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805 lines
31 KiB
C++
805 lines
31 KiB
C++
/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
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// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistribution's of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// * The name of the copyright holders may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall the Intel Corporation or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#include "test_precomp.hpp"
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namespace opencv_test {
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namespace {
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class CV_ConnectedComponentsTest : public cvtest::BaseTest
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{
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public:
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CV_ConnectedComponentsTest();
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~CV_ConnectedComponentsTest();
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protected:
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void run(int);
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};
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CV_ConnectedComponentsTest::CV_ConnectedComponentsTest() {}
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CV_ConnectedComponentsTest::~CV_ConnectedComponentsTest() {}
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// This function force a row major order for the labels
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void normalizeLabels(Mat1i& imgLabels, int iNumLabels) {
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vector<int> vecNewLabels(iNumLabels + 1, 0);
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int iMaxNewLabel = 0;
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for (int r = 0; r < imgLabels.rows; ++r) {
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for (int c = 0; c < imgLabels.cols; ++c) {
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int iCurLabel = imgLabels(r, c);
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if (iCurLabel > 0) {
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if (vecNewLabels[iCurLabel] == 0) {
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vecNewLabels[iCurLabel] = ++iMaxNewLabel;
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}
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imgLabels(r, c) = vecNewLabels[iCurLabel];
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}
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}
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}
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}
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void CV_ConnectedComponentsTest::run(int /* start_from */)
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{
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int ccltype[] = { cv::CCL_DEFAULT, cv::CCL_WU, cv::CCL_GRANA, cv::CCL_BOLELLI, cv::CCL_SAUF, cv::CCL_BBDT, cv::CCL_SPAGHETTI };
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string exp_path = string(ts->get_data_path()) + "connectedcomponents/ccomp_exp.png";
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Mat exp = imread(exp_path, 0);
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Mat orig = imread(string(ts->get_data_path()) + "connectedcomponents/concentric_circles.png", 0);
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if (orig.empty())
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{
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ts->set_failed_test_info(cvtest::TS::FAIL_INVALID_TEST_DATA);
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return;
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}
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Mat bw = orig > 128;
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for (uint cclt = 0; cclt < sizeof(ccltype) / sizeof(int); ++cclt)
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{
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Mat1i labelImage;
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int nLabels = connectedComponents(bw, labelImage, 8, CV_32S, ccltype[cclt]);
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normalizeLabels(labelImage, nLabels);
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// Validate test results
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for (int r = 0; r < labelImage.rows; ++r) {
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for (int c = 0; c < labelImage.cols; ++c) {
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int l = labelImage.at<int>(r, c);
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bool pass = l >= 0 && l <= nLabels;
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if (!pass) {
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ts->set_failed_test_info(cvtest::TS::FAIL_INVALID_OUTPUT);
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return;
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}
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}
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}
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if (exp.empty() || orig.size() != exp.size())
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{
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imwrite(exp_path, labelImage);
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exp = labelImage;
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}
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if (0 != cvtest::norm(labelImage > 0, exp > 0, NORM_INF))
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{
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ts->set_failed_test_info(cvtest::TS::FAIL_MISMATCH);
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return;
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}
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if (nLabels != cvtest::norm(labelImage, NORM_INF) + 1)
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{
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ts->set_failed_test_info(cvtest::TS::FAIL_MISMATCH);
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return;
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}
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}
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ts->set_failed_test_info(cvtest::TS::OK);
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}
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TEST(Imgproc_ConnectedComponents, regression) { CV_ConnectedComponentsTest test; test.safe_run(); }
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TEST(Imgproc_ConnectedComponents, grana_buffer_overflow)
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{
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cv::Mat darkMask;
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darkMask.create(31, 87, CV_8U);
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darkMask = 0;
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cv::Mat labels;
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cv::Mat stats;
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cv::Mat centroids;
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int nbComponents = cv::connectedComponentsWithStats(darkMask, labels, stats, centroids, 8, CV_32S, cv::CCL_GRANA);
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EXPECT_EQ(1, nbComponents);
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}
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static cv::Mat createCrashMat(int numThreads) {
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const int h = numThreads * 4 * 2 + 8;
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const double nParallelStripes = std::max(1, std::min(h / 2, numThreads * 4));
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const int w = 4;
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const int nstripes = cvRound(nParallelStripes <= 0 ? h : MIN(MAX(nParallelStripes, 1.), h));
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const cv::Range stripeRange(0, nstripes);
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const cv::Range wholeRange(0, h);
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cv::Mat m(h, w, CV_8U);
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m = 0;
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// Look for a range that starts with odd value and ends with even value
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cv::Range bugRange;
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for (int s = stripeRange.start; s < stripeRange.end; s++) {
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cv::Range sr(s, s + 1);
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cv::Range r;
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r.start = (int)(wholeRange.start +
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((uint64)sr.start * (wholeRange.end - wholeRange.start) + nstripes / 2) / nstripes);
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r.end = sr.end >= nstripes ?
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wholeRange.end :
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(int)(wholeRange.start +
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((uint64)sr.end * (wholeRange.end - wholeRange.start) + nstripes / 2) / nstripes);
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if (r.start > 0 && r.start % 2 == 1 && r.end % 2 == 0 && r.end >= r.start + 2) {
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bugRange = r;
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break;
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}
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}
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if (bugRange.empty()) { // Could not create a buggy range
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return m;
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}
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// Fill in bug Range
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for (int x = 1; x < w; x++) {
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m.at<char>(bugRange.start - 1, x) = 1;
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}
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m.at<char>(bugRange.start + 0, 0) = 1;
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m.at<char>(bugRange.start + 0, 1) = 1;
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m.at<char>(bugRange.start + 0, 3) = 1;
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m.at<char>(bugRange.start + 1, 1) = 1;
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m.at<char>(bugRange.start + 2, 1) = 1;
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m.at<char>(bugRange.start + 2, 3) = 1;
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m.at<char>(bugRange.start + 3, 0) = 1;
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m.at<char>(bugRange.start + 3, 1) = 1;
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return m;
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}
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TEST(Imgproc_ConnectedComponents, parallel_wu_labels)
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{
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cv::Mat mat = createCrashMat(cv::getNumThreads());
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if (mat.empty()) {
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return;
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}
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const int nbPixels = cv::countNonZero(mat);
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cv::Mat labels;
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cv::Mat stats;
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cv::Mat centroids;
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int nb = 0;
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EXPECT_NO_THROW(nb = cv::connectedComponentsWithStats(mat, labels, stats, centroids, 8, CV_32S, cv::CCL_WU));
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int area = 0;
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for (int i = 1; i < nb; ++i) {
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area += stats.at<int32_t>(i, cv::CC_STAT_AREA);
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}
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EXPECT_EQ(nbPixels, area);
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}
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TEST(Imgproc_ConnectedComponents, missing_background_pixels)
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{
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cv::Mat m = Mat::ones(10, 10, CV_8U);
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cv::Mat labels;
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cv::Mat stats;
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cv::Mat centroids;
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EXPECT_NO_THROW(cv::connectedComponentsWithStats(m, labels, stats, centroids, 8, CV_32S, cv::CCL_WU));
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EXPECT_EQ(stats.at<int32_t>(0, cv::CC_STAT_WIDTH), 0);
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EXPECT_EQ(stats.at<int32_t>(0, cv::CC_STAT_HEIGHT), 0);
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EXPECT_EQ(stats.at<int32_t>(0, cv::CC_STAT_LEFT), -1);
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EXPECT_TRUE(std::isnan(centroids.at<double>(0, 0)));
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EXPECT_TRUE(std::isnan(centroids.at<double>(0, 1)));
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}
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TEST(Imgproc_ConnectedComponents, spaghetti_bbdt_sauf_stats)
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{
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cv::Mat1b img(16, 16);
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img << 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
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0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0,
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0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0,
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0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0,
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0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0,
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0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0,
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0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1,
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0, 1, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 1,
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0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 1,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1;
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cv::Mat1i labels;
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cv::Mat1i stats;
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cv::Mat1d centroids;
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int ccltype[] = { cv::CCL_WU, cv::CCL_GRANA, cv::CCL_BOLELLI, cv::CCL_SAUF, cv::CCL_BBDT, cv::CCL_SPAGHETTI };
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for (uint cclt = 0; cclt < sizeof(ccltype) / sizeof(int); ++cclt) {
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EXPECT_NO_THROW(cv::connectedComponentsWithStats(img, labels, stats, centroids, 8, CV_32S, ccltype[cclt]));
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EXPECT_EQ(stats(0, cv::CC_STAT_LEFT), 0);
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EXPECT_EQ(stats(0, cv::CC_STAT_TOP), 0);
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EXPECT_EQ(stats(0, cv::CC_STAT_WIDTH), 16);
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EXPECT_EQ(stats(0, cv::CC_STAT_HEIGHT), 15);
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EXPECT_EQ(stats(0, cv::CC_STAT_AREA), 144);
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EXPECT_EQ(stats(1, cv::CC_STAT_LEFT), 1);
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EXPECT_EQ(stats(1, cv::CC_STAT_TOP), 1);
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EXPECT_EQ(stats(1, cv::CC_STAT_WIDTH), 3);
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EXPECT_EQ(stats(1, cv::CC_STAT_HEIGHT), 3);
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EXPECT_EQ(stats(1, cv::CC_STAT_AREA), 9);
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EXPECT_EQ(stats(2, cv::CC_STAT_LEFT), 1);
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EXPECT_EQ(stats(2, cv::CC_STAT_TOP), 1);
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EXPECT_EQ(stats(2, cv::CC_STAT_WIDTH), 8);
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EXPECT_EQ(stats(2, cv::CC_STAT_HEIGHT), 7);
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EXPECT_EQ(stats(2, cv::CC_STAT_AREA), 40);
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EXPECT_EQ(stats(3, cv::CC_STAT_LEFT), 10);
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EXPECT_EQ(stats(3, cv::CC_STAT_TOP), 2);
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EXPECT_EQ(stats(3, cv::CC_STAT_WIDTH), 5);
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EXPECT_EQ(stats(3, cv::CC_STAT_HEIGHT), 2);
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EXPECT_EQ(stats(3, cv::CC_STAT_AREA), 8);
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EXPECT_EQ(stats(4, cv::CC_STAT_LEFT), 11);
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EXPECT_EQ(stats(4, cv::CC_STAT_TOP), 5);
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EXPECT_EQ(stats(4, cv::CC_STAT_WIDTH), 3);
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EXPECT_EQ(stats(4, cv::CC_STAT_HEIGHT), 3);
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EXPECT_EQ(stats(4, cv::CC_STAT_AREA), 9);
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EXPECT_EQ(stats(5, cv::CC_STAT_LEFT), 2);
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EXPECT_EQ(stats(5, cv::CC_STAT_TOP), 9);
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EXPECT_EQ(stats(5, cv::CC_STAT_WIDTH), 1);
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EXPECT_EQ(stats(5, cv::CC_STAT_HEIGHT), 1);
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EXPECT_EQ(stats(5, cv::CC_STAT_AREA), 1);
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EXPECT_EQ(stats(6, cv::CC_STAT_LEFT), 12);
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EXPECT_EQ(stats(6, cv::CC_STAT_TOP), 9);
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EXPECT_EQ(stats(6, cv::CC_STAT_WIDTH), 1);
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EXPECT_EQ(stats(6, cv::CC_STAT_HEIGHT), 1);
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EXPECT_EQ(stats(6, cv::CC_STAT_AREA), 1);
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// Labels' order could be different!
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if (cclt == cv::CCL_WU || cclt == cv::CCL_SAUF) {
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// CCL_SAUF, CCL_WU
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EXPECT_EQ(stats(9, cv::CC_STAT_LEFT), 1);
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EXPECT_EQ(stats(9, cv::CC_STAT_TOP), 11);
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EXPECT_EQ(stats(9, cv::CC_STAT_WIDTH), 4);
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EXPECT_EQ(stats(9, cv::CC_STAT_HEIGHT), 2);
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EXPECT_EQ(stats(9, cv::CC_STAT_AREA), 8);
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EXPECT_EQ(stats(7, cv::CC_STAT_LEFT), 6);
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EXPECT_EQ(stats(7, cv::CC_STAT_TOP), 10);
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EXPECT_EQ(stats(7, cv::CC_STAT_WIDTH), 4);
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EXPECT_EQ(stats(7, cv::CC_STAT_HEIGHT), 2);
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EXPECT_EQ(stats(7, cv::CC_STAT_AREA), 8);
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EXPECT_EQ(stats(8, cv::CC_STAT_LEFT), 0);
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EXPECT_EQ(stats(8, cv::CC_STAT_TOP), 10);
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EXPECT_EQ(stats(8, cv::CC_STAT_WIDTH), 16);
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EXPECT_EQ(stats(8, cv::CC_STAT_HEIGHT), 6);
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EXPECT_EQ(stats(8, cv::CC_STAT_AREA), 21);
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}
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else {
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// CCL_BBDT, CCL_GRANA, CCL_SPAGHETTI, CCL_BOLELLI
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EXPECT_EQ(stats(7, cv::CC_STAT_LEFT), 1);
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EXPECT_EQ(stats(7, cv::CC_STAT_TOP), 11);
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EXPECT_EQ(stats(7, cv::CC_STAT_WIDTH), 4);
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EXPECT_EQ(stats(7, cv::CC_STAT_HEIGHT), 2);
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EXPECT_EQ(stats(7, cv::CC_STAT_AREA), 8);
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EXPECT_EQ(stats(8, cv::CC_STAT_LEFT), 6);
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EXPECT_EQ(stats(8, cv::CC_STAT_TOP), 10);
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EXPECT_EQ(stats(8, cv::CC_STAT_WIDTH), 4);
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EXPECT_EQ(stats(8, cv::CC_STAT_HEIGHT), 2);
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EXPECT_EQ(stats(8, cv::CC_STAT_AREA), 8);
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EXPECT_EQ(stats(9, cv::CC_STAT_LEFT), 0);
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EXPECT_EQ(stats(9, cv::CC_STAT_TOP), 10);
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EXPECT_EQ(stats(9, cv::CC_STAT_WIDTH), 16);
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EXPECT_EQ(stats(9, cv::CC_STAT_HEIGHT), 6);
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EXPECT_EQ(stats(9, cv::CC_STAT_AREA), 21);
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}
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EXPECT_EQ(stats(10, cv::CC_STAT_LEFT), 9);
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EXPECT_EQ(stats(10, cv::CC_STAT_TOP), 12);
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EXPECT_EQ(stats(10, cv::CC_STAT_WIDTH), 5);
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EXPECT_EQ(stats(10, cv::CC_STAT_HEIGHT), 2);
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EXPECT_EQ(stats(10, cv::CC_STAT_AREA), 7);
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}
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}
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TEST(Imgproc_ConnectedComponents, chessboard_even)
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{
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cv::Size size(16, 16);
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cv::Mat1b input(size);
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cv::Mat1i output_8c(size);
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cv::Mat1i output_4c(size);
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// Chessboard image with even number of rows and cols
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// Note that this is the maximum number of labels for 4-way connectivity
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{
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input <<
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1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
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0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
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1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
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0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
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1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
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0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
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1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
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0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
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1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
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0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
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1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
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0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
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1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
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0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
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1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
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0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1;
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output_8c <<
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1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
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0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
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1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
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|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1;
|
|
|
|
output_4c <<
|
|
1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8, 0,
|
|
0, 9, 0, 10, 0, 11, 0, 12, 0, 13, 0, 14, 0, 15, 0, 16,
|
|
17, 0, 18, 0, 19, 0, 20, 0, 21, 0, 22, 0, 23, 0, 24, 0,
|
|
0, 25, 0, 26, 0, 27, 0, 28, 0, 29, 0, 30, 0, 31, 0, 32,
|
|
33, 0, 34, 0, 35, 0, 36, 0, 37, 0, 38, 0, 39, 0, 40, 0,
|
|
0, 41, 0, 42, 0, 43, 0, 44, 0, 45, 0, 46, 0, 47, 0, 48,
|
|
49, 0, 50, 0, 51, 0, 52, 0, 53, 0, 54, 0, 55, 0, 56, 0,
|
|
0, 57, 0, 58, 0, 59, 0, 60, 0, 61, 0, 62, 0, 63, 0, 64,
|
|
65, 0, 66, 0, 67, 0, 68, 0, 69, 0, 70, 0, 71, 0, 72, 0,
|
|
0, 73, 0, 74, 0, 75, 0, 76, 0, 77, 0, 78, 0, 79, 0, 80,
|
|
81, 0, 82, 0, 83, 0, 84, 0, 85, 0, 86, 0, 87, 0, 88, 0,
|
|
0, 89, 0, 90, 0, 91, 0, 92, 0, 93, 0, 94, 0, 95, 0, 96,
|
|
97, 0, 98, 0, 99, 0, 100, 0, 101, 0, 102, 0, 103, 0, 104, 0,
|
|
0, 105, 0, 106, 0, 107, 0, 108, 0, 109, 0, 110, 0, 111, 0, 112,
|
|
113, 0, 114, 0, 115, 0, 116, 0, 117, 0, 118, 0, 119, 0, 120, 0,
|
|
0, 121, 0, 122, 0, 123, 0, 124, 0, 125, 0, 126, 0, 127, 0, 128;
|
|
}
|
|
|
|
int ccltype[] = { cv::CCL_DEFAULT, cv::CCL_WU, cv::CCL_GRANA, cv::CCL_BOLELLI, cv::CCL_SAUF, cv::CCL_BBDT, cv::CCL_SPAGHETTI };
|
|
|
|
cv::Mat1i labels;
|
|
cv::Mat diff;
|
|
int nLabels = 0;
|
|
for (size_t cclt = 0; cclt < sizeof(ccltype) / sizeof(int); ++cclt) {
|
|
|
|
EXPECT_NO_THROW(nLabels = cv::connectedComponents(input, labels, 8, CV_32S, ccltype[cclt]));
|
|
normalizeLabels(labels, nLabels);
|
|
|
|
diff = labels != output_8c;
|
|
EXPECT_EQ(cv::countNonZero(diff), 0);
|
|
|
|
|
|
EXPECT_NO_THROW(nLabels = cv::connectedComponents(input, labels, 4, CV_32S, ccltype[cclt]));
|
|
normalizeLabels(labels, nLabels);
|
|
|
|
diff = labels != output_4c;
|
|
EXPECT_EQ(cv::countNonZero(diff), 0);
|
|
}
|
|
|
|
}
|
|
|
|
TEST(Imgproc_ConnectedComponents, chessboard_odd)
|
|
{
|
|
cv::Size size(15, 15);
|
|
cv::Mat1b input(size);
|
|
cv::Mat1i output_8c(size);
|
|
cv::Mat1i output_4c(size);
|
|
|
|
// Chessboard image with odd number of rows and cols
|
|
// Note that this is the maximum number of labels for 4-way connectivity
|
|
{
|
|
input <<
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1;
|
|
|
|
output_8c <<
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1;
|
|
|
|
output_4c <<
|
|
1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8,
|
|
0, 9, 0, 10, 0, 11, 0, 12, 0, 13, 0, 14, 0, 15, 0,
|
|
16, 0, 17, 0, 18, 0, 19, 0, 20, 0, 21, 0, 22, 0, 23,
|
|
0, 24, 0, 25, 0, 26, 0, 27, 0, 28, 0, 29, 0, 30, 0,
|
|
31, 0, 32, 0, 33, 0, 34, 0, 35, 0, 36, 0, 37, 0, 38,
|
|
0, 39, 0, 40, 0, 41, 0, 42, 0, 43, 0, 44, 0, 45, 0,
|
|
46, 0, 47, 0, 48, 0, 49, 0, 50, 0, 51, 0, 52, 0, 53,
|
|
0, 54, 0, 55, 0, 56, 0, 57, 0, 58, 0, 59, 0, 60, 0,
|
|
61, 0, 62, 0, 63, 0, 64, 0, 65, 0, 66, 0, 67, 0, 68,
|
|
0, 69, 0, 70, 0, 71, 0, 72, 0, 73, 0, 74, 0, 75, 0,
|
|
76, 0, 77, 0, 78, 0, 79, 0, 80, 0, 81, 0, 82, 0, 83,
|
|
0, 84, 0, 85, 0, 86, 0, 87, 0, 88, 0, 89, 0, 90, 0,
|
|
91, 0, 92, 0, 93, 0, 94, 0, 95, 0, 96, 0, 97, 0, 98,
|
|
0, 99, 0, 100, 0, 101, 0, 102, 0, 103, 0, 104, 0, 105, 0,
|
|
106, 0, 107, 0, 108, 0, 109, 0, 110, 0, 111, 0, 112, 0, 113;
|
|
}
|
|
|
|
int ccltype[] = { cv::CCL_DEFAULT, cv::CCL_WU, cv::CCL_GRANA, cv::CCL_BOLELLI, cv::CCL_SAUF, cv::CCL_BBDT, cv::CCL_SPAGHETTI };
|
|
|
|
cv::Mat1i labels;
|
|
cv::Mat diff;
|
|
int nLabels = 0;
|
|
for (size_t cclt = 0; cclt < sizeof(ccltype) / sizeof(int); ++cclt) {
|
|
|
|
EXPECT_NO_THROW(nLabels = cv::connectedComponents(input, labels, 8, CV_32S, ccltype[cclt]));
|
|
normalizeLabels(labels, nLabels);
|
|
|
|
diff = labels != output_8c;
|
|
EXPECT_EQ(cv::countNonZero(diff), 0);
|
|
|
|
|
|
EXPECT_NO_THROW(nLabels = cv::connectedComponents(input, labels, 4, CV_32S, ccltype[cclt]));
|
|
normalizeLabels(labels, nLabels);
|
|
|
|
diff = labels != output_4c;
|
|
EXPECT_EQ(cv::countNonZero(diff), 0);
|
|
}
|
|
|
|
}
|
|
|
|
TEST(Imgproc_ConnectedComponents, maxlabels_8conn_even)
|
|
{
|
|
cv::Size size(16, 16);
|
|
cv::Mat1b input(size);
|
|
cv::Mat1i output_8c(size);
|
|
cv::Mat1i output_4c(size);
|
|
|
|
{
|
|
input <<
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0;
|
|
|
|
output_8c <<
|
|
1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
9, 0, 10, 0, 11, 0, 12, 0, 13, 0, 14, 0, 15, 0, 16, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
17, 0, 18, 0, 19, 0, 20, 0, 21, 0, 22, 0, 23, 0, 24, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
25, 0, 26, 0, 27, 0, 28, 0, 29, 0, 30, 0, 31, 0, 32, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
33, 0, 34, 0, 35, 0, 36, 0, 37, 0, 38, 0, 39, 0, 40, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
41, 0, 42, 0, 43, 0, 44, 0, 45, 0, 46, 0, 47, 0, 48, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
49, 0, 50, 0, 51, 0, 52, 0, 53, 0, 54, 0, 55, 0, 56, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
57, 0, 58, 0, 59, 0, 60, 0, 61, 0, 62, 0, 63, 0, 64, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0;
|
|
|
|
output_4c <<
|
|
1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
9, 0, 10, 0, 11, 0, 12, 0, 13, 0, 14, 0, 15, 0, 16, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
17, 0, 18, 0, 19, 0, 20, 0, 21, 0, 22, 0, 23, 0, 24, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
25, 0, 26, 0, 27, 0, 28, 0, 29, 0, 30, 0, 31, 0, 32, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
33, 0, 34, 0, 35, 0, 36, 0, 37, 0, 38, 0, 39, 0, 40, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
41, 0, 42, 0, 43, 0, 44, 0, 45, 0, 46, 0, 47, 0, 48, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
49, 0, 50, 0, 51, 0, 52, 0, 53, 0, 54, 0, 55, 0, 56, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
57, 0, 58, 0, 59, 0, 60, 0, 61, 0, 62, 0, 63, 0, 64, 0,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0;
|
|
}
|
|
|
|
int ccltype[] = { cv::CCL_DEFAULT, cv::CCL_WU, cv::CCL_GRANA, cv::CCL_BOLELLI, cv::CCL_SAUF, cv::CCL_BBDT, cv::CCL_SPAGHETTI };
|
|
|
|
cv::Mat1i labels;
|
|
cv::Mat diff;
|
|
int nLabels = 0;
|
|
for (size_t cclt = 0; cclt < sizeof(ccltype) / sizeof(int); ++cclt) {
|
|
|
|
EXPECT_NO_THROW(nLabels = cv::connectedComponents(input, labels, 8, CV_32S, ccltype[cclt]));
|
|
normalizeLabels(labels, nLabels);
|
|
|
|
diff = labels != output_8c;
|
|
EXPECT_EQ(cv::countNonZero(diff), 0);
|
|
|
|
|
|
EXPECT_NO_THROW(nLabels = cv::connectedComponents(input, labels, 4, CV_32S, ccltype[cclt]));
|
|
normalizeLabels(labels, nLabels);
|
|
|
|
diff = labels != output_4c;
|
|
EXPECT_EQ(cv::countNonZero(diff), 0);
|
|
}
|
|
|
|
}
|
|
|
|
TEST(Imgproc_ConnectedComponents, maxlabels_8conn_odd)
|
|
{
|
|
cv::Size size(15, 15);
|
|
cv::Mat1b input(size);
|
|
cv::Mat1i output_8c(size);
|
|
cv::Mat1i output_4c(size);
|
|
|
|
{
|
|
input <<
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1;
|
|
|
|
output_8c <<
|
|
1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
9, 0, 10, 0, 11, 0, 12, 0, 13, 0, 14, 0, 15, 0, 16,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
17, 0, 18, 0, 19, 0, 20, 0, 21, 0, 22, 0, 23, 0, 24,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
25, 0, 26, 0, 27, 0, 28, 0, 29, 0, 30, 0, 31, 0, 32,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
33, 0, 34, 0, 35, 0, 36, 0, 37, 0, 38, 0, 39, 0, 40,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
41, 0, 42, 0, 43, 0, 44, 0, 45, 0, 46, 0, 47, 0, 48,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
49, 0, 50, 0, 51, 0, 52, 0, 53, 0, 54, 0, 55, 0, 56,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
57, 0, 58, 0, 59, 0, 60, 0, 61, 0, 62, 0, 63, 0, 64;
|
|
|
|
output_4c <<
|
|
1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
9, 0, 10, 0, 11, 0, 12, 0, 13, 0, 14, 0, 15, 0, 16,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
17, 0, 18, 0, 19, 0, 20, 0, 21, 0, 22, 0, 23, 0, 24,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
25, 0, 26, 0, 27, 0, 28, 0, 29, 0, 30, 0, 31, 0, 32,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
33, 0, 34, 0, 35, 0, 36, 0, 37, 0, 38, 0, 39, 0, 40,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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41, 0, 42, 0, 43, 0, 44, 0, 45, 0, 46, 0, 47, 0, 48,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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49, 0, 50, 0, 51, 0, 52, 0, 53, 0, 54, 0, 55, 0, 56,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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57, 0, 58, 0, 59, 0, 60, 0, 61, 0, 62, 0, 63, 0, 64;
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}
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|
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int ccltype[] = { cv::CCL_DEFAULT, cv::CCL_WU, cv::CCL_GRANA, cv::CCL_BOLELLI, cv::CCL_SAUF, cv::CCL_BBDT, cv::CCL_SPAGHETTI };
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|
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cv::Mat1i labels;
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cv::Mat diff;
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int nLabels = 0;
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for (size_t cclt = 0; cclt < sizeof(ccltype) / sizeof(int); ++cclt) {
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|
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EXPECT_NO_THROW(nLabels = cv::connectedComponents(input, labels, 8, CV_32S, ccltype[cclt]));
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normalizeLabels(labels, nLabels);
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|
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diff = labels != output_8c;
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EXPECT_EQ(cv::countNonZero(diff), 0);
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|
|
|
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EXPECT_NO_THROW(nLabels = cv::connectedComponents(input, labels, 4, CV_32S, ccltype[cclt]));
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normalizeLabels(labels, nLabels);
|
|
|
|
diff = labels != output_4c;
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EXPECT_EQ(cv::countNonZero(diff), 0);
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|
}
|
|
|
|
}
|
|
|
|
TEST(Imgproc_ConnectedComponents, single_row)
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|
{
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cv::Size size(1, 15);
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|
cv::Mat1b input(size);
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|
cv::Mat1i output_8c(size);
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|
cv::Mat1i output_4c(size);
|
|
|
|
{
|
|
input <<
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|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1;
|
|
|
|
|
|
output_8c <<
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|
1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8;
|
|
|
|
|
|
output_4c <<
|
|
1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8;
|
|
|
|
}
|
|
|
|
int ccltype[] = { cv::CCL_DEFAULT, cv::CCL_WU, cv::CCL_GRANA, cv::CCL_BOLELLI, cv::CCL_SAUF, cv::CCL_BBDT, cv::CCL_SPAGHETTI };
|
|
|
|
cv::Mat1i labels;
|
|
cv::Mat diff;
|
|
int nLabels = 0;
|
|
for (size_t cclt = 0; cclt < sizeof(ccltype) / sizeof(int); ++cclt) {
|
|
|
|
EXPECT_NO_THROW(nLabels = cv::connectedComponents(input, labels, 8, CV_32S, ccltype[cclt]));
|
|
normalizeLabels(labels, nLabels);
|
|
|
|
diff = labels != output_8c;
|
|
EXPECT_EQ(cv::countNonZero(diff), 0);
|
|
|
|
|
|
EXPECT_NO_THROW(nLabels = cv::connectedComponents(input, labels, 4, CV_32S, ccltype[cclt]));
|
|
normalizeLabels(labels, nLabels);
|
|
|
|
diff = labels != output_4c;
|
|
EXPECT_EQ(cv::countNonZero(diff), 0);
|
|
}
|
|
|
|
}
|
|
|
|
TEST(Imgproc_ConnectedComponents, single_column)
|
|
{
|
|
cv::Size size(15, 1);
|
|
cv::Mat1b input(size);
|
|
cv::Mat1i output_8c(size);
|
|
cv::Mat1i output_4c(size);
|
|
|
|
{
|
|
input <<
|
|
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1;
|
|
|
|
|
|
output_8c <<
|
|
1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8;
|
|
|
|
|
|
output_4c <<
|
|
1, 0, 2, 0, 3, 0, 4, 0, 5, 0, 6, 0, 7, 0, 8;
|
|
|
|
}
|
|
|
|
int ccltype[] = { cv::CCL_DEFAULT, cv::CCL_WU, cv::CCL_GRANA, cv::CCL_BOLELLI, cv::CCL_SAUF, cv::CCL_BBDT, cv::CCL_SPAGHETTI };
|
|
|
|
cv::Mat1i labels;
|
|
cv::Mat diff;
|
|
int nLabels = 0;
|
|
for (size_t cclt = 0; cclt < sizeof(ccltype) / sizeof(int); ++cclt) {
|
|
|
|
EXPECT_NO_THROW(nLabels = cv::connectedComponents(input, labels, 8, CV_32S, ccltype[cclt]));
|
|
normalizeLabels(labels, nLabels);
|
|
|
|
diff = labels != output_8c;
|
|
EXPECT_EQ(cv::countNonZero(diff), 0);
|
|
|
|
|
|
EXPECT_NO_THROW(nLabels = cv::connectedComponents(input, labels, 4, CV_32S, ccltype[cclt]));
|
|
normalizeLabels(labels, nLabels);
|
|
|
|
diff = labels != output_4c;
|
|
EXPECT_EQ(cv::countNonZero(diff), 0);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
TEST(Imgproc_ConnectedComponents, 4conn_regression_21366)
|
|
{
|
|
Mat src = Mat::zeros(Size(10, 10), CV_8UC1);
|
|
{
|
|
Mat labels, stats, centroids;
|
|
EXPECT_NO_THROW(cv::connectedComponentsWithStats(src, labels, stats, centroids, 4));
|
|
}
|
|
}
|
|
|
|
|
|
|
|
}
|
|
} // namespace
|