1 /*
2 * Copyright (c) 2017-2020 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 "arm_compute/core/Helpers.h"
25
26 #include "Gaussian3x3.h"
27 #include "Utils.h"
28
29 namespace arm_compute
30 {
31 namespace test
32 {
33 namespace validation
34 {
35 namespace reference
36 {
37 template <typename T>
gaussian3x3(const SimpleTensor<T> & src,BorderMode border_mode,T constant_border_value)38 SimpleTensor<T> gaussian3x3(const SimpleTensor<T> &src, BorderMode border_mode, T constant_border_value)
39 {
40 SimpleTensor<T> dst(src.shape(), src.data_type());
41 const std::array<T, 9> filter{ { 1, 2, 1, 2, 4, 2, 1, 2, 1 } };
42 const float scale = 1.f / 16.f;
43 const uint32_t num_elements = src.num_elements();
44
45 #if defined(_OPENMP)
46 #pragma omp parallel for
47 #endif /* _OPENMP */
48 for(uint32_t element_idx = 0; element_idx < num_elements; ++element_idx)
49 {
50 const Coordinates id = index2coord(src.shape(), element_idx);
51 apply_2d_spatial_filter(id, src, dst, TensorShape(3U, 3U), filter.data(), scale, border_mode, constant_border_value);
52 }
53 return dst;
54 }
55
56 template SimpleTensor<uint8_t> gaussian3x3(const SimpleTensor<uint8_t> &src, BorderMode border_mode, uint8_t constant_border_value);
57 } // namespace reference
58 } // namespace validation
59 } // namespace test
60 } // namespace arm_compute
61