Question

I’m trying to visualize 2 successive images using OpenCV

Here are the 3 matrices I am computing:

projectionResult_img_debug = cvReshape( projectionResult_line, &row_header_temp, 0,    rect_list[9].height );
projectionResult_img_debug2 = cvReshape( AverageImg_line, &row_header_temp2, 0, rect_list[9].height );
projectionResult_img = cvReshape( projectionResult_line2, &row_header_temp3, 0, rect_list[9].height );


//debug:                                printMatrixValues(projectionResult_line, 1200, 1250);
printMatrixValues(AverageImg_line, 1200, 1250);
printMatrixValues(projectionResult_line2, 1200, 1250);

IplImage img_t;
IplImage* img_t2 = cvGetImage( projectionResult_img_debug,  &img_t );


IplImage img_t_2;
IplImage* img_t2_2 = cvGetImage( projectionResult_img,  &img_t );

My problem is that the 2 images that are displayed are the same, and are ALWAYS displaying the last matrix that I have computed (in this case it’s the one on line 3).

Any idea of where the problem is?

Answer 1

Like @karlphillip says, your code sample is incomplete. But it looks like the second argument in IplImage* img_t2_2 = cvGetImage( projectionResult_img, &img_t ); should probably be img_t_2.