MobiSpray

Abstract

a B S T r a c T This paper presents MobiSpray, a novel interactive art tool for creating ubiquitous ephemeral digital art. The mobile phone is employed as a virtual spray can to spray dabs of digital paint onto the physical environment via large-scale projections. The gesture-based control of the mobile phone provides a natural pointing mechanism for the virtual spray can. experiences from extensive field use around the world testify in favor of a successful design. Most importantly, MobiSpray liberates and empowers the artist to change the environment via large-scale artistic expressions. introductionThis work stems from our desire to change, through digital art, the appearance of the physical environment to something different, unexpected, and unpredictable, but without inflicting any permanent or illicit damage. To achieve this, we developed the MobiSpray art tool for imposing large-scale ephemeral digital artistic projections on the environment. They serve as a vehicle for experiencing space and time in new ways, drawing inspiration from both the artistic process itself and the final artistic outcome. Figure 1. MobiSpray in action.

Digital Facial Augmentation for Interactive Entertainment

“…Spatial augmented reality often involves real-time object tracking and projection of "spatially aware" contents onto a tabletop or wall surface [3]. Extending this approach as a public installation, MobiSpray employs interactive components for artistic effect, transforming a smartphone into a virtual spray can to draw on building facades or monuments [4]. Similar effects have been achieved in accurately mapping video contents onto a human body or face, using depth cameras or motion capture systems for face tracking [1], [2].…”

“…MobiSpray [4], noted above, couples projection mapping with user interaction, allowing users to optically paint building facades by projection controlled by smartphones. Facial recognition [14] by a video camera combined with a Kinect was used to track the performer's face in order to support facial projection mapping, with unrestricted motion, in Bell's music video "Chase No Face" [1].…”

Performative technologies for heritage site regeneration

“…In recent years, the projector has emerged as a piece of apparatus that is used fairly often, both indoors and outdoors for museums, art installations and exhibits [23,5,37,22,36,15]. Bert Bongers was one of the first to realise the potential of taking a projector outside of its intended context [5].…”

“…Before the introduction of pico projectors, Bongers took to the streets at night with a full sized projector to project gateways to alternate realities. Over time, situated projections have become more interactive, with certain examples allowing users to control the content that is projected by external means [37,22]. In L.A.S.E.R.…”

Co-creating a digital 3D city with children

“…In the area of media facades, prior art has demonstrated creating giant (illusionary) paintings over the walls of the building in a physical city [7]. Photographs have been used to create digital presentations of the urban landscape either by constructing contemporary, collective collages [1], or by providing the user a snapshot of the local history through an old photograph which is aligned with the modern landscape [4].…”