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/*
* 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 "validation/Helpers.h"
using namespace arm_compute::test;
namespace arm_compute
{
namespace test
{
namespace validation
{
std::vector<ROI> generate_random_rois(const TensorShape &shape, const ROIPoolingLayerInfo &pool_info, unsigned int num_rois, std::random_device::result_type seed)
{
ARM_COMPUTE_ERROR_ON((pool_info.pooled_width() < 4) || (pool_info.pooled_height() < 4));
std::vector<ROI> rois;
std::mt19937 gen(seed);
const int pool_width = pool_info.pooled_width();
const int pool_height = pool_info.pooled_height();
const float roi_scale = pool_info.spatial_scale();
// Calculate distribution bounds
const auto scaled_width = static_cast<int>((shape.x() / roi_scale) / pool_width);
const auto scaled_height = static_cast<int>((shape.y() / roi_scale) / pool_height);
const auto min_width = static_cast<int>(pool_width / roi_scale);
const auto min_height = static_cast<int>(pool_height / roi_scale);
// Create distributions
std::uniform_int_distribution<int> dist_batch(0, shape[3] - 1);
std::uniform_int_distribution<int> dist_x(0, scaled_width);
std::uniform_int_distribution<int> dist_y(0, scaled_height);
std::uniform_int_distribution<int> dist_w(min_width, std::max(min_width, (pool_width - 2) * scaled_width));
std::uniform_int_distribution<int> dist_h(min_height, std::max(min_height, (pool_height - 2) * scaled_height));
for(unsigned int r = 0; r < num_rois; ++r)
{
ROI roi{};
roi.batch_idx = dist_batch(gen);
roi.rect.x = dist_x(gen);
roi.rect.y = dist_y(gen);
roi.rect.width = dist_w(gen);
roi.rect.height = dist_h(gen);
rois.push_back(roi);
}
return rois;
}
} // namespace validation
} // namespace test
} // namespace arm_compute
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