My former student John Tsau forwarded me some other examples of pictures that can be seen in different ways. What we can see is to a large extent conditioned what we expect to see in the world in the first place…
Gestalt psychologists have worked out these principles as guiding our perception.
• Proximity: We tend to group things together that are close together in space.
• Similarity: We tend to group things together that are similar
• Good Continuation: We tend to perceive things in good form
• Closure: We tend to make our experience as complete as possible
• Figure and Ground: We tend to organize our perceptions by distinguishing between a figure and a background.
Source: turnyourhead.com
A Rider coming and going
Via Markus Seitz (University of St. Gallen)