To remove all images from a document page.

PDFDoc doc(filename);
Page page = doc.GetPage(1);

ElementWriter writer;
ElementReader reader;
reader.Begin(page);
writer.Begin(page, ElementWriter::e_replacement, false);

Element element;
while (element = reader.Next()) // Read page contents
{
    switch (element.GetType())
    {
        case Element::e_image: 
        case Element::e_inline_image: 
            // remove all images by skipping them			
            break;
        default:
            writer.WriteElement(element);
            break;
    }
}

writer.End();
reader.End();

PDF Editor (Programmatic)
Full code sample which strips all images from the page and changes text color to blue.