COMPMID-424 Implemented reference implementation and validation tests (NEON and CL) for Warp Perspective

Changed the behaviour in NEWarpKernel for border mode replicate and constant to stick with the VX specs.
When the new coords are out of the valid region, the output will be computed using the values from the border.
In the validation tests the validate will be called with tolerance_value 1 and tolerance_number 0.2%, due to some float arithmetic related mismatches.

Change-Id: Id4f9d0ef87178f8f8fd38ee17fee0e6f4beb85cd
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/80283
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Moritz Pflanzer <moritz.pflanzer@arm.com>
Reviewed-by: Steven Niu <steven.niu@arm.com>

1 files changed, 208 insertions, 0 deletions

diff --git a/tests/validation/CL/WarpPerspective.cpp b/tests/validation/CL/WarpPerspective.cpp
new file mode 100644
index 0000000000..260b22be03
--- /dev/null
+++ b/tests/validation/CL/WarpPerspective.cpp
@@ -0,0 +1,208 @@
+/*
+ * 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 "AssetsLibrary.h"
+#include "CL/CLAccessor.h"
+#include "Globals.h"
+#include "PaddingCalculator.h"
+#include "TypePrinter.h"
+#include "Utils.h"
+#include "validation/Datasets.h"
+#include "validation/Helpers.h"
+#include "validation/Reference.h"
+#include "validation/Validation.h"
+#include "validation/ValidationUserConfiguration.h"
+
+#include "arm_compute/core/Helpers.h"
+#include "arm_compute/core/Types.h"
+#include "arm_compute/runtime/CL/functions/CLWarpPerspective.h"
+#include "arm_compute/runtime/Tensor.h"
+#include "arm_compute/runtime/TensorAllocator.h"
+
+#include "boost_wrapper.h"
+
+#include <random>
+#include <string>
+
+using namespace arm_compute;
+using namespace arm_compute::test;
+using namespace arm_compute::test::validation;
+
+namespace
+{
+/** Compute Warp Perspective function.
+ *
+ * @param[in] input                 Shape of the input and output tensors.
+ * @param[in] matrix                The perspective matrix. Must be 3x3 of type float.
+ * @param[in] policy                The interpolation type.
+ * @param[in] border_mode           Strategy to use for borders.
+ * @param[in] constant_border_value Constant value to use for borders if border_mode is set to CONSTANT.
+ *
+ * @return Computed output tensor.
+ */
+CLTensor compute_warp_perspective(const TensorShape &shape, const float *matrix, InterpolationPolicy policy,
+                                  BorderMode border_mode, uint8_t constant_border_value)
+{
+    // Create tensors
+    CLTensor src = create_tensor<CLTensor>(shape, DataType::U8);
+    CLTensor dst = create_tensor<CLTensor>(shape, DataType::U8);
+
+    // Create and configure function
+    CLWarpPerspective warp_perspective;
+    warp_perspective.configure(&src, &dst, matrix, policy, border_mode, constant_border_value);
+
+    // Allocate tensors
+    src.allocator()->allocate();
+    dst.allocator()->allocate();
+
+    BOOST_TEST(!src.info()->is_resizable());
+    BOOST_TEST(!dst.info()->is_resizable());
+
+    // Fill tensors
+    library->fill_tensor_uniform(CLAccessor(src), 0);
+
+    // Compute function
+    warp_perspective.run();
+
+    return dst;
+}
+} // namespace
+
+#ifndef DOXYGEN_SKIP_THIS
+BOOST_AUTO_TEST_SUITE(CL)
+BOOST_AUTO_TEST_SUITE(WarpPerspective)
+
+BOOST_TEST_DECORATOR(*boost::unit_test::label("precommit") * boost::unit_test::label("nightly"))
+BOOST_DATA_TEST_CASE(Configuration, (SmallShapes() + LargeShapes())
+                     * boost::unit_test::data::make({ InterpolationPolicy::BILINEAR, InterpolationPolicy::NEAREST_NEIGHBOR }) * BorderModes(),
+                     shape, policy, border_mode)
+{
+    uint8_t constant_border_value = 0;
+
+    // Generate a random constant value if border_mode is constant
+    if(border_mode == BorderMode::CONSTANT)
+    {
+        std::mt19937                           gen(user_config.seed.get());
+        std::uniform_int_distribution<uint8_t> distribution_u8(0, 255);
+        constant_border_value = distribution_u8(gen);
+    }
+
+    std::array<float, 9> matrix;
+    fill_warp_matrix<9>(matrix, 3, 3);
+
+    // Create tensors
+    CLTensor src = create_tensor<CLTensor>(shape, DataType::U8);
+    CLTensor dst = create_tensor<CLTensor>(shape, DataType::U8);
+
+    BOOST_TEST(src.info()->is_resizable());
+    BOOST_TEST(dst.info()->is_resizable());
+
+    // Create and configure function
+    CLWarpPerspective warp_perspective;
+    warp_perspective.configure(&src, &dst, matrix.data(), policy, border_mode, constant_border_value);
+
+    // Validate valid region
+    const ValidRegion valid_region = shape_to_valid_region(shape);
+
+    validate(src.info()->valid_region(), valid_region);
+    validate(dst.info()->valid_region(), valid_region);
+
+    // Validate padding
+    PaddingCalculator calculator(shape.x(), 4);
+    calculator.set_border_mode(border_mode);
+
+    const PaddingSize read_padding(1);
+    const PaddingSize write_padding = calculator.required_padding(PaddingCalculator::Option::EXCLUDE_BORDER);
+
+    validate(src.info()->padding(), read_padding);
+    validate(dst.info()->padding(), write_padding);
+}
+
+BOOST_TEST_DECORATOR(*boost::unit_test::label("precommit"))
+BOOST_DATA_TEST_CASE(RunSmall, SmallShapes()
+                     * boost::unit_test::data::make({ InterpolationPolicy::BILINEAR, InterpolationPolicy::NEAREST_NEIGHBOR })
+                     * BorderModes(),
+                     shape, policy, border_mode)
+{
+    uint8_t constant_border_value = 0;
+
+    // Generate a random constant value if border_mode is constant
+    if(border_mode == BorderMode::CONSTANT)
+    {
+        std::mt19937                           gen(user_config.seed.get());
+        std::uniform_int_distribution<uint8_t> distribution_u8(0, 255);
+        constant_border_value = distribution_u8(gen);
+    }
+
+    // Create the valid mask Tensor
+    RawTensor valid_mask(shape, DataType::U8);
+
+    // Create the matrix
+    std::array<float, 9> matrix;
+    fill_warp_matrix<9>(matrix, 3, 3);
+
+    // Compute function
+    CLTensor dst = compute_warp_perspective(shape, matrix.data(), policy, border_mode, constant_border_value);
+
+    // Compute reference
+    RawTensor ref_dst = Reference::compute_reference_warp_perspective(shape, valid_mask, matrix.data(), policy, border_mode, constant_border_value);
+
+    // Validate output
+    validate(CLAccessor(dst), ref_dst, valid_mask, 1, 0.2f);
+}
+
+BOOST_TEST_DECORATOR(*boost::unit_test::label("nightly"))
+BOOST_DATA_TEST_CASE(RunLarge, LargeShapes()
+                     * boost::unit_test::data::make({ InterpolationPolicy::NEAREST_NEIGHBOR, InterpolationPolicy::BILINEAR }) * BorderModes(),
+                     shape, policy, border_mode)
+{
+    uint8_t constant_border_value = 0;
+
+    // Generate a random constant value if border_mode is constant
+    if(border_mode == BorderMode::CONSTANT)
+    {
+        std::mt19937                           gen(user_config.seed.get());
+        std::uniform_int_distribution<uint8_t> distribution_u8(0, 255);
+        constant_border_value = distribution_u8(gen);
+    }
+
+    // Create the valid mask Tensor
+    RawTensor valid_mask(shape, DataType::U8);
+
+    // Create the matrix
+    std::array<float, 9> matrix;
+    fill_warp_matrix<9>(matrix, 3, 3);
+
+    // Compute function
+    CLTensor dst = compute_warp_perspective(shape, matrix.data(), policy, border_mode, constant_border_value);
+
+    // Compute reference
+    RawTensor ref_dst = Reference::compute_reference_warp_perspective(shape, valid_mask, matrix.data(), policy, border_mode, constant_border_value);
+
+    // Validate output
+    validate(CLAccessor(dst), ref_dst, valid_mask, 1, 0.2f);
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+BOOST_AUTO_TEST_SUITE_END()
+#endif /* DOXYGEN_SKIP_THIS */