Anamorposis is an illusion where a specific vantage point is needed for the image to come together.  French artist Bernard Pras has made an art of assemblage. This, his latest piece,  is a portrait of Malian actor Sotigui Kouyaté.

You can see it is composed of clothes, paint, wood, rubber, and other objects scraped together.

It's only when seen through his camera that the portrait comes together.