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synced 2026-07-29 07:13:02 +04:00
Merge remote-tracking branch 'upstream/3.4' into merge-3.4
This commit is contained in:
Alexander Alekhin
@@ -40,9 +40,10 @@ protected:
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bool testBypassRoute(vector<Point2f> hull, int start, int finish);
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inline double getCosVectors(Point2f a, Point2f b, Point2f c);
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Mat barcode, bin_barcode, straight_barcode;
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Mat barcode, bin_barcode, resized_barcode, resized_bin_barcode, straight_barcode;
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vector<Point2f> localization_points, transformation_points;
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double eps_vertical, eps_horizontal, coeff_expansion;
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enum resize_direction { ZOOMING, SHRINKING, UNCHANGED } purpose;
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};
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@@ -50,24 +51,36 @@ void QRDetect::init(const Mat& src, double eps_vertical_, double eps_horizontal_
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{
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CV_TRACE_FUNCTION();
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CV_Assert(!src.empty());
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barcode = src.clone();
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const double min_side = std::min(src.size().width, src.size().height);
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if (min_side < 512.0)
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{
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purpose = ZOOMING;
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coeff_expansion = 512.0 / min_side;
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const int width = cvRound(src.size().width * coeff_expansion);
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const int height = cvRound(src.size().height * coeff_expansion);
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Size new_size(width, height);
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resize(src, barcode, new_size, 0, 0, INTER_LINEAR);
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}
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else if (min_side > 512.0)
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{
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purpose = SHRINKING;
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coeff_expansion = min_side / 512.0;
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const int width = cvRound(src.size().width / coeff_expansion);
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const int height = cvRound(src.size().height / coeff_expansion);
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Size new_size(width, height);
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resize(src, resized_barcode, new_size, 0, 0, INTER_AREA);
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}
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else
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{
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purpose = UNCHANGED;
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coeff_expansion = 1.0;
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barcode = src;
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}
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eps_vertical = eps_vertical_;
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eps_horizontal = eps_horizontal_;
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adaptiveThreshold(barcode, bin_barcode, 255, ADAPTIVE_THRESH_GAUSSIAN_C, THRESH_BINARY, 83, 2);
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adaptiveThreshold(resized_barcode, resized_bin_barcode, 255, ADAPTIVE_THRESH_GAUSSIAN_C, THRESH_BINARY, 83, 2);
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}
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@@ -140,78 +153,96 @@ vector<Point2f> QRDetect::separateVerticalLines(const vector<Vec3d> &list_lines)
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{
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CV_TRACE_FUNCTION();
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vector<Vec3d> result;
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int temp_length = 0;
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int temp_length;
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vector<Point2f> point2f_result;
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uint8_t next_pixel;
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vector<double> test_lines;
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for (size_t pnt = 0; pnt < list_lines.size(); pnt++)
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for (int coeff_epsilon = 1; coeff_epsilon < 10; coeff_epsilon++)
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{
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const int x = cvRound(list_lines[pnt][0] + list_lines[pnt][2] * 0.5);
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const int y = cvRound(list_lines[pnt][1]);
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result.clear();
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temp_length = 0;
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point2f_result.clear();
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// --------------- Search vertical up-lines --------------- //
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test_lines.clear();
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uint8_t future_pixel_up = 255;
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for (int j = y; j < bin_barcode.rows - 1; j++)
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for (size_t pnt = 0; pnt < list_lines.size(); pnt++)
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{
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next_pixel = bin_barcode.ptr<uint8_t>(j + 1)[x];
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temp_length++;
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if (next_pixel == future_pixel_up)
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const int x = cvRound(list_lines[pnt][0] + list_lines[pnt][2] * 0.5);
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const int y = cvRound(list_lines[pnt][1]);
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// --------------- Search vertical up-lines --------------- //
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test_lines.clear();
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uint8_t future_pixel_up = 255;
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for (int j = y; j < bin_barcode.rows - 1; j++)
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{
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future_pixel_up = 255 - future_pixel_up;
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test_lines.push_back(temp_length);
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temp_length = 0;
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if (test_lines.size() == 3) { break; }
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next_pixel = bin_barcode.ptr<uint8_t>(j + 1)[x];
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temp_length++;
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if (next_pixel == future_pixel_up)
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{
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future_pixel_up = 255 - future_pixel_up;
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test_lines.push_back(temp_length);
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temp_length = 0;
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if (test_lines.size() == 3) { break; }
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}
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}
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// --------------- Search vertical down-lines --------------- //
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uint8_t future_pixel_down = 255;
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for (int j = y; j >= 1; j--)
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{
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next_pixel = bin_barcode.ptr<uint8_t>(j - 1)[x];
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temp_length++;
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if (next_pixel == future_pixel_down)
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{
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future_pixel_down = 255 - future_pixel_down;
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test_lines.push_back(temp_length);
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temp_length = 0;
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if (test_lines.size() == 6) { break; }
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}
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}
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// --------------- Compute vertical lines --------------- //
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if (test_lines.size() == 6)
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{
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double length = 0.0, weight = 0.0;
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for (size_t i = 0; i < test_lines.size(); i++) { length += test_lines[i]; }
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CV_Assert(length > 0);
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for (size_t i = 0; i < test_lines.size(); i++)
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{
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if (i % 3 != 0) { weight += fabs((test_lines[i] / length) - 1.0/ 7.0); }
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else { weight += fabs((test_lines[i] / length) - 3.0/14.0); }
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}
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if(weight < eps_horizontal * coeff_epsilon)
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{
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result.push_back(list_lines[pnt]);
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}
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}
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}
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// --------------- Search vertical down-lines --------------- //
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uint8_t future_pixel_down = 255;
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for (int j = y; j >= 1; j--)
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if (result.size() > 2)
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{
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next_pixel = bin_barcode.ptr<uint8_t>(j - 1)[x];
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temp_length++;
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if (next_pixel == future_pixel_down)
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for (size_t i = 0; i < result.size(); i++)
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{
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future_pixel_down = 255 - future_pixel_down;
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test_lines.push_back(temp_length);
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temp_length = 0;
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if (test_lines.size() == 6) { break; }
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point2f_result.push_back(
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Point2f(static_cast<float>(result[i][0] + result[i][2] * 0.5),
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static_cast<float>(result[i][1])));
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}
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vector<Point2f> centers;
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Mat labels;
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double compactness;
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compactness = kmeans(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) { continue; }
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if (compactness > 0) { break; }
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}
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// --------------- Compute vertical lines --------------- //
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if (test_lines.size() == 6)
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{
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double length = 0.0, weight = 0.0;
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for (size_t i = 0; i < test_lines.size(); i++) { length += test_lines[i]; }
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CV_Assert(length > 0);
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for (size_t i = 0; i < test_lines.size(); i++)
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{
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if (i % 3 != 0) { weight += fabs((test_lines[i] / length) - 1.0/ 7.0); }
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else { weight += fabs((test_lines[i] / length) - 3.0/14.0); }
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}
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if(weight < eps_horizontal)
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{
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result.push_back(list_lines[pnt]);
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}
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}
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}
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vector<Point2f> point2f_result;
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for (size_t i = 0; i < result.size(); i++)
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{
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point2f_result.push_back(
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Point2f(static_cast<float>(result[i][0] + result[i][2] * 0.5),
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static_cast<float>(result[i][1])));
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}
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return point2f_result;
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}
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@@ -316,7 +347,7 @@ bool QRDetect::localization()
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vector<Vec3d> list_lines_x = searchHorizontalLines();
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if( list_lines_x.empty() ) { return false; }
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vector<Point2f> list_lines_y = separateVerticalLines(list_lines_x);
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if( list_lines_y.size() < 3 ) { return false; }
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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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@@ -325,9 +356,56 @@ bool QRDetect::localization()
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3, KMEANS_PP_CENTERS, localization_points);
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fixationPoints(localization_points);
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if (localization_points.size() != 3) { return false; }
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if (coeff_expansion > 1.0)
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bool suare_flag = false, local_points_flag = false;
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double triangle_sides[3];
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triangle_sides[0] = norm(localization_points[0] - localization_points[1]);
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triangle_sides[1] = norm(localization_points[1] - localization_points[2]);
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triangle_sides[2] = norm(localization_points[2] - localization_points[0]);
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double triangle_perim = (triangle_sides[0] + triangle_sides[1] + triangle_sides[2]) / 2;
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double square_area = sqrt((triangle_perim * (triangle_perim - triangle_sides[0])
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* (triangle_perim - triangle_sides[1])
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* (triangle_perim - triangle_sides[2]))) * 2;
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double img_square_area = bin_barcode.cols * bin_barcode.rows;
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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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}
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if (localization_points.size() != 3)
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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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{
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localization_points.clear();
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bin_barcode = resized_bin_barcode.clone();
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list_lines_x = searchHorizontalLines();
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if( list_lines_x.empty() ) { return false; }
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list_lines_y = separateVerticalLines(list_lines_x);
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if( list_lines_y.empty() ) { return false; }
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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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3, KMEANS_PP_CENTERS, localization_points);
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fixationPoints(localization_points);
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if (localization_points.size() != 3) { return false; }
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const int width = cvRound(bin_barcode.size().width * coeff_expansion);
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const int height = cvRound(bin_barcode.size().height * coeff_expansion);
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Size new_size(width, height);
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Mat intermediate;
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resize(bin_barcode, intermediate, new_size, 0, 0, INTER_LINEAR);
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bin_barcode = intermediate.clone();
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for (size_t i = 0; i < localization_points.size(); i++)
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{
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localization_points[i] *= coeff_expansion;
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}
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}
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if (purpose == ZOOMING)
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{
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const int width = cvRound(bin_barcode.size().width / coeff_expansion);
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const int height = cvRound(bin_barcode.size().height / coeff_expansion);
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@@ -475,6 +553,13 @@ bool QRDetect::computeTransformationPoints()
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vector<Point2f> quadrilateral = getQuadrilateral(transformation_points);
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transformation_points = quadrilateral;
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int width = bin_barcode.size().width;
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int height = bin_barcode.size().height;
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for (size_t i = 0; i < transformation_points.size(); i++)
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{
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if ((cvRound(transformation_points[i].x) > width) ||
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(cvRound(transformation_points[i].y) > height)) { return false; }
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}
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return true;
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}
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@@ -826,9 +911,27 @@ protected:
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void QRDecode::init(const Mat &src, const vector<Point2f> &points)
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{
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CV_TRACE_FUNCTION();
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original = src.clone();
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intermediate = Mat::zeros(src.size(), CV_8UC1);
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original_points = points;
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vector<Point2f> bbox = points;
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double coeff_expansion;
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const int min_side = std::min(src.size().width, src.size().height);
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if (min_side > 512)
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{
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coeff_expansion = min_side / 512;
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const int width = cvRound(src.size().width / coeff_expansion);
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const int height = cvRound(src.size().height / coeff_expansion);
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Size new_size(width, height);
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resize(src, original, new_size, 0, 0, INTER_AREA);
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for (size_t i = 0; i < bbox.size(); i++)
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{
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bbox[i] /= static_cast<float>(coeff_expansion);
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}
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}
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else
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{
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original = src.clone();
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}
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intermediate = Mat::zeros(original.size(), CV_8UC1);
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original_points = bbox;
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version = 0;
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version_size = 0;
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test_perspective_size = 251;
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