rename sample dir

link bug fix

modules/ccalib/samples/random_pattern_generator.cpp

@@ -0,0 +1,59 @@
+#include "opencv2/ccalib/randpattern.hpp"
+
+using namespace cv;
+
+const char * usage =
+    "\n example command line for generating a random pattern. \n"
+    "   random_patterng_generator -iw 600 -ih 850 pattern.png\n"
+    "\n";
+
+static void help()
+{
+    printf("\n This is a sample for generating a random pattern that can be used for calibration.\n"
+        "Usage: random_patterng_generator\n"
+        "    -iw <image_width> # the width of pattern image\n"
+        "    -ih <image_height> # the height of pattern image\n"
+        "    filename # the filename for pattern image \n"
+        );
+    printf("\n %s", usage);
+}
+
+int main(int argc, char** argv)
+{
+    const char* filename = 0;
+    Mat pattern;
+    int width, height;
+    if(argc < 2)
+    {
+        help();
+        return 1;
+    }
+
+    for (int i = 1; i < argc; ++i)
+    {
+        const char* s = argv[i];
+        if(strcmp(s, "-iw") == 0)
+        {
+            if(sscanf(argv[++i], "%d", &width) != 1 || width <= 0)
+                return fprintf( stderr, "Invalid pattern image width\n"), -1;
+        }
+        else if(strcmp(s, "-ih") == 0)
+        {
+            if(sscanf(argv[++i], "%d", &height) != 1 || height <= 0)
+                return fprintf( stderr, "Invalid pattern image height\n"), -1;
+        }
+        else if( s[0] != '-')
+        {
+            filename = s;
+        }
+        else
+        {
+            return fprintf( stderr, "Unknown option %s\n", s ), -1;
+        }
+    }
+
+    randpattern::RandomPatternGenerator generator(width, height);
+    generator.generatePattern();
+    pattern = generator.getPattern();
+    imwrite(filename, pattern);
+}