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Diffstat (limited to 'src/core/CL/cl_kernels/common/bounding_box_transform.cl')
| -rw-r--r-- | src/core/CL/cl_kernels/common/bounding_box_transform.cl | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/src/core/CL/cl_kernels/common/bounding_box_transform.cl b/src/core/CL/cl_kernels/common/bounding_box_transform.cl new file mode 100644 index 0000000000..f2e9cb0ed0 --- /dev/null +++ b/src/core/CL/cl_kernels/common/bounding_box_transform.cl @@ -0,0 +1,123 @@ +/* + * Copyright (c) 2018-2021 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 "helpers.h" + +#if defined(DATA_TYPE) && defined(WEIGHT_X) && defined(WEIGHT_Y) && defined(WEIGHT_W) && defined(WEIGHT_H) && defined(IMG_WIDTH) && defined(IMG_HEIGHT) && defined(BOX_FIELDS) && defined(SCALE_BEFORE) // Check for compile time constants + +/** Transform proposal bounding boxes to target bounding box using bounding box deltas. + * + * @attention The following variables must be passed at compile time: + * -# -DDATA_TYPE= Tensor data type. Supported data types: F16/F32 + * -# -DWEIGHT{X,Y,W,H}= Weights [wx, wy, ww, wh] for the deltas + * -# -DIMG_WIDTH= Original image width + * -# -DIMG_HEIGHT= Original image height + * -# -DBOX_FIELDS= Number of fields that are used to represent a box in boxes + * + * @param[in] boxes_ptr Pointer to the boxes tensor. Supported data types: F16/F32 + * @param[in] boxes_stride_x Stride of the boxes tensor in X dimension (in bytes) + * @param[in] boxes_step_x boxes_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] boxes_stride_y Stride of the boxes tensor in Y dimension (in bytes) + * @param[in] boxes_step_y boxes_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] boxes_stride_z Stride of the source tensor in Z dimension (in bytes) + * @param[in] boxes_step_z boxes_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] boxes_offset_first_element_in_bytes The offset of the first element in the boxes tensor + * @param[out] pred_boxes_ptr Pointer to the predicted boxes. Supported data types: same as @p in_ptr + * @param[in] pred_boxes_stride_x Stride of the predicted boxes in X dimension (in bytes) + * @param[in] pred_boxes_step_x pred_boxes_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] pred_boxes_stride_y Stride of the predicted boxes in Y dimension (in bytes) + * @param[in] pred_boxes_step_y pred_boxes_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] pred_boxes_stride_z Stride of the predicted boxes in Z dimension (in bytes) + * @param[in] pred_boxes_step_z pred_boxes_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] pred_boxes_offset_first_element_in_bytes The offset of the first element in the predicted boxes + * @param[in] deltas_ptr Pointer to the deltas tensor. Supported data types: same as @p in_ptr + * @param[in] deltas_stride_x Stride of the deltas tensor in X dimension (in bytes) + * @param[in] deltas_step_x deltas_stride_x * number of elements along X processed per workitem(in bytes) + * @param[in] deltas_stride_y Stride of the deltas tensor in Y dimension (in bytes) + * @param[in] deltas_step_y deltas_stride_y * number of elements along Y processed per workitem(in bytes) + * @param[in] deltas_stride_z Stride of the source tensor in Z dimension (in bytes) + * @param[in] deltas_step_z deltas_stride_z * number of elements along Z processed per workitem(in bytes) + * @param[in] deltas_offset_first_element_in_bytes The offset of the first element in the deltas tensor + */ +__kernel void bounding_box_transform( + VECTOR_DECLARATION(boxes), + IMAGE_DECLARATION(pred_boxes), + IMAGE_DECLARATION(deltas)) +{ + // Get pixels pointer + Vector boxes = CONVERT_TO_VECTOR_STRUCT_NO_STEP(boxes); + Image pred_boxes = CONVERT_TO_IMAGE_STRUCT(pred_boxes); + Image deltas = CONVERT_TO_IMAGE_STRUCT(deltas); + + // Load delta and box values into registers + const DATA_TYPE one = (DATA_TYPE)1.f; + const DATA_TYPE halfone = (DATA_TYPE)0.5f; + + const int py = get_global_id(1); // box + const VEC_DATA_TYPE(DATA_TYPE, 4) + scale_before = (VEC_DATA_TYPE(DATA_TYPE, 4))SCALE_BEFORE; + VEC_DATA_TYPE(DATA_TYPE, 4) + delta = vload4(0, (__global DATA_TYPE *)deltas.ptr); + const VEC_DATA_TYPE(DATA_TYPE, 4) + box = vload4(0, (__global DATA_TYPE *)vector_offset(&boxes, BOX_FIELDS * py)) / scale_before; + + // Calculate width and centers of the old boxes + const VEC_DATA_TYPE(DATA_TYPE, 2) + dims = box.s23 - box.s01 + one; + const VEC_DATA_TYPE(DATA_TYPE, 2) + ctr = box.s01 + halfone * dims; + const VEC_DATA_TYPE(DATA_TYPE, 4) + weights = (VEC_DATA_TYPE(DATA_TYPE, 4))(WEIGHT_X, WEIGHT_Y, WEIGHT_W, WEIGHT_H); + delta /= weights; + delta.s23 = min(delta.s23, (DATA_TYPE)BBOX_XFORM_CLIP); + + // Calculate widths and centers of the new boxes (translation + aspect ratio transformation) + const VEC_DATA_TYPE(DATA_TYPE, 2) + pred_ctr = delta.s01 * dims + ctr; + const VEC_DATA_TYPE(DATA_TYPE, 2) + pred_dims = exp(delta.s23) * dims; + + // Useful vector constant definitions + const VEC_DATA_TYPE(DATA_TYPE, 4) + max_values = (VEC_DATA_TYPE(DATA_TYPE, 4))(IMG_WIDTH - 1, IMG_HEIGHT - 1, IMG_WIDTH - 1, IMG_HEIGHT - 1); + const VEC_DATA_TYPE(DATA_TYPE, 4) + sign = (VEC_DATA_TYPE(DATA_TYPE, 4))(-1, -1, 1, 1); + const VEC_DATA_TYPE(DATA_TYPE, 4) + min_values = 0; + + // Calculate the coordinates of the new boxes + VEC_DATA_TYPE(DATA_TYPE, 4) + pred_box = pred_ctr.s0101 + sign * halfone * pred_dims.s0101; +#ifdef OFFSET // Possibly adjust the predicted boxes + pred_box.s23 -= one; +#endif // Possibly adjust the predicted boxes + pred_box = CLAMP(pred_box, min_values, max_values); +#ifdef SCALE_AFTER // Possibly scale the predicted boxes + pred_box *= (VEC_DATA_TYPE(DATA_TYPE, 4))SCALE_AFTER; +#endif // Possibly scale the predicted boxes + + // Store them into the output + vstore4(pred_box, 0, (__global DATA_TYPE *)pred_boxes.ptr); +} + +#endif // defined(DATA_TYPE) && defined(WEIGHT_X) && defined(WEIGHT_Y) && defined(WEIGHT_W) && defined(WEIGHT_H) && defined(IMG_WIDTH) && defined(IMG_HEIGHT) && defined(BOX_FIELDS) && defined(SCALE_BEFORE) |