imgproc: add IntelligentScissors

samples/cpp/CMakeLists.txt

@@ -23,6 +23,9 @@ if(NOT BUILD_EXAMPLES OR NOT OCV_DEPENDENCIES_FOUND)
   return()
 endif()
 
+set(DEPS_example_snippet_imgproc_segmentation opencv_core opencv_imgproc)
+set(DEPS_example_cpp_intelligent_scissors opencv_core opencv_imgproc opencv_imgcodecs opencv_highgui)
+
 project(cpp_samples)
 ocv_include_modules_recurse(${OPENCV_CPP_SAMPLES_REQUIRED_DEPS})
 file(GLOB_RECURSE cpp_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
@@ -32,11 +35,17 @@ endif()
 ocv_list_filterout(cpp_samples "real_time_pose_estimation/")
 foreach(sample_filename ${cpp_samples})
   set(package "cpp")
-  if(sample_filename MATCHES "tutorial_code")
+  if(sample_filename MATCHES "tutorial_code/snippet")
+    set(package "snippet")
+  elseif(sample_filename MATCHES "tutorial_code")
     set(package "tutorial")
   endif()
   ocv_define_sample(tgt ${sample_filename} ${package})
-  ocv_target_link_libraries(${tgt} PRIVATE ${OPENCV_LINKER_LIBS} ${OPENCV_CPP_SAMPLES_REQUIRED_DEPS})
+  set(deps ${OPENCV_CPP_SAMPLES_REQUIRED_DEPS})
+  if(DEFINED DEPS_${tgt})
+    set(deps ${DEPS_${tgt}})
+  endif()
+  ocv_target_link_libraries(${tgt} PRIVATE ${OPENCV_LINKER_LIBS} ${deps})
   if(sample_filename MATCHES "/gpu/" AND HAVE_opencv_cudaarithm AND HAVE_opencv_cuda_filters)
     ocv_target_link_libraries(${tgt} PRIVATE opencv_cudaarithm opencv_cudafilters)
   endif()

samples/cpp/tutorial_code/snippets/imgproc_segmentation.cpp

@@ -0,0 +1,35 @@
+#include "opencv2/imgproc.hpp"
+#include "opencv2/imgproc/segmentation.hpp"
+
+using namespace cv;
+
+static
+void usage_example_intelligent_scissors()
+{
+    Mat image(Size(1920, 1080), CV_8UC3, Scalar::all(128));
+
+    //! [usage_example_intelligent_scissors]
+    segmentation::IntelligentScissorsMB tool;
+    tool.setEdgeFeatureCannyParameters(16, 100)  // using Canny() as edge feature extractor
+        .setGradientMagnitudeMaxLimit(200);
+
+    // calculate image features
+    tool.applyImage(image);
+
+    // calculate map for specified source point
+    Point source_point(200, 100);
+    tool.buildMap(source_point);
+
+    // fast fetching of contours
+    // for specified target point and the pre-calculated map (stored internally)
+    Point target_point(400, 300);
+    std::vector<Point> pts;
+    tool.getContour(target_point, pts);
+    //! [usage_example_intelligent_scissors]
+}
+
+int main()
+{
+    usage_example_intelligent_scissors();
+    return 0;
+}