COMPMID-596: Port HOGDetector to new validation

Change-Id: I73231fc71c5166268e6c909b7930b7e034f3794e
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/118876
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Tested-by: Jenkins <bsgcomp@arm.com>

1 files changed, 138 insertions, 0 deletions

diff --git a/tests/validation/fixtures/HOGDetectorFixture.h b/tests/validation/fixtures/HOGDetectorFixture.h
new file mode 100644
index 0000000000..c2d0514d11
--- /dev/null
+++ b/tests/validation/fixtures/HOGDetectorFixture.h
@@ -0,0 +1,138 @@
+/*
+ * 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_HOG_DETECTOR_FIXTURE
+#define ARM_COMPUTE_TEST_HOG_DETECTOR_FIXTURE
+
+#include "arm_compute/core/HOGInfo.h"
+#include "arm_compute/core/Types.h"
+#include "tests/AssetsLibrary.h"
+#include "tests/Globals.h"
+#include "tests/IAccessor.h"
+#include "tests/IHOGAccessor.h"
+#include "tests/framework/Asserts.h"
+#include "tests/framework/Fixture.h"
+#include "tests/validation/fixtures/HOGDescriptorFixture.h"
+#include "tests/validation/reference/HOGDetector.h"
+
+namespace arm_compute
+{
+namespace test
+{
+namespace validation
+{
+template <typename TensorType,
+          typename HOGType,
+          typename DetectionWindowArrayType,
+          typename HOGDescriptorType,
+          typename AccessorType,
+          typename ArrayAccessorType,
+          typename HOGAccessorType,
+          typename HOGDetectorType,
+          typename T,
+          typename U>
+class HOGDetectorValidationFixture : public HOGDescriptorValidationFixture<TensorType, HOGType, AccessorType, HOGDescriptorType, T, U>
+{
+public:
+    template <typename...>
+    void setup(Size2D detection_window_stride, std::string image, HOGInfo hog_info, Format format, BorderMode border_mode)
+    {
+        using HDF = HOGDescriptorValidationFixture<TensorType, HOGType, AccessorType, HOGDescriptorType, T, U>;
+        HDF::setup(image, hog_info, format, border_mode);
+
+        const unsigned int max_num_detection_windows = 100000;
+
+        // Initialise descriptor (linear SVM coefficients).
+        // NOTE: Fixed values are used to keep the number of detection windows detected
+        // consistent in order to have meaningful validation tolerances.
+        // The values are "unbalanced" to reduce the number of detected objects
+        std::random_device::result_type seed       = 0;
+        std::vector<U>                  descriptor = generate_random_real(hog_info.descriptor_size(), -0.505f, 0.495f, seed);
+
+        // Compute target and reference values using feature vector from descriptor kernel
+        _target    = compute_target(HDF::_target, descriptor, max_num_detection_windows, hog_info, detection_window_stride);
+        _reference = compute_reference(HDF::_reference, descriptor, max_num_detection_windows, hog_info, detection_window_stride);
+    }
+
+protected:
+    std::vector<DetectionWindow> compute_target(const TensorType &src, const std::vector<U> &descriptor, unsigned int max_num_detection_windows,
+                                                const HOGInfo &hog_info, const Size2D &detection_window_stride)
+    {
+        // Create HOG
+        HOGType hog = create_HOG<HOGType>(hog_info);
+
+        // Create array of detection windows
+        DetectionWindowArrayType detection_windows(max_num_detection_windows);
+
+        // Copy HOG descriptor values to HOG memory
+        {
+            HOGAccessorType hog_accessor(hog);
+            std::memcpy(hog_accessor.descriptor(), descriptor.data(), descriptor.size() * sizeof(U));
+        }
+
+        // Create and configure function
+        HOGDetectorType hog_detector;
+        hog_detector.configure(&src, &hog, &detection_windows, detection_window_stride);
+
+        // Reset detection windows
+        detection_windows.clear();
+
+        // Compute function
+        hog_detector.run();
+
+        // Create array of detection windows
+        std::vector<DetectionWindow> windows;
+
+        // Copy detection windows
+        ArrayAccessorType accessor(detection_windows);
+
+        for(size_t i = 0; i < accessor.num_values(); i++)
+        {
+            DetectionWindow win;
+            win.x         = accessor.at(i).x;
+            win.y         = accessor.at(i).y;
+            win.width     = accessor.at(i).width;
+            win.height    = accessor.at(i).height;
+            win.idx_class = accessor.at(i).idx_class;
+            win.score     = accessor.at(i).score;
+
+            windows.push_back(win);
+        }
+
+        return windows;
+    }
+
+    std::vector<DetectionWindow> compute_reference(const SimpleTensor<U> &src, const std::vector<U> &descriptor, unsigned int max_num_detection_windows,
+                                                   const HOGInfo &hog_info, const Size2D &detection_window_stride)
+    {
+        // Assumes defaults value of zero for threshold and class_idx.
+        return reference::hog_detector(src, descriptor, max_num_detection_windows, hog_info, detection_window_stride);
+    }
+
+    std::vector<DetectionWindow> _target{};
+    std::vector<DetectionWindow> _reference{};
+};
+} // namespace validation
+} // namespace test
+} // namespace arm_compute
+#endif /* ARM_COMPUTE_TEST_HOG_DETECTOR_FIXTURE */