Merge pull request #2950 from drf5n:patch-1

* Sanity check tutorial_charuco_create_detect.cpp::readCameraParameters()

* check both camMatrix and distCoeffs sizes

* check only widths of camMatrix and distCoeffs matrixes

* check sizes of camMatrix and distCoeffs matrixes

* check size of only camMatrix

modules/aruco/samples/tutorial_charuco_create_detect.cpp

@@ -21,7 +21,7 @@ static bool readCameraParameters(std::string filename, cv::Mat& camMatrix, cv::M
         return false;
     fs["camera_matrix"] >> camMatrix;
     fs["distortion_coefficients"] >> distCoeffs;
-    return true;
+    return (camMatrix.size() == cv::Size(3,3)) ;
 }
 
 void createBoard()
@@ -161,4 +161,4 @@ int main(int argc, char* argv[])
         break;
     }
     return 0;
-}
+}