Fix trackbar in falsecolor cpp sample

samples/cpp/falsecolor.cpp

@@ -16,14 +16,14 @@ struct ParamColorMap {
 String winName="False color";
 static const String ColorMaps[] = { "Autumn", "Bone", "Jet", "Winter", "Rainbow", "Ocean", "Summer", "Spring",
                                     "Cool", "HSV", "Pink", "Hot", "Parula", "Magma", "Inferno", "Plasma", "Viridis",
-                                    "Cividis", "Twilight", "Twilight Shifted", "Turbo", "User defined (random)" };
+                                    "Cividis", "Twilight", "Twilight Shifted", "Turbo", "Deep Green", "User defined (random)" };
 
 static void TrackColorMap(int x, void *r)
 {
     ParamColorMap *p = (ParamColorMap*)r;
     Mat dst;
     p->iColormap= x;
-    if (x == COLORMAP_TURBO + 1)
+    if (x == COLORMAP_DEEPGREEN + 1)
     {
         Mat lutRND(256, 1, CV_8UC3);
         randu(lutRND, Scalar(0, 0, 0), Scalar(255, 255, 255));
@@ -97,10 +97,10 @@ int main(int argc, char** argv)
 
     imshow("Gray image",img);
     namedWindow(winName);
-    createTrackbar("colormap", winName,&p.iColormap,1,TrackColorMap,(void*)&p);
+    createTrackbar("colormap", winName, NULL, COLORMAP_DEEPGREEN + 1, TrackColorMap, (void*)&p);
     setTrackbarMin("colormap", winName, COLORMAP_AUTUMN);
-    setTrackbarMax("colormap", winName, COLORMAP_TURBO+1);
-    setTrackbarPos("colormap", winName, -1);
+    setTrackbarMax("colormap", winName, COLORMAP_DEEPGREEN + 1);
+    setTrackbarPos("colormap", winName, COLORMAP_AUTUMN);
 
     TrackColorMap(0, (void*)&p);