He creates these 3D images by skillfully combining the perfect lighting, shadowing, and anamorphosis. Watch the video to see how much these drawings transform just by changing your viewing perspective. See more examples of Nagai Hideyuki’s work on his website and Deviant Art page. Via Visualnews
If you’re a fan of this type of work be sure to also check out the Impressive 3D Pencil Drawings by Fredo.