1, -4, -5, 0, 5, 4, 1
+    } };
+
+const std::array<int8_t, 49> sobel_7_y{ {
+        -1, -6, -15, -20, -15, -6, -1,
+        -4, -24, -60, -80, -60, -24, -4,
+        -5, -30, -75, -100, -75, -30, -5,
+        0, 0, 0, 0, 0, 0, 0,
+        5, 30, 75, 100, 75, 30, 5,
+        4, 24, 60, 80, 60, 24, 4,
+        1, 6, 15, 20, 15, 6, 1
+    } };
+
+const std::map<int, std::pair<const int8_t *, const int8_t *>> masks
+{
+    { 3, { sobel_3_x.data(), sobel_3_y.data() } },
+    { 5, { sobel_5_x.data(), sobel_5_y.data() } },
+    { 7, { sobel_7_x.data(), sobel_7_y.data() } },
+};
+
+template <typename T>
+struct data_type;
+
+template <>
+struct data_type<int16_t>
+{
+    const static DataType value = DataType::S16;
+};
+
+template <>
+struct data_type<int>
+{
+    const static DataType value = DataType::S32;
+};
+} // namespace
+
+template <typename T, typename U>
+std::pair<SimpleTensor<T>, SimpleTensor<T>> sobel(const SimpleTensor<U> &src, int filter_size, BorderMode border_mode, uint8_t constant_border_value)
+{
+    SimpleTensor<T> dst_x(src.shape(), data_type<T>::value, src.num_channels());
+    SimpleTensor<T> dst_y(src.shape(), data_type<T>::value, src.num_channels());
+
+    ValidRegion valid_region = shape_to_valid_region(src.shape(), border_mode == BorderMode::UNDEFINED, BorderSize(filter_size / 2));
+
+    for(int i = 0; i < src.num_elements(); ++i)
+    {
+        Coordinates coord = index2coord(src.shape(), i);
+
+        if(!is_in_valid_region(valid_region, coord))
+        {
+            continue;
+        }
+
+        apply_2d_spatial_filter(coord, src, dst_x, TensorShape{ static_cast<unsigned int>(filter_size), static_cast<unsigned int>(filter_size) }, masks.at(filter_size).first, 1.f, border_mode,
+                                constant_border_value);
+        apply_2d_spatial_filter(coord, src, dst_y, TensorShape{ static_cast<unsigned int>(filter_size), static_cast<unsigned int>(filter_size) }, masks.at(filter_size).second, 1.f, border_mode,
+                                constant_border_value);
+    }
+
+    return std::make_pair(dst_x, dst_y);
+}
+
+template std::pair<SimpleTensor<int16_t>, SimpleTensor<int16_t>> sobel(const SimpleTensor<uint8_t> &src, int filter_size, BorderMode border_mode, uint8_t constant_border_value);
+template std::pair<SimpleTensor<int>, SimpleTensor<int>> sobel(const SimpleTensor<uint8_t> &src, int filter_size, BorderMode border_mode, uint8_t constant_border_value);
+} // namespace reference
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
diff --git a/tests/validation/CPP/Sobel.h b/tests/validation/CPP/Sobel.h
new file mode 100644
index 0000000000..ab046639dc
--- /dev/null
+++ b/tests/validation/CPP/Sobel.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2017 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_SOBEL_H__
+#define __ARM_COMPUTE_TEST_SOBEL_H__
+
+#include "arm_compute/core/Types.h"
+#include "tests/SimpleTensor.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+namespace reference
+{
+template <typename T, typename U>
+std::pair<SimpleTensor<T>, SimpleTensor<T>> sobel(const SimpleTensor<U> &src, int filter_size, BorderMode border_mode, uint8_t constant_border_value = 0);
+} // namespace reference
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
+#endif /* __ARM_COMPUTE_TEST_SOBEL_H__ */
diff --git a/tests/validation/CPP/Utils.cpp b/tests/validation/CPP/Utils.cpp
index 2f54879818..e27688889d 100644
--- a/tests/validation/CPP/Utils.cpp
+++ b/tests/validation/CPP/Utils.cpp
@@ -96,43 +96,6 @@ template int16_t bilinear_policy(const SimpleTensor<int16_t> &in, Coordinates id
 template half bilinear_policy(const SimpleTensor<half> &in, Coordinates id, float xn, float yn, BorderMode border_mode, half constant_border_value);
 template float bilinear_policy(const SimpleTensor<float> &in, Coordinates id, float xn, float yn, BorderMode border_mode, float constant_border_value);
 
-/* Apply 2D spatial filter on a single element of @p in at coordinates @p coord
- *
- * - filter sizes have to be odd number
- * - Row major order of filter assumed
- * - TO_ZERO rounding policy assumed
- * - SATURATE convert policy assumed
- *
- */
-template <typename T1, typename T2, typename T3>
-void apply_2d_spatial_filter(Coordinates coord, const SimpleTensor<T1> &in, SimpleTensor<T3> &out, const TensorShape &filter_shape, const T2 *filter_itr, float scale, BorderMode border_mode,
-                             T1 constant_border_value)
-{
-    double    val = 0;
-    const int x   = coord.x();
-    const int y   = coord.y();
-    for(int j = y - static_cast<int>(filter_shape[1] / 2); j <= y + static_cast<int>(filter_shape[1] / 2); ++j)
-    {
-        for(int i = x - static_cast<int>(filter_shape[0] / 2); i <= x + static_cast<int>(filter_shape[0] / 2); ++i)
-        {
-            coord.set(0, i);
-            coord.set(1, j);
-            val += static_cast<double>(*filter_itr) * tensor_elem_at(in, coord, border_mode, constant_border_value);
-            ++filter_itr;
-        }
-    }
-    coord.set(0, x);
-    coord.set(1, y);
-    const double rounded_val = support::cpp11::trunc(val * static_cast<double>(scale));
-    out[coord2index(in.shape(), coord)] = saturate_cast<T3>(rounded_val);
-}
-template void apply_2d_spatial_filter(Coordinates coord, const SimpleTensor<float> &in, SimpleTensor<float> &out, const TensorShape &filter_shape, const float *filter_itr, float scale,
-                                      BorderMode border_mode,
-                                      float      constant_border_value);
-template void apply_2d_spatial_filter(Coordinates coord, const SimpleTensor<uint8_t> &in, SimpleTensor<uint8_t> &out, const TensorShape &filter_shape, const uint8_t *filter_itr, float scale,
-                                      BorderMode border_mode,
-                                      uint8_t    constant_border_value);
-
 RawTensor transpose(const RawTensor &src, int chunk_width)
 {
     // Create reference
diff --git a/tests/validation/CPP/Utils.h b/tests/validation/CPP/Utils.h
index 557d85f204..2d879c129b 100644
--- a/tests/validation/CPP/Utils.h
+++ b/tests/validation/CPP/Utils.h
@@ -47,9 +47,34 @@ T tensor_elem_at(const SimpleTensor<T> &in, Coordinates coord, BorderMode border
 template <typename T>
 T bilinear_policy(const SimpleTensor<T> &in, Coordinates id, float xn, float yn, BorderMode border_mode, T constant_border_value);
 
-template <typename T1, typename T2, typename T3>
-void apply_2d_spatial_filter(Coordinates coord, const SimpleTensor<T1> &in, SimpleTensor<T3> &out, const TensorShape &filter_shape, const T2 *filter_itr, float scale, BorderMode border_mode,
-                             T1 constant_border_value = 0);
+/* Apply 2D spatial filter on a single element of @p in at coordinates @p coord
+ *
+ * - filter sizes have to be odd number
+ * - Row major order of filter assumed
+ * - TO_ZERO rounding policy assumed
+ * - SATURATE convert policy assumed
+ */
+template <typename T, typename U, typename V>
+void apply_2d_spatial_filter(Coordinates coord, const SimpleTensor<T> &src, SimpleTensor<U> &dst, const TensorShape &filter_shape, const V *filter_itr, double scale, BorderMode border_mode,
+                             T constant_border_value = T(0))
+{
+    double    val = 0.;
+    const int x   = coord.x();
+    const int y   = coord.y();
+    for(int j = y - static_cast<int>(filter_shape[1] / 2); j <= y + static_cast<int>(filter_shape[1] / 2); ++j)
+    {
+        for(int i = x - static_cast<int>(filter_shape[0] / 2); i <= x + static_cast<int>(filter_shape[0] / 2); ++i)
+        {
+            coord.set(0, i);
+            coord.set(1, j);
+            val += static_cast<double>(*filter_itr) * tensor_elem_at(src, coord, border_mode, constant_border_value);
+            ++filter_itr;
+        }
+    }
+    coord.set(0, x);
+    coord.set(1, y);
+    dst[coord2index(src.shape(), coord)] = saturate_cast<U>(support::cpp11::trunc(val * scale));
+}
 
 RawTensor transpose(const RawTensor &src, int chunk_width = 1);
 } // namespace validation
diff --git a/tests/validation/NEON/Sobel.cpp b/tests/validation/NEON/Sobel.cpp
new file mode 100644
index 0000000000..99f9e1ff5d
--- /dev/null
+++ b/tests/validation/NEON/Sobel.cpp
@@ -0,0 +1,284 @@
+/*
+ * Copyright (c) 2017 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/NESobel3x3.h"
+#include "arm_compute/runtime/NEON/functions/NESobel5x5.h"
+#include "arm_compute/runtime/NEON/functions/NESobel7x7.h"
+#include "arm_compute/runtime/Tensor.h"
+#include "arm_compute/runtime/TensorAllocator.h"
+#include "tests/NEON/Accessor.h"
+#include "tests/PaddingCalculator.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/SobelFixture.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+TEST_SUITE(NEON)
+TEST_SUITE(Sobel)
+
+TEST_SUITE(W3x3)
+using NESobel3x3Fixture = SobelValidationFixture<Tensor, Accessor, NESobel3x3, uint8_t, int16_t>;
+
+DATA_TEST_CASE(Configuration, framework::DatasetMode::ALL, combine(combine(concat(datasets::Small2DShapes(), datasets::Large2DShapes()), datasets::BorderModes()), framework::dataset::make("Format",
+                                                                   Format::U8)),
+               shape, border_mode, format)
+{
+    // Generate a random constant value
+    std::mt19937                           gen(library->seed());
+    std::uniform_int_distribution<uint8_t> int_dist(0, 255);
+    const uint8_t                          constant_border_value = int_dist(gen);
+
+    // Create tensors
+    Tensor src   = create_tensor<Tensor>(shape, data_type_from_format(format));
+    Tensor dst_x = create_tensor<Tensor>(shape, DataType::S16);
+    Tensor dst_y = create_tensor<Tensor>(shape, DataType::S16);
+
+    src.info()->set_format(format);
+    dst_x.info()->set_format(Format::S16);
+    dst_y.info()->set_format(Format::S16);
+
+    ARM_COMPUTE_EXPECT(src.info()->is_resizable(), framework::LogLevel::ERRORS);
+    ARM_COMPUTE_EXPECT(dst_x.info()->is_resizable(), framework::LogLevel::ERRORS);
+    ARM_COMPUTE_EXPECT(dst_y.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+    // Create sobel 3x3 configure function
+    NESobel3x3 sobel;
+    sobel.configure(&src, &dst_x, &dst_y, border_mode, constant_border_value);
+
+    // Validate valid region
+    constexpr BorderSize border_size{ 1 };
+    const ValidRegion    dst_valid_region = shape_to_valid_region(shape, border_mode == BorderMode::UNDEFINED, border_size);
+
+    validate(dst_x.info()->valid_region(), dst_valid_region);
+    validate(dst_y.info()->valid_region(), dst_valid_region);
+
+    // Validate padding
+    PaddingCalculator calculator(shape.x(), 8);
+
+    calculator.set_border_mode(border_mode);
+    calculator.set_border_size(1);
+
+    const PaddingSize dst_padding = calculator.required_padding();
+
+    calculator.set_accessed_elements(16);
+    calculator.set_access_offset(-1);
+
+    const PaddingSize src_padding = calculator.required_padding();
+
+    validate(src.info()->padding(), src_padding);
+    validate(dst_x.info()->padding(), dst_padding);
+    validate(dst_y.info()->padding(), dst_padding);
+}
+
+FIXTURE_DATA_TEST_CASE(RunSmall, NESobel3x3Fixture, framework::DatasetMode::PRECOMMIT, combine(combine(datasets::Small2DShapes(), datasets::BorderModes()), framework::dataset::make("Format",
+                                                                                               Format::U8)))
+{
+    // Validate output
+    ValidRegion valid_region_x = shape_to_valid_region(_reference.first.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(1));
+    validate(Accessor(_target.first), _reference.first, valid_region_x);
+
+    ValidRegion valid_region_y = shape_to_valid_region(_reference.second.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(1));
+    validate(Accessor(_target.second), _reference.second, valid_region_y);
+}
+
+FIXTURE_DATA_TEST_CASE(RunLarge, NESobel3x3Fixture, framework::DatasetMode::NIGHTLY, combine(combine(datasets::Large2DShapes(), datasets::BorderModes()), framework::dataset::make("Format",
+                                                                                             Format::U8)))
+{
+    // Validate output
+    ValidRegion valid_region_x = shape_to_valid_region(_reference.first.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(1));
+    validate(Accessor(_target.first), _reference.first, valid_region_x);
+
+    ValidRegion valid_region_y = shape_to_valid_region(_reference.second.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(1));
+    validate(Accessor(_target.second), _reference.second, valid_region_y);
+}
+TEST_SUITE_END()
+
+TEST_SUITE(W5x5)
+using NESobel5x5Fixture = SobelValidationFixture<Tensor, Accessor, NESobel5x5, uint8_t, int16_t>;
+
+DATA_TEST_CASE(Configuration, framework::DatasetMode::ALL, combine(combine(concat(datasets::Small2DShapes(), datasets::Large2DShapes()), datasets::BorderModes()), framework::dataset::make("Format",
+                                                                   Format::U8)),
+               shape, border_mode, format)
+{
+    // Generate a random constant value
+    std::mt19937                           gen(library->seed());
+    std::uniform_int_distribution<uint8_t> int_dist(0, 255);
+    const uint8_t                          constant_border_value = int_dist(gen);
+
+    // Create tensors
+    Tensor src   = create_tensor<Tensor>(shape, data_type_from_format(format));
+    Tensor dst_x = create_tensor<Tensor>(shape, DataType::S16);
+    Tensor dst_y = create_tensor<Tensor>(shape, DataType::S16);
+
+    src.info()->set_format(format);
+    dst_x.info()->set_format(Format::S16);
+    dst_y.info()->set_format(Format::S16);
+
+    ARM_COMPUTE_EXPECT(src.info()->is_resizable(), framework::LogLevel::ERRORS);
+    ARM_COMPUTE_EXPECT(dst_x.info()->is_resizable(), framework::LogLevel::ERRORS);
+    ARM_COMPUTE_EXPECT(dst_y.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+    // Create sobel 5x5 configure function
+    NESobel5x5 sobel;
+    sobel.configure(&src, &dst_x, &dst_y, border_mode, constant_border_value);
+
+    // Validate valid region
+    constexpr BorderSize border_size{ 2 };
+    const ValidRegion    dst_valid_region = shape_to_valid_region(shape, border_mode == BorderMode::UNDEFINED, border_size);
+
+    validate(dst_x.info()->valid_region(), dst_valid_region);
+    validate(dst_y.info()->valid_region(), dst_valid_region);
+
+    // Validate padding
+    PaddingCalculator calculator(shape.x(), 16);
+
+    calculator.set_border_mode(border_mode);
+    calculator.set_border_size(2);
+
+    const PaddingSize dst_padding = calculator.required_padding();
+
+    calculator.set_processed_elements(8);
+    calculator.set_access_offset(-2);
+
+    const PaddingSize src_padding = calculator.required_padding();
+
+    validate(src.info()->padding(), src_padding);
+    validate(dst_x.info()->padding(), dst_padding);
+    validate(dst_y.info()->padding(), dst_padding);
+}
+
+FIXTURE_DATA_TEST_CASE(RunSmall, NESobel5x5Fixture, framework::DatasetMode::PRECOMMIT, combine(combine(datasets::Small2DShapes(), datasets::BorderModes()), framework::dataset::make("Format",
+                                                                                               Format::U8)))
+{
+    // Validate output
+    ValidRegion valid_region_x = shape_to_valid_region(_reference.first.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(2));
+    validate(Accessor(_target.first), _reference.first, valid_region_x);
+
+    ValidRegion valid_region_y = shape_to_valid_region(_reference.second.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(2));
+    validate(Accessor(_target.second), _reference.second, valid_region_y);
+}
+
+FIXTURE_DATA_TEST_CASE(RunLarge, NESobel5x5Fixture, framework::DatasetMode::NIGHTLY, combine(combine(datasets::Large2DShapes(), datasets::BorderModes()), framework::dataset::make("Format",
+                                                                                             Format::U8)))
+{
+    // Validate output
+    ValidRegion valid_region_x = shape_to_valid_region(_reference.first.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(2));
+    validate(Accessor(_target.first), _reference.first, valid_region_x);
+
+    ValidRegion valid_region_y = shape_to_valid_region(_reference.second.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(2));
+    validate(Accessor(_target.second), _reference.second, valid_region_y);
+}
+TEST_SUITE_END()
+
+TEST_SUITE(W7x7)
+using NESobel7x7Fixture = SobelValidationFixture<Tensor, Accessor, NESobel7x7, uint8_t, int32_t>;
+
+DATA_TEST_CASE(Configuration, framework::DatasetMode::ALL, combine(combine(concat(datasets::Small2DShapes(), datasets::Large2DShapes()), datasets::BorderModes()), framework::dataset::make("Format",
+                                                                   Format::U8)),
+               shape, border_mode, format)
+{
+    // Generate a random constant value
+    std::mt19937                           gen(library->seed());
+    std::uniform_int_distribution<uint8_t> int_dist(0, 255);
+    const uint8_t                          constant_border_value = int_dist(gen);
+
+    // Create tensors
+    Tensor src   = create_tensor<Tensor>(shape, data_type_from_format(format));
+    Tensor dst_x = create_tensor<Tensor>(shape, DataType::S32);
+    Tensor dst_y = create_tensor<Tensor>(shape, DataType::S32);
+
+    src.info()->set_format(format);
+    dst_x.info()->set_format(Format::S32);
+    dst_y.info()->set_format(Format::S32);
+
+    ARM_COMPUTE_EXPECT(src.info()->is_resizable(), framework::LogLevel::ERRORS);
+    ARM_COMPUTE_EXPECT(dst_x.info()->is_resizable(), framework::LogLevel::ERRORS);
+    ARM_COMPUTE_EXPECT(dst_y.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+    // Create sobel 7x7 configure function
+    NESobel7x7 sobel;
+    sobel.configure(&src, &dst_x, &dst_y, border_mode, constant_border_value);
+
+    // Validate valid region
+    constexpr BorderSize border_size{ 3 };
+    const ValidRegion    dst_valid_region = shape_to_valid_region(shape, border_mode == BorderMode::UNDEFINED, border_size);
+
+    validate(dst_x.info()->valid_region(), dst_valid_region);
+    validate(dst_y.info()->valid_region(), dst_valid_region);
+
+    // Validate padding
+    PaddingCalculator calculator(shape.x(), 8);
+
+    calculator.set_border_mode(border_mode);
+    calculator.set_border_size(3);
+
+    const PaddingSize dst_padding = calculator.required_padding();
+
+    calculator.set_accessed_elements(16);
+    calculator.set_access_offset(-3);
+
+    const PaddingSize src_padding = calculator.required_padding();
+
+    validate(src.info()->padding(), src_padding);
+    validate(dst_x.info()->padding(), dst_padding);
+    validate(dst_y.info()->padding(), dst_padding);
+}
+
+FIXTURE_DATA_TEST_CASE(RunSmall, NESobel7x7Fixture, framework::DatasetMode::PRECOMMIT, combine(combine(datasets::Small2DShapes(), datasets::BorderModes()), framework::dataset::make("Format",
+                                                                                               Format::U8)))
+{
+    // Validate output
+    ValidRegion valid_region_x = shape_to_valid_region(_reference.first.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(3));
+    validate(Accessor(_target.first), _reference.first, valid_region_x);
+
+    ValidRegion valid_region_y = shape_to_valid_region(_reference.second.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(3));
+    validate(Accessor(_target.second), _reference.second, valid_region_y);
+}
+
+FIXTURE_DATA_TEST_CASE(RunLarge, NESobel7x7Fixture, framework::DatasetMode::NIGHTLY, combine(combine(datasets::Large2DShapes(), datasets::BorderModes()), framework::dataset::make("Format",
+                                                                                             Format::U8)))
+{
+    // Validate output
+    ValidRegion valid_region_x = shape_to_valid_region(_reference.first.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(3));
+    validate(Accessor(_target.first), _reference.first, valid_region_x);
+
+    ValidRegion valid_region_y = shape_to_valid_region(_reference.second.shape(), (_border_mode == BorderMode::UNDEFINED), BorderSize(3));
+    validate(Accessor(_target.second), _reference.second, valid_region_y);
+}
+TEST_SUITE_END()
+
+TEST_SUITE_END()
+TEST_SUITE_END()
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
diff --git a/tests/validation/Validation.h b/tests/validation/Validation.h
index 85238617d8..b6e7b8e82b 100644
--- a/tests/validation/Validation.h
+++ b/tests/validation/Validation.h
@@ -211,7 +211,7 @@ void validate(std::vector<unsigned int> classified_labels, std::vector<unsigned
  *
  * - All values should match
  */
-template <typename T, typename U>
+template <typename T, typename U = AbsoluteTolerance<T>>
 void validate(T target, T reference, U tolerance = AbsoluteTolerance<T>());
 
 template <typename T>
diff --git a/tests/validation/fixtures/SobelFixture.h b/tests/validation/fixtures/SobelFixture.h
new file mode 100644
index 0000000000..2a592b87f7
--- /dev/null
+++ b/tests/validation/fixtures/SobelFixture.h
@@ -0,0 +1,178 @@
+/*
+ * Copyright (c) 2017 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_SOBEL_FIXTURE
+#define ARM_COMPUTE_TEST_SOBEL_FIXTURE
+
+#include "arm_compute/core/TensorShape.h"
+#include "arm_compute/core/Types.h"
+#include "support/ToolchainSupport.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/CPP/Sobel.h"
+
+#include <memory>
+
+namespace arm_compute
+{
+class CLSobel3x3;
+class CLSobel5x5;
+class CLSobel7x7;
+class NESobel3x3;
+class NESobel5x5;
+class NESobel7x7;
+
+namespace test
+{
+namespace validation
+{
+namespace
+{
+template <typename Function>
+struct info;
+
+template <>
+struct info<NESobel3x3>
+{
+    static const Format dst_format  = Format::S16;
+    static const int    filter_size = 3;
+};
+
+template <>
+struct info<CLSobel3x3>
+{
+    static const Format dst_format  = Format::S16;
+    static const int    filter_size = 3;
+};
+
+template <>
+struct info<NESobel5x5>
+{
+    static const Format dst_format  = Format::S16;
+    static const int    filter_size = 5;
+};
+
+template <>
+struct info<CLSobel5x5>
+{
+    static const Format dst_format  = Format::S16;
+    static const int    filter_size = 5;
+};
+
+template <>
+struct info<NESobel7x7>
+{
+    static const Format dst_format  = Format::S32;
+    static const int    filter_size = 7;
+};
+
+template <>
+struct info<CLSobel7x7>
+{
+    static const Format dst_format  = Format::S32;
+    static const int    filter_size = 7;
+};
+} // namespace
+
+template <typename TensorType, typename AccessorType, typename FunctionType, typename T, typename U>
+class SobelValidationFixture : public framework::Fixture
+{
+public:
+    template <typename...>
+    void setup(TensorShape shape, BorderMode border_mode, Format format)
+    {
+        // Generate a random constant value
+        std::mt19937                           gen(library->seed());
+        std::uniform_int_distribution<uint8_t> int_dist(0, 255);
+        const uint8_t                          constant_border_value = int_dist(gen);
+
+        _border_mode = border_mode;
+        _target      = compute_target(shape, border_mode, format, constant_border_value);
+        _reference   = compute_reference(shape, info<FunctionType>::filter_size, border_mode, format, constant_border_value);
+    }
+
+protected:
+    template <typename V>
+    void fill(V &&tensor)
+    {
+        library->fill_tensor_uniform(tensor, 0);
+    }
+
+    std::pair<TensorType, TensorType> compute_target(const TensorShape &shape, BorderMode border_mode, Format format, uint8_t constant_border_value)
+    {
+        // Create tensors
+        TensorType src   = create_tensor<TensorType>(shape, data_type_from_format(format));
+        TensorType dst_x = create_tensor<TensorType>(shape, data_type_from_format(info<FunctionType>::dst_format));
+        TensorType dst_y = create_tensor<TensorType>(shape, data_type_from_format(info<FunctionType>::dst_format));
+
+        src.info()->set_format(format);
+        dst_x.info()->set_format(info<FunctionType>::dst_format);
+        dst_y.info()->set_format(info<FunctionType>::dst_format);
+
+        FunctionType sobel;
+        sobel.configure(&src, &dst_x, &dst_y, border_mode, constant_border_value);
+
+        ARM_COMPUTE_EXPECT(src.info()->is_resizable(), framework::LogLevel::ERRORS);
+        ARM_COMPUTE_EXPECT(dst_x.info()->is_resizable(), framework::LogLevel::ERRORS);
+        ARM_COMPUTE_EXPECT(dst_y.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+        // Allocate tensors
+        src.allocator()->allocate();
+        dst_x.allocator()->allocate();
+        dst_y.allocator()->allocate();
+
+        ARM_COMPUTE_EXPECT(!src.info()->is_resizable(), framework::LogLevel::ERRORS);
+        ARM_COMPUTE_EXPECT(!dst_x.info()->is_resizable(), framework::LogLevel::ERRORS);
+        ARM_COMPUTE_EXPECT(!dst_y.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+        // Fill tensors
+        fill(AccessorType(src));
+
+        // Compute function
+        sobel.run();
+
+        return std::make_pair(std::move(dst_x), std::move(dst_y));
+    }
+
+    std::pair<SimpleTensor<U>, SimpleTensor<U>> compute_reference(const TensorShape &shape, int filter_size, BorderMode border_mode, Format format, uint8_t constant_border_value)
+    {
+        // Create reference
+        SimpleTensor<T> src{ shape, format };
+
+        // Fill reference
+        fill(src);
+
+        return reference::sobel<U>(src, filter_size, border_mode, constant_border_value);
+    }
+
+    BorderMode _border_mode{ BorderMode::UNDEFINED };
+    std::pair<TensorType, TensorType>           _target{};
+    std::pair<SimpleTensor<U>, SimpleTensor<U>> _reference{};
+};
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
+#endif /* ARM_COMPUTE_TEST_SOBEL_FIXTURE */