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fix false positive detection
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0f7b2eb79f
commit
125cc79c17
@ -235,9 +235,11 @@ vector<Vec3d> QRDetect::searchHorizontalLines()
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vector<Point2f> QRDetect::separateVerticalLines(const vector<Vec3d> &list_lines)
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{
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CV_TRACE_FUNCTION();
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for (int coeff_epsilon = 1; coeff_epsilon < 10; coeff_epsilon++)
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const double min_dist_between_points = 10.0;
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const double max_ratio = 1.0;
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for (int coeff_epsilon_i = 1; coeff_epsilon_i < 101; ++coeff_epsilon_i)
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{
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const float coeff_epsilon = coeff_epsilon_i * 0.1f;
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vector<Point2f> point2f_result = extractVerticalLines(list_lines, eps_horizontal * coeff_epsilon);
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if (!point2f_result.empty())
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{
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@ -247,9 +249,23 @@ vector<Point2f> QRDetect::separateVerticalLines(const vector<Vec3d> &list_lines)
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point2f_result, 3, labels,
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TermCriteria(TermCriteria::EPS + TermCriteria::COUNT, 10, 0.1),
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3, KMEANS_PP_CENTERS, centers);
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if (compactness == 0)
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double min_dist = std::numeric_limits<double>::max();
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for (size_t i = 0; i < centers.size(); i++)
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{
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double dist = norm(centers[i] - centers[(i+1) % centers.size()]);
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if (dist < min_dist)
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{
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min_dist = dist;
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}
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}
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if (min_dist < min_dist_between_points)
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{
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continue;
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if (compactness > 0)
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}
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double mean_compactness = compactness / point2f_result.size();
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double ratio = mean_compactness / min_dist;
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if (ratio < max_ratio)
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{
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return point2f_result;
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}
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@ -456,7 +472,6 @@ bool QRDetect::localization()
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vector<Point2f> list_lines_y = separateVerticalLines(list_lines_x);
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if( list_lines_y.empty() ) { return false; }
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vector<Point2f> centers;
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Mat labels;
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kmeans(list_lines_y, 3, labels,
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TermCriteria( TermCriteria::EPS + TermCriteria::COUNT, 10, 0.1),
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@ -464,7 +479,7 @@ bool QRDetect::localization()
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fixationPoints(localization_points);
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bool suare_flag = false, local_points_flag = false;
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bool square_flag = false, local_points_flag = false;
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double triangle_sides[3];
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double triangle_perim, square_area, img_square_area;
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if (localization_points.size() == 3)
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@ -482,14 +497,14 @@ bool QRDetect::localization()
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if (square_area > (img_square_area * 0.2))
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{
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suare_flag = true;
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square_flag = true;
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}
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}
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else
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{
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local_points_flag = true;
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}
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if ((suare_flag || local_points_flag) && purpose == SHRINKING)
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if ((square_flag || local_points_flag) && purpose == SHRINKING)
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{
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localization_points.clear();
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bin_barcode = resized_bin_barcode.clone();
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@ -1970,6 +1985,13 @@ bool QRDecode::createSpline(vector<vector<Point2f> > &spline_lines)
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}
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}
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}
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for (int i = 0; i < NUM_SIDES; i++)
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{
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if (spline_lines[i].size() == 0)
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{
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return false;
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}
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}
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return true;
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}
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