Reorganized code and added Morphology 2 cpp code

samples/cpp/tutorial_code/ImgProc/BasicLinearTransforms.cpp

@@ -0,0 +1,58 @@
+/**
+ * @file BasicLinearTransforms.cpp
+ * @brief Simple program to change contrast and brightness
+ * @author OpenCV team
+ */
+
+#include <cv.h>
+#include <highgui.h>
+#include <iostream>
+
+using namespace cv;
+
+double alpha; /**< Simple contrast control */
+int beta;  /**< Simple brightness control */
+
+/**
+ * @function main
+ * @brief Main function 
+ */
+int main( int argc, char** argv )
+{
+   /// Read image given by user
+   Mat image = imread( argv[1] );
+   Mat new_image = Mat::zeros( image.size(), image.type() );
+
+   /// Initialize values 
+   std::cout<<" Basic Linear Transforms "<<std::endl;
+   std::cout<<"-------------------------"<<std::endl;
+   std::cout<<"* Enter the alpha value [1.0-3.0]: ";std::cin>>alpha;
+   std::cout<<"* Enter the beta value [0-100]: "; std::cin>>beta;
+
+
+   /// Do the operation new_image(i,j) = alpha*image(i,j) + beta
+   /// Instead of these 'for' loops we could have used simply:
+   /// image.convertTo(new_image, -1, alpha, beta);
+   /// but we wanted to show you how to access the pixels :)
+   for( int y = 0; y < image.rows; y++ )
+      { for( int x = 0; x < image.cols; x++ )
+           { for( int c = 0; c < 3; c++ )
+                {
+		  new_image.at<Vec3b>(y,x)[c] = saturate_cast<uchar>( alpha*( image.at<Vec3b>(y,x)[c] ) + beta );
+                }
+	   }
+      }
+
+   /// Create Windows
+   namedWindow("Original Image", 1);
+   namedWindow("New Image", 1);
+
+   /// Show stuff
+   imshow("Original Image", image);
+   imshow("New Image", new_image);
+
+   
+   /// Wait until user press some key
+   waitKey();
+   return 0;
+}