This creates and adds two new files to the project work space, "MyIplClass.ccp" and "MyIplClass.h" can be seen in the FVB, with constructor MyIplClass() destructor ~MyIplClass() in the CVB.
Double click on "MyApplication.h" and add the line:

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#include "MyIplClass.h"
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Below the "include resource.h" and move the other include directives to "MyIplClass.h" (double click on FVB to get there) just before the class declaration also do a include of ipl.h:

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#include "cv.h"
#include "HighGUI.h"
#define IMAGE_WIDTH 128
#define IMAGE_HEIGHT 128
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Right click on "MyIplClass" in the CVB and add a public member variable "IplImage*" called "m_Ipl". Double click on the constructor "MyIplClas()" to get to the code and add the following lines:

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     // Create the IPL image
     m_Ipl = cvCreateImage( cvSize(IMAGE_WIDTH,IMAGE_HEIGHT), IPL_DEPTH_8U, 1 );
     // Use this line if the bitmap is 24 bit
     //m_Ipl = cvCreateImage( cvSize(IMAGE_WIDTH,IMAGE_HEIGHT), IPL_DEPTH_8U, 3 );
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And double click on the destructor ~MyIplClass() in the CVB and add the code:

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     cvReleaseImage(&m_Ipl);
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Right click on "MyIplClass" in the CVB and add a member function called GetIplData(IplImage* ipl) and of type void. Double click on the new function and add the line:

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     memcpy(ipl->imageData, m_Ipl->imageData, m_Ipl->imageSize);
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Right click on "MyIplClass" in the CVB and add a member function called LoadBMP(CString FileName) of type void with the lines:

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     // Do it the easy way with HighGUI BMP, DIB,JPEG, JPG, JPE,PNG,PBM, PGM, PPM, SR, RAS, TIFF, TIF
     // m_Ipl = cvLoadImage( FileName, 0);
     // Or the hard way:
     BOOL ok = TRUE;
     CFile SrcFile;
     char *ReadBuffer; // Pointer to read buffer
     char *OutputBuffer; // Pointer to output buffer

     BITMAPFILEHEADER BmpFileHeader;
     unsigned int BmpHeadSize;
     char *BmpHeadPtr;
     BITMAPINFOHEADER *BmpInfoPtr;

     int i;

     if ( !SrcFile.Open( FileName, ( CFile::modeRead | CFile::typeBinary), NULL ) )
     {
          AfxMessageBox("Could not open file");
     }
     // Read the BMP File header
     ok = ok && ( SrcFile.Read( &BmpFileHeader, sizeof( BmpFileHeader )) == sizeof( BmpFileHeader ));

     // Test settings in BMP file header.
     ok = ok && ( BmpFileHeader.bfType == 'MB' ); /* Bitmap file */

     // Find the size of the rest of the BMP header
     BmpHeadSize = BmpFileHeader.bfOffBits - sizeof( BmpFileHeader );

     // Allocate space for the rest of the BMP header
     BmpHeadPtr = new char[ BmpHeadSize ];

     ok = ok && ( BmpHeadPtr != NULL );

     // Read the rest of the BMP header - Info part and color table part
     ok = ok && ( SrcFile.Read( BmpHeadPtr, BmpHeadSize ) == BmpHeadSize );

     // Make a cast to the type we think is the Info part of the header
     BmpInfoPtr = ( BITMAPINFOHEADER* ) BmpHeadPtr;

     // Test settings in BMP info header.

     ok = ok && ( BmpInfoPtr->biSize == sizeof( BITMAPINFOHEADER ) );
     ok = ok && ( BmpInfoPtr->biWidth == IMAGE_WIDTH );
     ok = ok && ( BmpInfoPtr->biHeight == IMAGE_HEIGHT );
     ok = ok && ( BmpInfoPtr->biPlanes == 1 );
     ok = ok && ( BmpInfoPtr->biBitCount == 8 );
     // Use this line if the bitmap is 24 bit
     // ok = ok && ( BmpInfoPtr->biBitCount == 24 );
     ok = ok && ( BmpInfoPtr->biCompression == BI_RGB );
     ok = ok && ( BmpInfoPtr->biSizeImage == IMAGE_HEIGHT * IMAGE_WIDTH );
     // Use this line if the bitmap is 24 bit
     //ok = ok && ( BmpInfoPtr->biSizeImage == IMAGE_HEIGHT * IMAGE_WIDTH * 3 );

     if (ok)
     {
         // Allocate a buffer for destination data
         ReadBuffer = new char[ BmpInfoPtr->biSizeImage ];

         // Read the BMP data from the source file
         SrcFile.Read( ReadBuffer, BmpInfoPtr->biSizeImage );

         // Allocate a buffer for upside down corrected data
         OutputBuffer = new char[ BmpInfoPtr->biSizeImage ];

         for(i = 0; i < IMAGE_HEIGHT; i++)
         {
             memcpy(&OutputBuffer[(IMAGE_HEIGHT - i - 1) * IMAGE_WIDTH], &ReadBuffer[i * IMAGE_WIDTH], IMAGE_WIDTH);
             // Use this line if the bitmap is 24 bit
             // memcpy(&OutputBuffer[(IMAGE_HEIGHT - i - 1) * IMAGE_WIDTH*3], &ReadBuffer[i * IMAGE_WIDTH*3], IMAGE_WIDTH*3);
         }

         // Now copy the read data to the IPL structure
         memcpy(m_Ipl->imageData, OutputBuffer, BmpInfoPtr->biSizeImage );
         delete OutputBuffer;
         delete ReadBuffer;
     }
     else
     {
         AfxMessageBox("Wrong image size");
     }
     delete BmpHeadPtr;

     SrcFile.Close();

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Now click on the RVB (Resource View Browser), then on "MyApplication resources" then double click on "ID_MYAPPLICATION_DIALOG" this brings you to the Dialog Editor Window.
Drag a button from the tool line to a corner of your dialog, right click on the button and then click on the "Properties"to be able to edit the properties for this control. In the "ID:" field write "IDC_PROCESS" and in the "Caption" field write "Process" close the properties window.
Double click on the created button to make a function named "OnProcess" and get to the code part of this function. Add the lines:

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     MyIplClass *Img= new MyIplClass;
     CString filename;
     // This file should be part of the OpenCV kit.
     filename = "C:\\Program Files\\Intel\\opencv\\tests\\cv\\testdata\\snakes\\ring.bmp";
     Img->LoadBMP(filename);
     Img->GetIplData( TheImage );
     delete Img;
     RedrawWindow(NULL, NULL, RDW_INVALIDATE ); //Force update of dialog;
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Thats it hit F5 to build and run, when the "Process" button is pressed the ring appears.

Press on the link to use the openCV on the bitmap file.

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Last updated
May 3 - 2004: My counter from freewebcounter.com created popups, so a new counter is used.
June 18 2003 : Use of HighGUI in bmp load added.
May 5 2003 : Added a delete in the function OnProcess() to avoid memory leaks.