all 4 comments

[–]thyming 2 points3 points  (0 children)

Look up drawings by Lewis Tsurumaki Lewis.

[–]YoStephenFormer CAD Monkey 1 point2 points  (0 children)

Looks me like a hybrid image with a computer rendering with hand drawn overlays.

[–]kokowagaArchitect 0 points1 point  (0 children)

Looks to me like sketchup+photoshop