samples(gpu): cleanup samples for legacy API

samples/gpu/CMakeLists.txt

@@ -21,7 +21,6 @@ set(OPENCV_CUDA_SAMPLES_REQUIRED_DEPS
   opencv_cudaoptflow
   opencv_cudabgsegm
   opencv_cudastereo
-  opencv_cudalegacy
   opencv_cudaobjdetect)
 ocv_check_dependencies(${OPENCV_CUDA_SAMPLES_REQUIRED_DEPS})
 

samples/gpu/bgfg_segm.cpp

@@ -4,7 +4,6 @@
 #include "opencv2/core.hpp"
 #include "opencv2/core/utility.hpp"
 #include "opencv2/cudabgsegm.hpp"
-#include "opencv2/cudalegacy.hpp"
 #include "opencv2/video.hpp"
 #include "opencv2/highgui.hpp"
 
@@ -16,8 +15,6 @@ enum Method
 {
     MOG,
     MOG2,
-    GMG,
-    FGD_STAT
 };
 
 int main(int argc, const char** argv)
@@ -25,7 +22,7 @@ int main(int argc, const char** argv)
     cv::CommandLineParser cmd(argc, argv,
         "{ c camera |                    | use camera }"
         "{ f file   | ../data/vtest.avi  | input video file }"
-        "{ m method | mog                | method (mog, mog2, gmg, fgd) }"
+        "{ m method | mog                | method (mog, mog2) }"
         "{ h help   |                    | print help message }");
 
     if (cmd.has("help") || !cmd.check())
@@ -40,9 +37,7 @@ int main(int argc, const char** argv)
     string method = cmd.get<string>("method");
 
     if (method != "mog"
-        && method != "mog2"
-        && method != "gmg"
-        && method != "fgd")
+        && method != "mog2")
     {
         cerr << "Incorrect method" << endl;
         return -1;
@@ -50,8 +45,8 @@ int main(int argc, const char** argv)
 
     Method m = method == "mog" ? MOG :
                method == "mog2" ? MOG2 :
-               method == "fgd" ? FGD_STAT :
-                                  GMG;
+                                  (Method)-1;
+    CV_Assert(m != (Method)-1);
 
     VideoCapture cap;
 
@@ -73,8 +68,6 @@ int main(int argc, const char** argv)
 
     Ptr<BackgroundSubtractor> mog = cuda::createBackgroundSubtractorMOG();
     Ptr<BackgroundSubtractor> mog2 = cuda::createBackgroundSubtractorMOG2();
-    Ptr<BackgroundSubtractor> gmg = cuda::createBackgroundSubtractorGMG(40);
-    Ptr<BackgroundSubtractor> fgd = cuda::createBackgroundSubtractorFGD();
 
     GpuMat d_fgmask;
     GpuMat d_fgimg;
@@ -93,23 +86,12 @@ int main(int argc, const char** argv)
     case MOG2:
         mog2->apply(d_frame, d_fgmask);
         break;
-
-    case GMG:
-        gmg->apply(d_frame, d_fgmask);
-        break;
-
-    case FGD_STAT:
-        fgd->apply(d_frame, d_fgmask);
-        break;
     }
 
     namedWindow("image", WINDOW_NORMAL);
     namedWindow("foreground mask", WINDOW_NORMAL);
     namedWindow("foreground image", WINDOW_NORMAL);
-    if (m != GMG)
-    {
-        namedWindow("mean background image", WINDOW_NORMAL);
-    }
+    namedWindow("mean background image", WINDOW_NORMAL);
 
     for(;;)
     {
@@ -132,15 +114,6 @@ int main(int argc, const char** argv)
             mog2->apply(d_frame, d_fgmask);
             mog2->getBackgroundImage(d_bgimg);
             break;
-
-        case GMG:
-            gmg->apply(d_frame, d_fgmask);
-            break;
-
-        case FGD_STAT:
-            fgd->apply(d_frame, d_fgmask);
-            fgd->getBackgroundImage(d_bgimg);
-            break;
         }
 
         double fps = cv::getTickFrequency() / (cv::getTickCount() - start);