Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 1 | /* |
John Richardson | 684cb0f | 2018-01-09 11:17:00 +0000 | [diff] [blame] | 2 | * Copyright (c) 2016-2018 ARM Limited. |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 3 | * |
| 4 | * SPDX-License-Identifier: MIT |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to |
| 8 | * deal in the Software without restriction, including without limitation the |
| 9 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| 10 | * sell copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in all |
| 14 | * copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 22 | * SOFTWARE. |
| 23 | */ |
| 24 | #ifndef __ARM_COMPUTE_HOGINFO_H__ |
| 25 | #define __ARM_COMPUTE_HOGINFO_H__ |
| 26 | |
| 27 | #include "arm_compute/core/Size2D.h" |
| 28 | #include "arm_compute/core/Types.h" |
| 29 | |
| 30 | #include <cstddef> |
| 31 | |
| 32 | namespace arm_compute |
| 33 | { |
| 34 | /** Store the HOG's metadata */ |
| 35 | class HOGInfo |
| 36 | { |
| 37 | public: |
| 38 | /** Default constructor */ |
| 39 | HOGInfo(); |
| 40 | /** Default destructor */ |
| 41 | virtual ~HOGInfo() = default; |
| 42 | /** Allow instances of this class to be copy constructed */ |
| 43 | HOGInfo(const HOGInfo &) = default; |
| 44 | /** Allow instances of this class to be copied */ |
| 45 | HOGInfo &operator=(const HOGInfo &) = default; |
| 46 | /** Allow instances of this class to be move constructed */ |
| 47 | HOGInfo(HOGInfo &&) = default; |
| 48 | /** Allow instances of this class to be moved */ |
| 49 | HOGInfo &operator=(HOGInfo &&) = default; |
| 50 | /** Constructor |
| 51 | * |
| 52 | * @param[in] cell_size Cell size in pixels |
| 53 | * @param[in] block_size Block size in pixels. Must be a multiple of cell_size. |
| 54 | * @param[in] detection_window_size Detection window size in pixels. Must be a multiple of block_size and block_stride. |
| 55 | * @param[in] block_stride Distance in pixels between 2 consecutive blocks along the x and y direction. Must be a multiple of cell size |
| 56 | * @param[in] num_bins Number of histogram bins for each cell |
| 57 | * @param[in] normalization_type (Optional) Normalization type to use for each block |
| 58 | * @param[in] l2_hyst_threshold (Optional) Threshold used for L2HYS_NORM normalization method |
| 59 | * @param[in] phase_type (Optional) Type of @ref PhaseType |
| 60 | */ |
| 61 | HOGInfo(const Size2D &cell_size, const Size2D &block_size, const Size2D &detection_window_size, const Size2D &block_stride, size_t num_bins, |
| 62 | HOGNormType normalization_type = HOGNormType::L2HYS_NORM, float l2_hyst_threshold = 0.2f, PhaseType phase_type = PhaseType::UNSIGNED); |
| 63 | /** Initialize the metadata structure with the given parameters |
| 64 | * |
| 65 | * @param[in] cell_size Cell size in pixels |
| 66 | * @param[in] block_size Block size in pixels. Must be a multiple of cell_size. |
| 67 | * @param[in] detection_window_size Detection window size in pixels. Must be a multiple of block_size and block_stride. |
| 68 | * @param[in] block_stride Distance in pixels between 2 consecutive blocks along the x and y direction. Must be a multiple of cell size |
| 69 | * @param[in] num_bins Number of histogram bins for each cell |
| 70 | * @param[in] normalization_type (Optional) Normalization type to use for each block |
| 71 | * @param[in] l2_hyst_threshold (Optional) Threshold used for L2HYS_NORM normalization method |
| 72 | * @param[in] phase_type (Optional) Type of @ref PhaseType |
| 73 | */ |
| 74 | void init(const Size2D &cell_size, const Size2D &block_size, const Size2D &detection_window_size, const Size2D &block_stride, size_t num_bins, |
| 75 | HOGNormType normalization_type = HOGNormType::L2HYS_NORM, float l2_hyst_threshold = 0.2f, PhaseType phase_type = PhaseType::UNSIGNED); |
| 76 | /** The cell size in pixels |
| 77 | * |
| 78 | * @return The cell size in pixels |
| 79 | */ |
| 80 | const Size2D &cell_size() const; |
| 81 | /** The block size in pixels |
| 82 | * |
| 83 | * @return The block size in pixels |
| 84 | */ |
| 85 | const Size2D &block_size() const; |
| 86 | /** The detection window size in pixels |
| 87 | * |
| 88 | * @return The detection window size in pixels |
| 89 | */ |
| 90 | const Size2D &detection_window_size() const; |
| 91 | /** The block stride in pixels. The block stride is the distance between 2 consecutive blocks |
| 92 | * |
| 93 | * @return The block stride in pixels |
| 94 | */ |
| 95 | const Size2D &block_stride() const; |
| 96 | /** The number of histogram bins for each cell |
| 97 | * |
| 98 | * @return The number of histogram bins for each cell |
| 99 | */ |
| 100 | size_t num_bins() const; |
| 101 | /** The normalization type |
| 102 | * |
| 103 | * @return The normalization type |
| 104 | */ |
| 105 | HOGNormType normalization_type() const; |
| 106 | /** Threshold used for L2HYS_NORM normalization type |
| 107 | * |
| 108 | * @return Threshold used for L2HYS_NORM normalization type |
| 109 | */ |
| 110 | float l2_hyst_threshold() const; |
| 111 | /** The type of @ref PhaseType |
| 112 | * |
| 113 | * @return The type of @ref PhaseType |
| 114 | */ |
| 115 | PhaseType phase_type() const; |
| 116 | /** The size of HOG descriptor |
| 117 | * |
| 118 | * @return The size of HOG descriptor |
| 119 | */ |
| 120 | size_t descriptor_size() const; |
| 121 | /** Calculates the number of cells for each block |
| 122 | * |
| 123 | * @return The Size2D data object which stores the number of cells along the x and y directions |
| 124 | */ |
| 125 | Size2D num_cells_per_block() const; |
John Richardson | 25f2368 | 2017-11-27 14:35:09 +0000 | [diff] [blame] | 126 | |
| 127 | /** Calculates the number of cells per block stride |
| 128 | * |
| 129 | * @return The Size2D data object which stores the number of cells per block stride along the x and y directions |
| 130 | */ |
| 131 | Size2D num_cells_per_block_stride() const; |
John Richardson | 684cb0f | 2018-01-09 11:17:00 +0000 | [diff] [blame] | 132 | /** Calculates the number of block positions for the given image size |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 133 | * |
| 134 | * @param[in] image_size The input image size data object |
| 135 | * |
John Richardson | 684cb0f | 2018-01-09 11:17:00 +0000 | [diff] [blame] | 136 | * @return The Size2D data object which stores the number of block positions along the x and y directions |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 137 | */ |
John Richardson | 684cb0f | 2018-01-09 11:17:00 +0000 | [diff] [blame] | 138 | Size2D num_block_positions_per_image(const Size2D &image_size) const; |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 139 | |
| 140 | private: |
| 141 | Size2D _cell_size; |
| 142 | Size2D _block_size; |
| 143 | Size2D _detection_window_size; |
| 144 | Size2D _block_stride; |
| 145 | size_t _num_bins; |
| 146 | HOGNormType _normalization_type; |
| 147 | float _l2_hyst_threshold; |
| 148 | PhaseType _phase_type; |
| 149 | size_t _descriptor_size; |
| 150 | }; |
| 151 | } |
| 152 | #endif /*__ARM_COMPUTE_HOGINFO_H__ */ |