1 /*
2 * Copyright (c) 2017-2019 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 "Remap.h"
25
26 #include "Utils.h"
27 #include "tests/validation/Helpers.h"
28
29 #include <algorithm>
30 #include <array>
31
32 namespace arm_compute
33 {
34 namespace test
35 {
36 namespace validation
37 {
38 namespace reference
39 {
40 template <typename T>
remap(const SimpleTensor<T> & in,SimpleTensor<float> & map_x,SimpleTensor<float> & map_y,SimpleTensor<T> & valid_mask,InterpolationPolicy policy,BorderMode border_mode,T constant_border_value)41 SimpleTensor<T> remap(const SimpleTensor<T> &in, SimpleTensor<float> &map_x, SimpleTensor<float> &map_y, SimpleTensor<T> &valid_mask, InterpolationPolicy policy, BorderMode border_mode,
42 T constant_border_value)
43 {
44 ARM_COMPUTE_ERROR_ON_MSG(border_mode == BorderMode::REPLICATE, "BorderMode not supported");
45 SimpleTensor<T> out(in.shape(), in.data_type());
46 ARM_COMPUTE_ERROR_ON(out.num_elements() != map_x.num_elements());
47 const int width = in.shape().x();
48 const int height = in.shape().y();
49 const uint32_t num_elements = out.num_elements();
50 for(uint32_t idx = 0; idx < num_elements; idx++)
51 {
52 const Coordinates id_out = index2coord(out.shape(), idx);
53 valid_mask[idx] = 1;
54 Coordinates src_idx = id_out; // need to setup all coordinates and not just xy
55 src_idx.set(0, static_cast<int>(std::floor(map_x[idx])));
56 src_idx.set(1, static_cast<int>(std::floor(map_y[idx])));
57 if((0 <= map_y[idx]) && (map_y[idx] < height) && (0 <= map_x[idx]) && (map_x[idx] < width))
58 {
59 switch(policy)
60 {
61 case InterpolationPolicy::NEAREST_NEIGHBOR:
62 {
63 out[idx] = tensor_elem_at(in, src_idx, border_mode, constant_border_value);
64 break;
65 }
66 case InterpolationPolicy::BILINEAR:
67 {
68 (valid_bilinear_policy(map_x[idx], map_y[idx], width, height, border_mode)) ?
69 out[idx] = bilinear_policy(in, src_idx, map_x[idx], map_y[idx], border_mode, constant_border_value) :
70 valid_mask[idx] = 0;
71 break;
72 }
73 case InterpolationPolicy::AREA:
74 default:
75 ARM_COMPUTE_ERROR("Interpolation not supported");
76 break;
77 }
78 }
79 else
80 {
81 if(border_mode == BorderMode::UNDEFINED)
82 {
83 valid_mask[idx] = 0;
84 }
85 else
86 {
87 switch(policy)
88 {
89 case InterpolationPolicy::NEAREST_NEIGHBOR:
90 out[idx] = constant_border_value;
91 break;
92 case InterpolationPolicy::BILINEAR:
93 out[idx] = bilinear_policy(in, src_idx, map_x[idx], map_y[idx], border_mode, constant_border_value);
94 break;
95 case InterpolationPolicy::AREA:
96 default:
97 break;
98 }
99 }
100 }
101 }
102
103 return out;
104 }
105
106 template SimpleTensor<uint8_t> remap(const SimpleTensor<uint8_t> &src, SimpleTensor<float> &map_x, SimpleTensor<float> &map_y, SimpleTensor<uint8_t> &valid_mask, InterpolationPolicy policy,
107 BorderMode border_mode,
108 uint8_t constant_border_value);
109 } // namespace reference
110 } // namespace validation
111 } // namespace test
112 } // namespace arm_compute
113