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42
43 #include "test_precomp.hpp"
44 #include "opencv2/highgui.hpp"
45
46 #include <vector>
47 #include <string>
48 using namespace std;
49 using namespace cv;
50
51 #undef RENDER_MSERS
52 #define RENDER_MSERS 0
53
54 #if defined RENDER_MSERS && RENDER_MSERS
renderMSERs(const Mat & gray,Mat & img,const vector<vector<Point>> & msers)55 static void renderMSERs(const Mat& gray, Mat& img, const vector<vector<Point> >& msers)
56 {
57 cvtColor(gray, img, COLOR_GRAY2BGR);
58 RNG rng((uint64)1749583);
59 for( int i = 0; i < (int)msers.size(); i++ )
60 {
61 uchar b = rng.uniform(0, 256);
62 uchar g = rng.uniform(0, 256);
63 uchar r = rng.uniform(0, 256);
64 Vec3b color(b, g, r);
65
66 const Point* pt = &msers[i][0];
67 size_t j, n = msers[i].size();
68 for( j = 0; j < n; j++ )
69 img.at<Vec3b>(pt[j]) = color;
70 }
71 }
72 #endif
73
TEST(Features2d_MSER,cases)74 TEST(Features2d_MSER, cases)
75 {
76 uchar buf[] =
77 {
78 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
79 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
80 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
81 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
82 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
83 255, 255, 255, 255, 255, 0, 0, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 0, 255, 255, 255, 255,
84 255, 255, 255, 255, 255, 0, 0, 0, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 0, 255, 255, 255, 255,
85 255, 255, 255, 255, 255, 0, 0, 0, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 0, 255, 255, 255, 255,
86 255, 255, 255, 255, 255, 0, 0, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 0, 255, 255, 255, 255,
87 255, 255, 255, 255, 255, 255, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 255, 255, 255, 255, 255,
88 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
89 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
90 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
91 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255
92 };
93 Mat big_image = imread(cvtest::TS::ptr()->get_data_path() + "mser/puzzle.png", 0);
94 Mat small_image(14, 26, CV_8U, buf);
95 static const int thresharr[] = { 0, 70, 120, 180, 255 };
96
97 const int kDelta = 5;
98 Ptr<MSER> mserExtractor = MSER::create( kDelta );
99 vector<vector<Point> > msers;
100 vector<Rect> boxes;
101
102 RNG rng((uint64)123456);
103
104 for( int i = 0; i < 100; i++ )
105 {
106 bool use_big_image = rng.uniform(0, 7) != 0;
107 bool invert = rng.uniform(0, 2) != 0;
108 bool binarize = use_big_image ? rng.uniform(0, 5) != 0 : false;
109 bool blur = rng.uniform(0, 2) != 0;
110 int thresh = thresharr[rng.uniform(0, 5)];
111
112 /*if( i == 0 )
113 {
114 use_big_image = true;
115 invert = binarize = blur = false;
116 }*/
117
118 const Mat& src0 = use_big_image ? big_image : small_image;
119 Mat src = src0.clone();
120
121 int kMinArea = use_big_image ? 256 : 10;
122 int kMaxArea = (int)src.total()/4;
123
124 mserExtractor->setMinArea(kMinArea);
125 mserExtractor->setMaxArea(kMaxArea);
126
127 if( invert )
128 bitwise_not(src, src);
129 if( binarize )
130 threshold(src, src, thresh, 255, THRESH_BINARY);
131 if( blur )
132 GaussianBlur(src, src, Size(5, 5), 1.5, 1.5);
133
134 int minRegs = use_big_image ? 7 : 2;
135 int maxRegs = use_big_image ? 1000 : 15;
136 if( binarize && (thresh == 0 || thresh == 255) )
137 minRegs = maxRegs = 0;
138
139 mserExtractor->detectRegions( src, msers, boxes );
140 int nmsers = (int)msers.size();
141 ASSERT_EQ(nmsers, (int)boxes.size());
142
143 if( maxRegs < nmsers || minRegs > nmsers )
144 {
145 printf("%d. minArea=%d, maxArea=%d, nmsers=%d, minRegs=%d, maxRegs=%d, "
146 "image=%s, invert=%d, binarize=%d, thresh=%d, blur=%d\n",
147 i, kMinArea, kMaxArea, nmsers, minRegs, maxRegs, use_big_image ? "big" : "small",
148 (int)invert, (int)binarize, thresh, (int)blur);
149 #if defined RENDER_MSERS && RENDER_MSERS
150 Mat image;
151 imshow("source", src);
152 renderMSERs(src, image, msers);
153 imshow("result", image);
154 waitKey();
155 #endif
156 }
157
158 ASSERT_LE(minRegs, nmsers);
159 ASSERT_GE(maxRegs, nmsers);
160 }
161 }
162
