摘要 |
<p>A visual advertisement is disclosed which is carried by a substrate. The advertisement comprises a first inverse perspective transformation image (48) and a contiguous second inverse perspective transformation image (46). The images (48,46) are inverted with respect to one another. The first image (48), when the images are viewed in one direction, is the predominant image and the second image (46) is a subsidiary image. When the images (48,46) are viewed in the opposite direction the second image (46) is the predominant image and the first image (48) is the subsidiary image.</p> |