1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
|
/*******************************************************
* Copyright (c) 2014, ArrayFire
* All rights reserved.
*
* This file is distributed under 3-clause BSD license.
* The complete license agreement can be obtained at:
* http://arrayfire.com/licenses/BSD-3-Clause
********************************************************/
#include <gtest/gtest.h>
#include <arrayfire.h>
#include <af/dim4.hpp>
#include <af/traits.hpp>
#include <string>
#include <vector>
#include <testHelpers.hpp>
using std::string;
using std::vector;
using std::abs;
template<typename T>
class MedianFilter : public ::testing::Test
{
public:
virtual void SetUp() {}
};
// create a list of types to be tested
typedef ::testing::Types<float, double, int, uint, char, uchar, short, ushort> TestTypes;
// register the type list
TYPED_TEST_CASE(MedianFilter, TestTypes);
template<typename T>
void medfiltTest(string pTestFile, dim_t w_len, dim_t w_wid, af_border_type pad)
{
if (noDoubleTests<T>()) return;
vector<af::dim4> numDims;
vector<vector<T> > in;
vector<vector<T> > tests;
readTests<T,T,int>(pTestFile, numDims, in, tests);
af::dim4 dims = numDims[0];
af_array outArray = 0;
af_array inArray = 0;
ASSERT_EQ(AF_SUCCESS, af_create_array(&inArray, &(in[0].front()),
dims.ndims(), dims.get(), (af_dtype)af::dtype_traits<T>::af_type));
ASSERT_EQ(AF_SUCCESS, af_medfilt(&outArray, inArray, w_len, w_wid, pad));
T *outData = new T[dims.elements()];
ASSERT_EQ(AF_SUCCESS, af_get_data_ptr((void*)outData, outArray));
vector<T> currGoldBar = tests[0];
size_t nElems = currGoldBar.size();
for (size_t elIter=0; elIter<nElems; ++elIter) {
ASSERT_EQ(currGoldBar[elIter], outData[elIter])<< "at: " << elIter<< std::endl;
}
// cleanup
delete[] outData;
ASSERT_EQ(AF_SUCCESS, af_release_array(inArray));
ASSERT_EQ(AF_SUCCESS, af_release_array(outArray));
}
TYPED_TEST(MedianFilter, ZERO_PAD_3x3)
{
medfiltTest<TypeParam>(string(TEST_DIR"/medianfilter/zero_pad_3x3_window.test"), 3, 3, AF_PAD_ZERO);
}
TYPED_TEST(MedianFilter, SYMMETRIC_PAD_3x3)
{
medfiltTest<TypeParam>(string(TEST_DIR"/medianfilter/symmetric_pad_3x3_window.test"), 3, 3, AF_PAD_SYM);
}
TYPED_TEST(MedianFilter, BATCH_ZERO_PAD_3x3)
{
medfiltTest<TypeParam>(string(TEST_DIR"/medianfilter/batch_zero_pad_3x3_window.test"), 3, 3, AF_PAD_ZERO);
}
TYPED_TEST(MedianFilter, BATCH_SYMMETRIC_PAD_3x3)
{
medfiltTest<TypeParam>(string(TEST_DIR"/medianfilter/batch_symmetric_pad_3x3_window.test"), 3, 3, AF_PAD_SYM);
}
template<typename T,bool isColor>
void medfiltImageTest(string pTestFile, dim_t w_len, dim_t w_wid)
{
if (noDoubleTests<T>()) return;
if (noImageIOTests()) return;
using af::dim4;
vector<dim4> inDims;
vector<string> inFiles;
vector<dim_t> outSizes;
vector<string> outFiles;
readImageTests(pTestFile, inDims, inFiles, outSizes, outFiles);
size_t testCount = inDims.size();
for (size_t testId=0; testId<testCount; ++testId) {
af_array inArray = 0;
af_array outArray = 0;
af_array goldArray= 0;
dim_t nElems = 0;
inFiles[testId].insert(0,string(TEST_DIR"/medianfilter/"));
outFiles[testId].insert(0,string(TEST_DIR"/medianfilter/"));
ASSERT_EQ(AF_SUCCESS, af_load_image(&inArray, inFiles[testId].c_str(), isColor));
ASSERT_EQ(AF_SUCCESS, af_load_image(&goldArray, outFiles[testId].c_str(), isColor));
ASSERT_EQ(AF_SUCCESS, af_get_elements(&nElems, goldArray));
ASSERT_EQ(AF_SUCCESS, af_medfilt(&outArray, inArray, w_len, w_wid, AF_PAD_ZERO));
T * outData = new T[nElems];
ASSERT_EQ(AF_SUCCESS, af_get_data_ptr((void*)outData, outArray));
T * goldData= new T[nElems];
ASSERT_EQ(AF_SUCCESS, af_get_data_ptr((void*)goldData, goldArray));
ASSERT_EQ(true, compareArraysRMSD(nElems, goldData, outData, 0.018f));
ASSERT_EQ(AF_SUCCESS, af_release_array(inArray));
ASSERT_EQ(AF_SUCCESS, af_release_array(outArray));
ASSERT_EQ(AF_SUCCESS, af_release_array(goldArray));
}
}
template<typename T>
void medfiltInputTest(void)
{
if (noDoubleTests<T>()) return;
af_array inArray = 0;
af_array outArray = 0;
vector<T> in(100, 1);
// Check for 1D inputs
af::dim4 dims = af::dim4(100, 1, 1, 1);
ASSERT_EQ(AF_SUCCESS, af_create_array(&inArray, &in.front(),
dims.ndims(), dims.get(), (af_dtype) af::dtype_traits<T>::af_type));
ASSERT_EQ(AF_ERR_SIZE, af_medfilt(&outArray, inArray, 1, 1, AF_PAD_ZERO));
ASSERT_EQ(AF_SUCCESS, af_release_array(inArray));
}
TYPED_TEST(MedianFilter, InvalidArray)
{
medfiltInputTest<TypeParam>();
}
template<typename T>
void medfiltWindowTest(void)
{
if (noDoubleTests<T>()) return;
af_array inArray = 0;
af_array outArray = 0;
vector<T> in(100, 1);
// Check for 4D inputs
af::dim4 dims(10, 10, 1, 1);
ASSERT_EQ(AF_SUCCESS, af_create_array(&inArray, &in.front(),
dims.ndims(), dims.get(), (af_dtype) af::dtype_traits<T>::af_type));
ASSERT_EQ(AF_ERR_ARG, af_medfilt(&outArray, inArray, 3, 5, AF_PAD_ZERO));
ASSERT_EQ(AF_SUCCESS, af_release_array(inArray));
}
TYPED_TEST(MedianFilter, InvalidWindow)
{
medfiltWindowTest<TypeParam>();
}
template<typename T>
void medfiltPadTest(void)
{
if (noDoubleTests<T>()) return;
af_array inArray = 0;
af_array outArray = 0;
vector<T> in(100, 1);
// Check for 4D inputs
af::dim4 dims(10, 10, 1, 1);
ASSERT_EQ(AF_SUCCESS, af_create_array(&inArray, &in.front(),
dims.ndims(), dims.get(), (af_dtype) af::dtype_traits<T>::af_type));
ASSERT_EQ(AF_ERR_ARG, af_medfilt(&outArray, inArray, 3, 3, af_border_type(3)));
ASSERT_EQ(AF_ERR_ARG, af_medfilt(&outArray, inArray, 3, 3, af_border_type(-1)));
ASSERT_EQ(AF_SUCCESS, af_release_array(inArray));
}
TYPED_TEST(MedianFilter, InvalidPadType)
{
medfiltPadTest<TypeParam>();
}
//////////////////////////////////// CPP ////////////////////////////////////
//
TEST(MedianFilter, CPP)
{
if (noDoubleTests<float>()) return;
const dim_t w_len = 3;
const dim_t w_wid = 3;
vector<af::dim4> numDims;
vector<vector<float> > in;
vector<vector<float> > tests;
readTests<float,float,int>(string(TEST_DIR"/medianfilter/batch_symmetric_pad_3x3_window.test"),
numDims, in, tests);
af::dim4 dims = numDims[0];
af::array input(dims, &(in[0].front()));
af::array output = af::medfilt(input, w_len, w_wid, AF_PAD_SYM);
float *outData = new float[dims.elements()];
output.host((void*)outData);
vector<float> currGoldBar = tests[0];
size_t nElems = currGoldBar.size();
for (size_t elIter=0; elIter<nElems; ++elIter) {
ASSERT_EQ(currGoldBar[elIter], outData[elIter])<< "at: " << elIter<< std::endl;
}
// cleanup
delete[] outData;
}
TEST(MedianFilter, Docs)
{
using af::array;
float input[] = {
1.0000, 2.0000, 3.0000, 4.0000,
5.0000, 6.0000, 7.0000, 8.0000,
9.0000, 10.0000, 11.0000, 12.0000,
13.0000, 14.0000, 15.0000, 16.0000
};
float gold[] = {
0.0000, 2.0000, 3.0000, 0.0000,
2.0000, 6.0000, 7.0000, 4.0000,
6.0000, 10.0000, 11.0000, 8.0000,
0.0000, 10.0000, 11.0000, 0.0000
};
//![ex_image_medfilt]
array a = array(4, 4, input);
//af_print(a);
//a = 1.0000 5.0000 9.0000 13.0000
// 2.0000 6.0000 10.0000 14.0000
// 3.0000 7.0000 11.0000 15.0000
// 4.0000 8.0000 12.0000 16.0000
array b = af::medfilt(a, 3, 3, AF_PAD_ZERO);
//af_print(b);
//b= 0.0000 2.0000 6.0000 0.0000
// 2.0000 6.0000 10.0000 10.0000
// 3.0000 7.0000 11.0000 11.0000
// 0.0000 4.0000 8.0000 0.0000
//![ex_image_medfilt]
float output[16];
b.host((void*)output);
for (int i=0; i<16; ++i) {
ASSERT_EQ(output[i], gold[i]) << "output mismatch at i = " << i << std::endl;
}
}
using namespace af;
TEST(MedianFilter, GFOR)
{
dim4 dims = dim4(10, 10, 3);
array A = iota(dims);
array B = constant(0, dims);
gfor(seq ii, 3) {
B(span, span, ii) = medfilt(A(span, span, ii));
}
for(int ii = 0; ii < 3; ii++) {
array c_ii = medfilt(A(span, span, ii));
array b_ii = B(span, span, ii);
ASSERT_EQ(max<double>(abs(c_ii - b_ii)) < 1E-5, true);
}
}
|
