Dana Zlotnik | 3475ffe | 2022-01-03 14:37:10 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2019-2022 Arm Limited. |
| 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 | #include "src/cpu/kernels/boundingboxtransform/generic/neon/impl.h" |
| 25 | namespace arm_compute |
| 26 | { |
| 27 | namespace cpu |
| 28 | { |
| 29 | void bounding_box_transform_qsymm16(const ITensor *boxes, ITensor *pred_boxes, const ITensor *deltas, BoundingBoxTransformInfo bbinfo, const Window &window) |
| 30 | |
| 31 | { |
| 32 | const size_t num_classes = deltas->info()->tensor_shape()[0] >> 2; |
| 33 | const size_t deltas_width = deltas->info()->tensor_shape()[0]; |
| 34 | const int img_h = std::floor(bbinfo.img_height() / bbinfo.scale() + 0.5f); |
| 35 | const int img_w = std::floor(bbinfo.img_width() / bbinfo.scale() + 0.5f); |
| 36 | |
| 37 | const auto scale_after = (bbinfo.apply_scale() ? bbinfo.scale() : 1.f); |
| 38 | const auto scale_before = bbinfo.scale(); |
| 39 | const auto offset = (bbinfo.correct_transform_coords() ? 1.f : 0.f); |
| 40 | |
| 41 | auto pred_ptr = reinterpret_cast<uint16_t *>(pred_boxes->buffer() + pred_boxes->info()->offset_first_element_in_bytes()); |
| 42 | auto delta_ptr = reinterpret_cast<uint8_t *>(deltas->buffer() + deltas->info()->offset_first_element_in_bytes()); |
| 43 | |
| 44 | const auto boxes_qinfo = boxes->info()->quantization_info().uniform(); |
| 45 | const auto deltas_qinfo = deltas->info()->quantization_info().uniform(); |
| 46 | const auto pred_qinfo = pred_boxes->info()->quantization_info().uniform(); |
| 47 | |
| 48 | Iterator box_it(boxes, window); |
| 49 | execute_window_loop(window, [&](const Coordinates & id) |
| 50 | { |
| 51 | const auto ptr = reinterpret_cast<uint16_t *>(box_it.ptr()); |
| 52 | const auto b0 = dequantize_qasymm16(*ptr, boxes_qinfo); |
| 53 | const auto b1 = dequantize_qasymm16(*(ptr + 1), boxes_qinfo); |
| 54 | const auto b2 = dequantize_qasymm16(*(ptr + 2), boxes_qinfo); |
| 55 | const auto b3 = dequantize_qasymm16(*(ptr + 3), boxes_qinfo); |
| 56 | const float width = (b2 / scale_before) - (b0 / scale_before) + 1.f; |
| 57 | const float height = (b3 / scale_before) - (b1 / scale_before) + 1.f; |
| 58 | const float ctr_x = (b0 / scale_before) + 0.5f * width; |
| 59 | const float ctr_y = (b1 / scale_before) + 0.5f * height; |
| 60 | for(size_t j = 0; j < num_classes; ++j) |
| 61 | { |
| 62 | // Extract deltas |
| 63 | const size_t delta_id = id.y() * deltas_width + 4u * j; |
| 64 | const float dx = dequantize_qasymm8(delta_ptr[delta_id], deltas_qinfo) / bbinfo.weights()[0]; |
| 65 | const float dy = dequantize_qasymm8(delta_ptr[delta_id + 1], deltas_qinfo) / bbinfo.weights()[1]; |
| 66 | float dw = dequantize_qasymm8(delta_ptr[delta_id + 2], deltas_qinfo) / bbinfo.weights()[2]; |
| 67 | float dh = dequantize_qasymm8(delta_ptr[delta_id + 3], deltas_qinfo) / bbinfo.weights()[3]; |
| 68 | // Clip dw and dh |
| 69 | dw = std::min(dw, bbinfo.bbox_xform_clip()); |
| 70 | dh = std::min(dh, bbinfo.bbox_xform_clip()); |
| 71 | // Determine the predictions |
| 72 | const float pred_ctr_x = dx * width + ctr_x; |
| 73 | const float pred_ctr_y = dy * height + ctr_y; |
| 74 | const float pred_w = std::exp(dw) * width; |
| 75 | const float pred_h = std::exp(dh) * height; |
| 76 | // Store the prediction into the output tensor |
| 77 | pred_ptr[delta_id] = quantize_qasymm16(scale_after * utility::clamp<float>(pred_ctr_x - 0.5f * pred_w, 0.f, img_w - 1.f), pred_qinfo); |
| 78 | pred_ptr[delta_id + 1] = quantize_qasymm16(scale_after * utility::clamp<float>(pred_ctr_y - 0.5f * pred_h, 0.f, img_h - 1.f), pred_qinfo); |
| 79 | pred_ptr[delta_id + 2] = quantize_qasymm16(scale_after * utility::clamp<float>(pred_ctr_x + 0.5f * pred_w - offset, 0.f, img_w - 1.f), pred_qinfo); |
| 80 | pred_ptr[delta_id + 3] = quantize_qasymm16(scale_after * utility::clamp<float>(pred_ctr_y + 0.5f * pred_h - offset, 0.f, img_h - 1.f), pred_qinfo); |
| 81 | } |
| 82 | }, |
| 83 | box_it); |
| 84 | } |
| 85 | |
| 86 | template <typename T> |
| 87 | void bounding_box_transform(const ITensor *boxes, ITensor *pred_boxes, const ITensor *deltas, BoundingBoxTransformInfo bbinfo, const Window &window) |
| 88 | { |
| 89 | const size_t num_classes = deltas->info()->tensor_shape()[0] >> 2; |
| 90 | const size_t deltas_width = deltas->info()->tensor_shape()[0]; |
| 91 | const int img_h = std::floor(bbinfo.img_height() / bbinfo.scale() + 0.5f); |
| 92 | const int img_w = std::floor(bbinfo.img_width() / bbinfo.scale() + 0.5f); |
| 93 | |
| 94 | const auto scale_after = (bbinfo.apply_scale() ? T(bbinfo.scale()) : T(1)); |
| 95 | const auto scale_before = T(bbinfo.scale()); |
| 96 | ARM_COMPUTE_ERROR_ON(scale_before <= 0); |
| 97 | const auto offset = (bbinfo.correct_transform_coords() ? T(1.f) : T(0.f)); |
| 98 | |
| 99 | auto pred_ptr = reinterpret_cast<T *>(pred_boxes->buffer() + pred_boxes->info()->offset_first_element_in_bytes()); |
| 100 | auto delta_ptr = reinterpret_cast<T *>(deltas->buffer() + deltas->info()->offset_first_element_in_bytes()); |
| 101 | |
| 102 | Iterator box_it(boxes, window); |
| 103 | execute_window_loop(window, [&](const Coordinates & id) |
| 104 | { |
| 105 | const auto ptr = reinterpret_cast<T *>(box_it.ptr()); |
| 106 | const auto b0 = *ptr; |
| 107 | const auto b1 = *(ptr + 1); |
| 108 | const auto b2 = *(ptr + 2); |
| 109 | const auto b3 = *(ptr + 3); |
| 110 | const T width = (b2 / scale_before) - (b0 / scale_before) + T(1.f); |
| 111 | const T height = (b3 / scale_before) - (b1 / scale_before) + T(1.f); |
| 112 | const T ctr_x = (b0 / scale_before) + T(0.5f) * width; |
| 113 | const T ctr_y = (b1 / scale_before) + T(0.5f) * height; |
| 114 | for(size_t j = 0; j < num_classes; ++j) |
| 115 | { |
| 116 | // Extract deltas |
| 117 | const size_t delta_id = id.y() * deltas_width + 4u * j; |
| 118 | const T dx = delta_ptr[delta_id] / T(bbinfo.weights()[0]); |
| 119 | const T dy = delta_ptr[delta_id + 1] / T(bbinfo.weights()[1]); |
| 120 | T dw = delta_ptr[delta_id + 2] / T(bbinfo.weights()[2]); |
| 121 | T dh = delta_ptr[delta_id + 3] / T(bbinfo.weights()[3]); |
| 122 | // Clip dw and dh |
| 123 | dw = std::min(dw, T(bbinfo.bbox_xform_clip())); |
| 124 | dh = std::min(dh, T(bbinfo.bbox_xform_clip())); |
| 125 | // Determine the predictions |
| 126 | const T pred_ctr_x = dx * width + ctr_x; |
| 127 | const T pred_ctr_y = dy * height + ctr_y; |
| 128 | const T pred_w = std::exp(dw) * width; |
| 129 | const T pred_h = std::exp(dh) * height; |
| 130 | // Store the prediction into the output tensor |
| 131 | pred_ptr[delta_id] = scale_after * utility::clamp<T>(pred_ctr_x - T(0.5f) * pred_w, T(0), T(img_w - 1)); |
| 132 | pred_ptr[delta_id + 1] = scale_after * utility::clamp<T>(pred_ctr_y - T(0.5f) * pred_h, T(0), T(img_h - 1)); |
| 133 | pred_ptr[delta_id + 2] = scale_after * utility::clamp<T>(pred_ctr_x + T(0.5f) * pred_w - offset, T(0), T(img_w - 1)); |
| 134 | pred_ptr[delta_id + 3] = scale_after * utility::clamp<T>(pred_ctr_y + T(0.5f) * pred_h - offset, T(0), T(img_h - 1)); |
| 135 | } |
| 136 | }, |
| 137 | box_it); |
| 138 | } |
| 139 | |
| 140 | template void bounding_box_transform<float>(const ITensor *boxes, ITensor *pred_boxes, const ITensor *deltas, BoundingBoxTransformInfo bbinfo, const Window &window); |
| 141 | |
| 142 | #if defined(__ARM_FEATURE_FP16_VECTOR_ARITHMETIC) && defined(ENABLE_FP16_KERNELS) |
| 143 | template void bounding_box_transform<float16_t>(const ITensor *boxes, ITensor *pred_boxes, const ITensor *deltas, BoundingBoxTransformInfo bbinfo, const Window &window); |
| 144 | #endif //defined(__ARM_FEATURE_FP16_VECTOR_ARITHMETIC) && defined(ENABLE_FP16_KERNELS) |
| 145 | } // namespace cpu |
| 146 | } // namespace arm_compute |