telegraph.co.uk
Asphalt Renaissance: The Pavement Art and 3-D Illusions of Kurt Wenner
says: "The pieces look real because they are calculated to be perfectly and mathematically accurate. It's exactly how they would look if the objects in my paintings were actually there. I use a piece of string to measure fixed points between the viewing location and the painting. This lets me calculate exactly how the perspective should be. It takes me around five to seven days to complete an average sized piece."
The Telegraph
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