COMPMID-578: Implement FAST corners for CL/NEON

Change-Id: Ifa74e2bf05546de9a49aa185e22fba50438d8ad6
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/113946
Tested-by: Jenkins <bsgcomp@arm.com>
Reviewed-by: Pablo Tello <pablo.tello@arm.com>

1 files changed, 134 insertions, 0 deletions

diff --git a/tests/validation/fixtures/FastCornersFixture.h b/tests/validation/fixtures/FastCornersFixture.h
new file mode 100644
index 0000000000..0b827f74b5
--- /dev/null
+++ b/tests/validation/fixtures/FastCornersFixture.h
@@ -0,0 +1,134 @@
+/*
+ * Copyright (c) 2017-2018 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_FAST_CORNERS_FIXTURE
+#define ARM_COMPUTE_TEST_FAST_CORNERS_FIXTURE
+
+#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/FastCorners.h"
+
+#include <random>
+
+namespace arm_compute
+{
+class CLFastCorners;
+class NEFastCorners;
+
+namespace test
+{
+namespace validation
+{
+template <typename TensorType, typename AccessorType, typename ArrayType, typename FunctionType, typename T>
+class FastCornersValidationFixture : public framework::Fixture
+{
+public:
+    template <typename...>
+    void setup(TensorShape shape, Format format, bool suppress_nonmax, BorderMode border_mode)
+    {
+        std::mt19937                           gen(library->seed());
+        std::uniform_int_distribution<uint8_t> int_dist(0, 255);
+        std::uniform_real_distribution<float>  real_dist(0, 255);
+
+        const uint8_t constant_border_value = int_dist(gen);
+        const float   threshold             = real_dist(gen);
+
+        _target    = compute_target(shape, format, threshold, suppress_nonmax, border_mode, constant_border_value);
+        _reference = compute_reference(shape, format, threshold, suppress_nonmax, border_mode, constant_border_value);
+    }
+
+protected:
+    template <typename U>
+    void fill(U &&tensor)
+    {
+        library->fill_tensor_uniform(tensor, 0);
+    }
+
+    template <typename F, typename std::enable_if<std::is_same<F, CLFastCorners>::value, int>::type = 0>
+    void configure_target(F &func, TensorType &src, ArrayType &corners, unsigned int *num_corners, float threshold, bool suppress_nonmax, BorderMode border_mode, uint8_t constant_border_value)
+    {
+        func.configure(&src, threshold, suppress_nonmax, &corners, num_corners, border_mode, constant_border_value);
+    }
+
+    template <typename F, typename std::enable_if<std::is_same<F, NEFastCorners>::value, int>::type = 0>
+    void configure_target(F &func, TensorType &src, ArrayType &corners, unsigned int *num_corners, float threshold, bool suppress_nonmax, BorderMode border_mode, uint8_t constant_border_value)
+    {
+        ARM_COMPUTE_UNUSED(num_corners);
+        // ARM_COMPUTE_ERROR_ON(num_corners);
+        func.configure(&src, threshold, suppress_nonmax, &corners, border_mode, constant_border_value);
+    }
+
+    ArrayType compute_target(const TensorShape &shape, Format format, float threshold, bool suppress_nonmax, BorderMode border_mode, uint8_t constant_border_value)
+    {
+        // Create tensors
+        TensorType src = create_tensor<TensorType>(shape, data_type_from_format(format));
+        src.info()->set_format(format);
+
+        // Create array of keypoints
+        ArrayType    corners(shape.total_size());
+        unsigned int num_corners = shape.total_size();
+
+        // Create and configure function
+        FunctionType fast_corners;
+        configure_target<FunctionType>(fast_corners, src, corners, &num_corners, threshold, suppress_nonmax, border_mode, constant_border_value);
+
+        ARM_COMPUTE_EXPECT(src.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+        // Allocate tensors
+        src.allocator()->allocate();
+
+        ARM_COMPUTE_EXPECT(!src.info()->is_resizable(), framework::LogLevel::ERRORS);
+
+        // Fill tensors
+        fill(AccessorType(src));
+
+        // Compute function
+        fast_corners.run();
+
+        return corners;
+    }
+
+    std::vector<KeyPoint> compute_reference(const TensorShape &shape, Format format, float threshold, bool suppress_nonmax, BorderMode border_mode, uint8_t constant_border_value)
+    {
+        // Create reference
+        SimpleTensor<T> src{ shape, format };
+
+        // Fill reference
+        fill(src);
+
+        // Compute reference
+        return reference::fast_corners<T>(src, threshold, suppress_nonmax, border_mode, constant_border_value);
+    }
+
+    ArrayType             _target{};
+    std::vector<KeyPoint> _reference{};
+};
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
+#endif /* ARM_COMPUTE_TEST_FAST_CORNERS_FIXTURE */