This paper presents an interactive digital painting system that allows a user to draw graffiti on a virtual 3D canvas with a digital spray can. The system visualizes a stereoscopic representation of the canvas by tracking the user's head. It also emulates real-time spray painting by tracking the spray can in the user's hand as well as sensing the button pressure of the spray device. After painting a 3D object, the user can interact with the object on the display and see it flying in the 3D environment through a tracked head-mounted display. As demonstrated in the results of our evaluation, we verified that the system resembles real graffiti in regard to a natural and realistic graffiti experience.
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