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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 "arm_compute/runtime/CL/functions/CLHOGDescriptor.h"
#include "arm_compute/core/Error.h"
#include "arm_compute/core/HOGInfo.h"
#include "arm_compute/core/Size2D.h"
#include "arm_compute/core/Validate.h"
#include "arm_compute/runtime/CL/CLScheduler.h"
using namespace arm_compute;
CLHOGDescriptor::CLHOGDescriptor(std::shared_ptr<IMemoryManager> memory_manager)
: _memory_group(std::move(memory_manager)), _gradient(), _orient_bin(), _block_norm(), _mag(), _phase(), _hog_space()
{
}
void CLHOGDescriptor::configure(ICLTensor *input, ICLTensor *output, const IHOG *hog, BorderMode border_mode, uint8_t constant_border_value)
{
ARM_COMPUTE_ERROR_ON_DATA_TYPE_CHANNEL_NOT_IN(input, 1, DataType::U8);
ARM_COMPUTE_ERROR_ON(nullptr == output);
ARM_COMPUTE_ERROR_ON(nullptr == hog);
const HOGInfo *hog_info = hog->info();
const size_t width = input->info()->dimension(Window::DimX);
const size_t height = input->info()->dimension(Window::DimY);
const size_t num_bins = hog_info->num_bins();
Size2D cell_size = hog_info->cell_size();
// Calculate number of cells along the x and y directions for the hog_space
const size_t num_cells_x = width / cell_size.width;
const size_t num_cells_y = height / cell_size.height;
// TensorShape of the input image
const TensorShape &shape_img = input->info()->tensor_shape();
// TensorShape of the hog space
TensorShape shape_hog_space = input->info()->tensor_shape();
shape_hog_space.set(Window::DimX, num_cells_x);
shape_hog_space.set(Window::DimY, num_cells_y);
// Intitialize tensors for magnitude, phase and hog space
TensorInfo info_mag(shape_img, Format::S16);
_mag.allocator()->init(info_mag);
TensorInfo info_phase(shape_img, Format::U8);
_phase.allocator()->init(info_phase);
TensorInfo info_space(shape_hog_space, num_bins, DataType::F32);
_hog_space.allocator()->init(info_space);
// Manage intermediate buffers
_memory_group.manage(&_mag);
_memory_group.manage(&_phase);
// Initialise gradient kernel
_gradient.configure(input, &_mag, &_phase, hog_info->phase_type(), border_mode, constant_border_value);
// Manage intermediate buffers
_memory_group.manage(&_hog_space);
// Initialise orientation binning kernel
_orient_bin.configure(&_mag, &_phase, &_hog_space, hog->info());
// Initialize HOG norm kernel
_block_norm.configure(&_hog_space, output, hog->info());
// Allocate intermediate tensors
_mag.allocator()->allocate();
_phase.allocator()->allocate();
_hog_space.allocator()->allocate();
}
void CLHOGDescriptor::run()
{
_memory_group.acquire();
// Run gradient
_gradient.run();
// Run orientation binning
CLScheduler::get().enqueue(_orient_bin, false);
// Run block normalization
CLScheduler::get().enqueue(_block_norm);
_memory_group.release();
}
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