| /* |
| * Copyright (c) 2016-2019 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/core/HOGInfo.h" |
| |
| #include "arm_compute/core/Error.h" |
| #include "arm_compute/core/Validate.h" |
| |
| using namespace arm_compute; |
| |
| HOGInfo::HOGInfo() |
| : _cell_size(), _block_size(), _detection_window_size(), _block_stride(), _num_bins(0), _normalization_type(HOGNormType::L2HYS_NORM), _l2_hyst_threshold(0.0f), _phase_type(PhaseType::UNSIGNED), |
| _descriptor_size(0) |
| { |
| } |
| |
| HOGInfo::HOGInfo(const Size2D &cell_size, const Size2D &block_size, const Size2D &detection_window_size, const Size2D &block_stride, size_t num_bins, |
| HOGNormType normalization_type, float l2_hyst_threshold, PhaseType phase_type) |
| : HOGInfo() |
| { |
| init(cell_size, block_size, detection_window_size, block_stride, num_bins, normalization_type, l2_hyst_threshold, phase_type); |
| } |
| |
| void HOGInfo::init(const Size2D &cell_size, const Size2D &block_size, const Size2D &detection_window_size, const Size2D &block_stride, size_t num_bins, |
| HOGNormType normalization_type, float l2_hyst_threshold, PhaseType phase_type) |
| { |
| ARM_COMPUTE_ERROR_ON_MSG((block_size.width % cell_size.width), "The block width must be multiple of cell width"); |
| ARM_COMPUTE_ERROR_ON_MSG((block_size.height % cell_size.height), "Block height must be multiple of cell height"); |
| ARM_COMPUTE_ERROR_ON_MSG((block_stride.width % cell_size.width), "Block stride width must be multiple of cell width"); |
| ARM_COMPUTE_ERROR_ON_MSG((block_stride.height % cell_size.height), "Block stride height must be multiple of cell height"); |
| ARM_COMPUTE_ERROR_ON_MSG(((detection_window_size.width - block_size.width) % block_stride.width), "Window width must be multiple of block width and block stride width"); |
| ARM_COMPUTE_ERROR_ON_MSG(((detection_window_size.height - block_size.height) % block_stride.height), "Window height must be multiple of block height and block stride height"); |
| |
| _cell_size = cell_size; |
| _block_size = block_size; |
| _detection_window_size = detection_window_size; |
| _block_stride = block_stride; |
| _num_bins = num_bins; |
| _normalization_type = normalization_type; |
| _l2_hyst_threshold = l2_hyst_threshold; |
| _phase_type = phase_type; |
| |
| // Compute descriptor size. +1 takes into account of the bias |
| _descriptor_size = num_cells_per_block().area() * num_block_positions_per_image(_detection_window_size).area() * _num_bins + 1; |
| } |
| |
| Size2D HOGInfo::num_cells_per_block() const |
| { |
| ARM_COMPUTE_ERROR_ON(_cell_size.width == 0 || _cell_size.height == 0); |
| |
| return Size2D{ _block_size.width / _cell_size.width, |
| _block_size.height / _cell_size.height }; |
| } |
| |
| Size2D HOGInfo::num_cells_per_block_stride() const |
| { |
| ARM_COMPUTE_ERROR_ON(_cell_size.width == 0 || _cell_size.height == 0); |
| |
| return Size2D{ _block_stride.width / _cell_size.width, |
| _block_stride.height / _cell_size.height }; |
| } |
| |
| Size2D HOGInfo::num_block_positions_per_image(const Size2D &image_size) const |
| { |
| ARM_COMPUTE_ERROR_ON(_block_stride.width == 0 || _block_stride.height == 0); |
| |
| return Size2D{ ((image_size.width - _block_size.width) / _block_stride.width) + 1, |
| ((image_size.height - _block_size.height) / _block_stride.height) + 1 }; |
| } |
| |
| const Size2D &HOGInfo::cell_size() const |
| { |
| return _cell_size; |
| } |
| |
| const Size2D &HOGInfo::block_size() const |
| { |
| return _block_size; |
| } |
| |
| const Size2D &HOGInfo::detection_window_size() const |
| { |
| return _detection_window_size; |
| } |
| |
| const Size2D &HOGInfo::block_stride() const |
| { |
| return _block_stride; |
| } |
| |
| size_t HOGInfo::num_bins() const |
| { |
| return _num_bins; |
| } |
| |
| HOGNormType HOGInfo::normalization_type() const |
| { |
| return _normalization_type; |
| } |
| |
| float HOGInfo::l2_hyst_threshold() const |
| { |
| return _l2_hyst_threshold; |
| } |
| |
| PhaseType HOGInfo::phase_type() const |
| { |
| return _phase_type; |
| } |
| |
| size_t HOGInfo::descriptor_size() const |
| { |
| return _descriptor_size; |
| } |