Hello, I'm using opencv2.7 and i tried to take a colored image convert it into gray scale and store it..But when i execute it says:

editimg.c: In function ‘main’: editimg.c:10:2: error: unknown type name ‘Mat’ editimg.c:13:25: error: request for member ‘data’ in something not a structure or union editimg.c:15:4: warning: incompatible implicit declaration of built-in function ‘printf’ [enabled by default] editimg.c:19:2: error: unknown type name ‘Mat’

And here is my code:

include <cv.h>

include <highgui.h>

int main( int argc, char* argv ) { char imageName = argv[1];

Mat image; image = imread( imageName, 1 );

if( argc != 2 || !image.data ) { printf( " No image data \n " ); return -1; }

Mat gray_image; cvtColor( image, gray_image, CV_BGR2GRAY );

imwrite( "/home/sumukha/sumukha/opencvsamples/Gray_Image.jpg", gray_image );

namedWindow( imageName, CV_WINDOW_AUTOSIZE ); namedWindow( "Gray image", CV_WINDOW_AUTOSIZE );

imshow( imageName, image ); imshow( "Gray image", gray_image );

waitKey(0);

return 0; }

Hello, I'm using opencv2.7 and i tried to take a colored image convert it into gray scale and store it..But when i execute it says:

editimg.c: In function ‘main’:
editimg.c:10:2: error: unknown type name ‘Mat’
editimg.c:13:25: error: request for member ‘data’ in something not a structure or union
editimg.c:15:4: warning: incompatible implicit declaration of built-in function ‘printf’ [enabled by default]
editimg.c:19:2: error: unknown type name ‘Mat’
‘Mat’

#include <cv.h>
#include <highgui.h>

int main( int argc, char* char** argv )
{
char char* imageName = argv[1];
 
argv[1];
Mat image;
image = imread( imageName, 1 );
 
);
if( argc != 2 || !image.data )
{
printf( " No image data \n " );
return -1;
}
 
}
Mat gray_image;
cvtColor( image, gray_image, CV_BGR2GRAY );
 
);
imwrite( "/home/sumukha/sumukha/opencvsamples/Gray_Image.jpg", gray_image );
 
);
namedWindow( imageName, CV_WINDOW_AUTOSIZE );
namedWindow( "Gray image", CV_WINDOW_AUTOSIZE );
 
);
imshow( imageName, image );
imshow( "Gray image", gray_image );
 
waitKey(0);
 
);
waitKey(0);
return 0;
}}

Hello, I'm using opencv2.7 and i tried to take a colored image convert it into gray scale and store it..But when i execute it says:

editimg.c: In function ‘main’:
editimg.c:10:2: error: unknown type name ‘Mat’
editimg.c:13:25: error: request for member ‘data’ in something not a structure or union
editimg.c:15:4: warning: incompatible implicit declaration of built-in function ‘printf’ [enabled by default]
editimg.c:19:2: error: unknown type name ‘Mat’

And here is my code:

#include <cv.h>
#include <highgui.h>

int main( int argc, char** argv )
{
 char* imageName = argv[1];

 Mat image;
 image = imread( imageName, 1 );

 if( argc != 2 || !image.data )
 {
   printf( " No image data \n " );
   return -1;
 }

 Mat gray_image;
 cvtColor( image, gray_image, CV_BGR2GRAY );

 imwrite( "/home/sumukha/sumukha/opencvsamples/Gray_Image.jpg", gray_image );

 namedWindow( imageName, CV_WINDOW_AUTOSIZE );
 namedWindow( "Gray image", CV_WINDOW_AUTOSIZE );

 imshow( imageName, image );
 imshow( "Gray image", gray_image );

 waitKey(0);

 return 0;
}