Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 1 | /* |
Anthony Barbier | e8a4983 | 2018-01-18 10:04:05 +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_NEHOGDETECTORKERNEL_H__ |
| 25 | #define __ARM_COMPUTE_NEHOGDETECTORKERNEL_H__ |
| 26 | |
| 27 | #include "arm_compute/core/IArray.h" |
| 28 | #include "arm_compute/core/IHOG.h" |
| 29 | #include "arm_compute/core/NEON/INEKernel.h" |
Michalis Spyrou | 07781ac | 2017-08-31 15:11:41 +0100 | [diff] [blame] | 30 | #include "support/Mutex.h" |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 31 | |
| 32 | namespace arm_compute |
| 33 | { |
| 34 | class ITensor; |
| 35 | |
| 36 | /** NEON kernel to perform HOG detector kernel using linear SVM */ |
| 37 | class NEHOGDetectorKernel : public INEKernel |
| 38 | { |
| 39 | public: |
Anthony Barbier | e8a4983 | 2018-01-18 10:04:05 +0000 | [diff] [blame] | 40 | const char *name() const override |
| 41 | { |
| 42 | return "NEHOGDetectorKernel"; |
| 43 | } |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 44 | /** Default constructor */ |
| 45 | NEHOGDetectorKernel(); |
| 46 | /** Prevent instances of this class from being copied (As this class contains pointers) */ |
| 47 | NEHOGDetectorKernel(const NEHOGDetectorKernel &) = delete; |
| 48 | /** Prevent instances of this class from being copied (As this class contains pointers) */ |
| 49 | NEHOGDetectorKernel &operator=(const NEHOGDetectorKernel &) = delete; |
| 50 | /** Allow instances of this class to be moved */ |
| 51 | NEHOGDetectorKernel(NEHOGDetectorKernel &&) = default; |
| 52 | /** Allow instances of this class to be moved */ |
| 53 | NEHOGDetectorKernel &operator=(NEHOGDetectorKernel &&) = default; |
| 54 | /** Default destructor */ |
| 55 | ~NEHOGDetectorKernel() = default; |
| 56 | |
| 57 | /** Initialise the kernel's input, HOG data-object, detection window, the stride of the detection window, the threshold and index of the object to detect |
| 58 | * |
| 59 | * @param[in] input Input tensor which stores the HOG descriptor obtained with @ref NEHOGOrientationBinningKernel. Data type supported: F32. Number of channels supported: equal to the number of histogram bins per block |
| 60 | * @param[in] hog HOG data object used by @ref NEHOGOrientationBinningKernel and @ref NEHOGBlockNormalizationKernel |
| 61 | * @param[out] detection_windows Array of @ref DetectionWindow. This array stores all the detected objects |
| 62 | * @param[in] detection_window_stride Distance in pixels between 2 consecutive detection windows in x and y directions. |
| 63 | * It must be multiple of the hog->info()->block_stride() |
| 64 | * @param[in] threshold (Optional) Threshold for the distance between features and SVM classifying plane |
| 65 | * @param[in] idx_class (Optional) Index of the class used for evaluating which class the detection window belongs to |
| 66 | */ |
| 67 | void configure(const ITensor *input, const IHOG *hog, IDetectionWindowArray *detection_windows, const Size2D &detection_window_stride, float threshold = 0.0f, uint16_t idx_class = 0); |
| 68 | |
| 69 | // Inherited methods overridden: |
Moritz Pflanzer | c186b57 | 2017-09-07 09:48:04 +0100 | [diff] [blame] | 70 | void run(const Window &window, const ThreadInfo &info) override; |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 71 | |
| 72 | private: |
| 73 | const ITensor *_input; |
| 74 | IDetectionWindowArray *_detection_windows; |
| 75 | const float *_hog_descriptor; |
| 76 | float _bias; |
| 77 | float _threshold; |
| 78 | uint16_t _idx_class; |
| 79 | size_t _num_bins_per_descriptor_x; |
| 80 | size_t _num_blocks_per_descriptor_y; |
| 81 | size_t _block_stride_width; |
| 82 | size_t _block_stride_height; |
| 83 | size_t _detection_window_width; |
| 84 | size_t _detection_window_height; |
| 85 | size_t _max_num_detection_windows; |
Michalis Spyrou | 07781ac | 2017-08-31 15:11:41 +0100 | [diff] [blame] | 86 | arm_compute::Mutex _mutex; |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 87 | }; |
Gian Marco Iodice | 356f643 | 2017-09-22 11:32:21 +0100 | [diff] [blame] | 88 | } // namespace arm_compute |
Anthony Barbier | 6ff3b19 | 2017-09-04 18:44:23 +0100 | [diff] [blame] | 89 | #endif /* __ARM_COMPUTE_NEHOGDETECTORKERNEL_H__ */ |