added an example call

diff --git a/samples/c/facedetect.cpp b/samples/c/facedetect.cpp
index 4fbe055..9e12eaa 100644 (file)
--- a/samples/c/facedetect.cpp
+++ b/samples/c/facedetect.cpp
@@ -10,13 +10,16 @@ using namespace cv;
 
 void help()
 {
-    cout << "\n This program demonstrates the haar cascade recognizer\n"
+    cout << "\nThis program demonstrates the haar cascade recognizer\n"
                "this classifier can recognize many ~rigid objects, it's most known use is for faces.\n"
        "Usage:\n"
-       "./facedetect [--cascade=<cascade_path>]\n"
-        "   [--nested-cascade[=nested_cascade_path]]\n"
-        "   [--scale=<image scale greater or equal to 1>\n"
-        "   [filename|camera_index]\n" << endl;;
+       "./facedetect [--cascade=<cascade_path> this is the primary trained classifier such as frontal face]\n"
+        "   [--nested-cascade[=nested_cascade_path this an optional secondary classifier such as eyes]]\n"
+        "   [--scale=<image scale greater or equal to 1, try 1.3 for example>\n"
+        "   [filename|camera_index]\n\n"
+               "see facedetect.cmd for one call:\n"
+               "./facedetect --cascade=\"../../data/haarcascades/haarcascade_frontalface_alt.xml\" --nested-cascade=\"../../data/haarcascades/haarcascade_eye.xml\" --scale=1.3 \n"
+       "Hit any key to quit.\n" << endl;
 }
 
 void detectAndDraw( Mat& img,