vendor: OpenCV 5.0.0 snapshot at 755e50675d97db9b7d449d8bd6b09888646f6c6e

2026-08-22 00:11:13 +08:00
commit 12022378a3
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+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html.
+
+#include "precomp.hpp"
+
+using namespace cv;
+using namespace cv::cuda;
+
+#if !defined (HAVE_CUDA) || defined (CUDA_DISABLER)
+
+void cv::cuda::connectedComponents(InputArray, OutputArray, int, int, ConnectedComponentsAlgorithmsTypes) { throw_no_cuda(); }
+void cv::cuda::connectedComponents(InputArray, OutputArray, int, int) { throw_no_cuda(); }
+
+#else /* !defined (HAVE_CUDA) */
+
+namespace cv { namespace cuda { namespace device { namespace imgproc {
+        void BlockBasedKomuraEquivalence(const cv::cuda::GpuMat& img, cv::cuda::GpuMat& labels);
+}}}}
+
+
+void cv::cuda::connectedComponents(InputArray img_, OutputArray labels_, int connectivity,
+    int ltype, ConnectedComponentsAlgorithmsTypes ccltype) {
+    const cv::cuda::GpuMat img = img_.getGpuMat();
+    cv::cuda::GpuMat& labels = labels_.getGpuMatRef();
+
+    CV_Assert(img.channels() == 1);
+    CV_Assert(connectivity == 8);
+    CV_Assert(ltype == CV_32S);
+    CV_Assert(ccltype == CCL_BKE || ccltype == CCL_DEFAULT);
+
+    int iDepth = img_.depth();
+    CV_Assert(iDepth == CV_8U || iDepth == CV_8S);
+
+    labels.create(img.size(), CV_MAT_DEPTH(ltype));
+
+    if ((ccltype == CCL_BKE || ccltype == CCL_DEFAULT) && connectivity == 8 && ltype == CV_32S) {
+        using cv::cuda::device::imgproc::BlockBasedKomuraEquivalence;
+        BlockBasedKomuraEquivalence(img, labels);
+    }
+
+}
+
+void cv::cuda::connectedComponents(InputArray img_, OutputArray labels_, int connectivity, int ltype) {
+    cv::cuda::connectedComponents(img_, labels_, connectivity, ltype, CCL_DEFAULT);
+}
+
+
+#endif /* !defined (HAVE_CUDA) */