add part of opencv

Lib/opencv/sources/modules/imgproc/test/test_connectedcomponents.cpp

@@ -0,0 +1,153 @@
+/*M///////////////////////////////////////////////////////////////////////////////////////
+//
+//  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
+//
+//  By downloading, copying, installing or using the software you agree to this license.
+//  If you do not agree to this license, do not download, install,
+//  copy or use the software.
+//
+//
+//                           License Agreement
+//                For Open Source Computer Vision Library
+//
+// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
+// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
+// Third party copyrights are property of their respective owners.
+//
+// Redistribution and use in source and binary forms, with or without modification,
+// are permitted provided that the following conditions are met:
+//
+//   * Redistribution's of source code must retain the above copyright notice,
+//     this list of conditions and the following disclaimer.
+//
+//   * Redistribution's in binary form must reproduce the above copyright notice,
+//     this list of conditions and the following disclaimer in the documentation
+//     and/or other materials provided with the distribution.
+//
+//   * The name of the copyright holders may not be used to endorse or promote products
+//     derived from this software without specific prior written permission.
+//
+// This software is provided by the copyright holders and contributors "as is" and
+// any express or implied warranties, including, but not limited to, the implied
+// warranties of merchantability and fitness for a particular purpose are disclaimed.
+// In no event shall the Intel Corporation or contributors be liable for any direct,
+// indirect, incidental, special, exemplary, or consequential damages
+// (including, but not limited to, procurement of substitute goods or services;
+// loss of use, data, or profits; or business interruption) however caused
+// and on any theory of liability, whether in contract, strict liability,
+// or tort (including negligence or otherwise) arising in any way out of
+// the use of this software, even if advised of the possibility of such damage.
+//
+//M*/
+
+#include "test_precomp.hpp"
+
+namespace opencv_test { namespace {
+
+class CV_ConnectedComponentsTest : public cvtest::BaseTest
+{
+public:
+    CV_ConnectedComponentsTest();
+    ~CV_ConnectedComponentsTest();
+protected:
+    void run(int);
+};
+
+CV_ConnectedComponentsTest::CV_ConnectedComponentsTest() {}
+CV_ConnectedComponentsTest::~CV_ConnectedComponentsTest() {}
+
+// This function force a row major order for the labels
+void normalizeLabels(Mat1i& imgLabels, int iNumLabels) {
+    vector<int> vecNewLabels(iNumLabels + 1, 0);
+    int iMaxNewLabel = 0;
+
+    for (int r = 0; r<imgLabels.rows; ++r) {
+        for (int c = 0; c<imgLabels.cols; ++c) {
+            int iCurLabel = imgLabels(r, c);
+            if (iCurLabel>0) {
+                if (vecNewLabels[iCurLabel] == 0) {
+                    vecNewLabels[iCurLabel] = ++iMaxNewLabel;
+                }
+                imgLabels(r, c) = vecNewLabels[iCurLabel];
+            }
+        }
+    }
+}
+
+
+void CV_ConnectedComponentsTest::run( int /* start_from */)
+{
+
+    int ccltype[] = { cv::CCL_WU, cv::CCL_DEFAULT, cv::CCL_GRANA };
+
+    string exp_path = string(ts->get_data_path()) + "connectedcomponents/ccomp_exp.png";
+    Mat exp = imread(exp_path, 0);
+    Mat orig = imread(string(ts->get_data_path()) + "connectedcomponents/concentric_circles.png", 0);
+
+    if (orig.empty())
+    {
+        ts->set_failed_test_info(cvtest::TS::FAIL_INVALID_TEST_DATA);
+        return;
+    }
+
+    Mat bw = orig > 128;
+
+    for (uint cclt = 0; cclt < sizeof(ccltype)/sizeof(int); ++cclt)
+    {
+
+        Mat1i labelImage;
+        int nLabels = connectedComponents(bw, labelImage, 8, CV_32S, ccltype[cclt]);
+
+        normalizeLabels(labelImage, nLabels);
+
+        // Validate test results
+        for (int r = 0; r < labelImage.rows; ++r){
+            for (int c = 0; c < labelImage.cols; ++c){
+                int l = labelImage.at<int>(r, c);
+                bool pass = l >= 0 && l <= nLabels;
+                if (!pass){
+                    ts->set_failed_test_info(cvtest::TS::FAIL_INVALID_OUTPUT);
+                    return;
+                }
+            }
+        }
+
+        if (exp.empty() || orig.size() != exp.size())
+        {
+            imwrite(exp_path, labelImage);
+            exp = labelImage;
+        }
+
+        if (0 != cvtest::norm(labelImage > 0, exp > 0, NORM_INF))
+        {
+            ts->set_failed_test_info(cvtest::TS::FAIL_MISMATCH);
+            return;
+        }
+        if (nLabels != cvtest::norm(labelImage, NORM_INF) + 1)
+        {
+            ts->set_failed_test_info(cvtest::TS::FAIL_MISMATCH);
+            return;
+        }
+
+    }
+
+    ts->set_failed_test_info(cvtest::TS::OK);
+}
+
+TEST(Imgproc_ConnectedComponents, regression) { CV_ConnectedComponentsTest test; test.safe_run(); }
+
+TEST(Imgproc_ConnectedComponents, grana_buffer_overflow)
+{
+    cv::Mat darkMask;
+    darkMask.create(31, 87, CV_8U);
+    darkMask = 0;
+
+    cv::Mat labels;
+    cv::Mat stats;
+    cv::Mat centroids;
+
+    int nbComponents = cv::connectedComponentsWithStats(darkMask, labels, stats, centroids, 8, CV_32S, cv::CCL_GRANA);
+    EXPECT_EQ(1, nbComponents);
+}
+
+}} // namespace