How can I display an OpenCV IplImage in Gtk+/Gtkmm?

Question

I've got images as IplImage that I want to display in a small Gtkmm application. How can I convert them to something Gtk can display?

Answer 1

You can create a new pixbuf using gdk_new_pixbuf_from_data() passing it the image format parameters corresponding to the format of the IplImage. The IplImage image data is accessed via the imageData field.

Here is some example code from a Gtk forum.

Answer 2

Posting OP's solution as answer:

IplImage* image;
cvCvtColor(image, image, CV_BGR2RGB);
Glib::RefPtr<Gdk::Pixbuf> pixbuf = Gdk::Pixbuf::create_from_data(
        (guint8*)image->imageData,
        Gdk::COLORSPACE_RGB,
        false,
        image->depth,
        image->width,
        image->height,
        image->widthStep);

Gtk::Image gtk_img;
gtk_img.set(pixbuf);