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add logic for handling min diversity in mser

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This commit is contained in:
danielenricocahall
2021-05-27 19:16:24 -04:00
parent 125b9f6057
commit fa73b91e39
4 changed files with 34 additions and 1 deletions
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modules/features2d/test/test_mser.cpp
+26
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@@ -119,6 +119,7 @@ TEST(Features2d_MSER, cases)
mserExtractor->setMinArea(kMinArea);
mserExtractor->setMaxArea(kMaxArea);
mserExtractor->setMinDiversity(0);
if( invert )
bitwise_not(src, src);
@@ -170,6 +171,7 @@ TEST(Features2d_MSER, history_update_regression)
{
Ptr<MSER> mser = MSER::create(1, minArea, (int)(tstImages[j].cols * tstImages[j].rows * 0.2));
mser->setPass2Only(true);
mser->setMinDiversity(0);
vector<vector<Point> > mserContours;
vector<Rect> boxRects;
mser->detectRegions(tstImages[j], mserContours, boxRects);
@@ -179,4 +181,28 @@ TEST(Features2d_MSER, history_update_regression)
}
}
TEST(Features2d_MSER, bug_5630)
{
String dataPath = cvtest::TS::ptr()->get_data_path() + "mser/";
Mat img = imread(dataPath + "mser_test.png", IMREAD_GRAYSCALE);
Ptr<MSER> mser = MSER::create(1, 1);
vector<vector<Point> > mserContours;
vector<Rect> boxRects;
// set min diversity and run detection
mser->setMinDiversity(0.1);
mser->detectRegions(img, mserContours, boxRects);
size_t originalNumberOfContours = mserContours.size();
// increase min diversity and run detection again
mser->setMinDiversity(0.2);
mser->detectRegions(img, mserContours, boxRects);
size_t newNumberOfContours = mserContours.size();
// there should be fewer regions detected with a higher min diversity
ASSERT_LT(newNumberOfContours, originalNumberOfContours);
}
}} // namespace