OpenCV Examples Part 1

Nov 4, 2008 | Tags: OpenCV | del.icio.us del.icio.us | digg Digg

4. Copy an Image

This sample loads an image and copy it to a new file. The program takes 2 parameters: the image name and a new filename.

Listing 3: Copy an image

  1. /* load source image */
  2. IplImage *src = cvLoadImage( argv[1], CV_LOAD_IMAGE_COLOR );
  3.  
  4. /* get properties, needed to create dest image */
  5. int width     = src->width;
  6. int height    = src->height;
  7. int depth     = src->depth;
  8. int nchannels = src->nChannels;
  9.  
  10. /* create destination image */
  11. IplImage *dst = cvCreateImage( cvSize( width, height ),
  12.                                depth, nchannels );
  13.  
  14. /* copy from source to dest */
  15. cvCopy( src, dst, NULL );
  16.  
  17. /* and save to file */
  18. cvSaveImage( argv[2], dst );

Note that I remove all error checking lines from the code above to make things simple.

3. Retrieve Image Properties 5. Convert RGB to Grayscale

In this page

  1. Introduction
  2. Load an Image
  3. Retrieve Image Properties
  4. Copy an Image
  5. Convert RGB to Grayscale
  6. Access Image Data
  7. Conclusion
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