added cvSave(contours) to the contours demo; added rational model demonstration…

added cvSave(contours) to the contours demo; added rational model demonstration to stereo_calib; fixed formatting in imgproc/types_c.h

samples/c/contours.c

-#include <opencv2/imgproc/imgproc.hpp>
+#include <opencv2/imgproc/imgproc_c.h>
 #include <opencv2/highgui/highgui.hpp>
 #include <stdio.h>
 void help()
@@ -76,6 +76,12 @@ int main( int argc, char** argv )
 
     cvFindContours( img, storage, &contours, sizeof(CvContour),
                     CV_RETR_TREE, CV_CHAIN_APPROX_SIMPLE, cvPoint(0,0) );
+    
+    {
+    const char* attrs[] = {"recursive", "1", 0};
+    cvSave("contours.xml", contours, 0, 0, cvAttrList(attrs, 0));
+    contours = (CvSeq*)cvLoad("contours.xml", storage, 0, 0);
+    }
 
     // comment this out if you do not want approximation
     contours = cvApproxPoly( contours, sizeof(CvContour), storage, CV_POLY_APPROX_DP, 3, 1 );

samples/cpp/stereo_calib.cpp

@@ -169,7 +169,9 @@ StereoCalib(const vector<string>& imagelist, Size boardSize, bool useCalibrated=
                     TermCriteria(CV_TERMCRIT_ITER+CV_TERMCRIT_EPS, 100, 1e-5),
                     CV_CALIB_FIX_ASPECT_RATIO +
                     CV_CALIB_ZERO_TANGENT_DIST +
-                    CV_CALIB_SAME_FOCAL_LENGTH);
+                    CV_CALIB_SAME_FOCAL_LENGTH +
+                    CV_CALIB_RATIONAL_MODEL +
+                    CV_CALIB_FIX_K3 + CV_CALIB_FIX_K4 + CV_CALIB_FIX_K5);
     cout << "done with RMS error=" << rms << endl;
     
 // CALIBRATION QUALITY CHECK