3D fog display using parallel linear motion platforms

Lam, Miu Ling; Chen, Bin; Lam, Kit-Yung; Huang, Yaozhun

doi:10.1109/vsmm.2014.7136689

Cited by 8 publications

(13 citation statements)

References 11 publications

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“…SonicSpray could also work as an excellent complement to other aerosol control approaches and form factors, such as those by Lam et al [12,13,11]). For instance, by mounting Sonic Spray around the array of emitters [13,11] or on the mechanically moving emitters [12] (see Figure 10(d)), the moving emitters could be used to provide a wider display and large horizontal displacements and our technique could be used to enable further mid-air control (steer in XY plane, as fog raises).…”

Section: Discussionmentioning

confidence: 99%

“…The most prominent technique is FogScreens [26,27], which uses fans to create a laminar flow but results in permeable displays constrained to a flat form factor. Works in [13,11] showed a volumetric mid-air display by using a 2D array of static fog nozzles, or nozzles being mechanically actuated [12], to adjust the depth of parts of the display. This concept was extended to a larger form-factor by MistForm [35], combining mechanical actuators and fog nozzles mounted on a flexible PVC pipe, achieving an adaptive shape-changing display fog screen.…”

Section: Permeable Mid-air Displaysmentioning

confidence: 99%

“…We leverage these benefits for our technique, enabling the creation of novel mid-air displays, which we explore in the paper. Our technique can also be combined with other existing techniques (e.g., [27,34,29,12]) to enable further form factors.…”

Section: Introductionmentioning

confidence: 99%

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SonicSpray: A Technique to Reconfigure Permeable Mid-Air Displays

Norasikin

Martinez-Plasencia

Memoli

et al. 2019

Proceedings of the 2019 ACM International Conference on Interactive Surfaces and Spaces

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Figure 1. Applications enabled by SonicSpray: (a) SonicSpray is visualising a graphical clock in mid-air by laterally oscillating its narrow mist, (b) game of whack a mole, (c) projection of butterfly that is moving in 3D spatial space, (d) a visual of a person in a video call application. ABSTRACTPermeable, mid-air displays, such as those using fog or water mist are limited by our ability to shape and control the aerosol and deal with two major issues: (1) the size and complexity of the system, and (2) the creation of laminar flow, to retain display quality. Here we present SonicSpray, a technique using ultrasonic Bessel beams to create reconfigurable mid-air displays. We build a prototype from low-cost, off-the-shelf parts. We explore the potential and limitations of SonicSpray to create and redirect laminar flows of fog. We demonstrate a working prototype that precisely controls laminar aerosols through only 6x6 ultrasound transducers array. We describe the implementation steps to build the device, verify the control and projection algorithm for the display, and evaluate its performance. We finally report our exploration of several useful applications, in learning, entertainment and arts.

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Section: Discussionmentioning

confidence: 99%

Section: Permeable Mid-air Displaysmentioning

confidence: 99%

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SonicSpray: A Technique to Reconfigure Permeable Mid-Air Displays

Norasikin

Martinez-Plasencia

Memoli

et al. 2019

Proceedings of the 2019 ACM International Conference on Interactive Surfaces and Spaces

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“…As per mid-air permeable systems, Sahoo et al [38] use charged fog constrained between transparent electrodes to create a small shape changing display surface, at the expense of user's reachability. Lam et al [17] described a two-dimensional array of small, flat fog emitters which can create small fog displays at discrete positions across a tabletop, but continuity of the screen can only be ensured across display elements in the same line. A second approach by Lam et al [18] mounted fog emitters on moving guides, allowing for continuous displacement, but not for continuity across the display.…”

Section: Shape Changing Displaysmentioning

confidence: 99%

MistForm

Tokuda

Norasikin

Subramanian

et al. 2017

Proceedings of the 2017 CHI Conference on Human Factors in Computing Systems

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Figure 1. (A) MistForm is a shape-changing fog screen, enabling single user and two user interaction (B) with 2D or 3D content. (C) We describe a computational approach and projection algorithm which work together to minimize artifacts (shape distortion and uneven brightness) related to projecting on a shape changing fog display (note parallel edges and brightness in the checkerboard). ABSTRACTWe present MistForm, a shape changing fog display that can support one or two users interacting with either 2D or 3D content. Mistform combines affordances from both shape changing interfaces and mid-air displays. For example, a concave display can maintain content in comfortable reach for a single user, while a convex shape can support several users engaged on individual tasks. MistForm also enables unique interaction possibilities by exploiting the synergies between shape changing interfaces and mid-air fog displays. For instance, moving the screen will affect the brightness and blurriness of the screen at specific locations around the display, creating spaces with similar (collaboration) or different visibility (personalized content). We describe the design of MistForm and analyse its inherent challenges, such as image distortion and uneven brightness on dynamic curved surfaces. We provide a machine learning approach to characterize the shape of the screen and a rendering algorithm to remove aberrations. We finally explore novel interactive possibilities and reflect on their potential and limitations.

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“…The reflected light beams were intersecting and being scattered in fog to construct a bright spot. We have recently developed a volumetric fog display that exploits spatial projection mapping technique on a non-planar, reconfigurable fog screen to display volumetric data in real 3D space [12]. Our 3D fog display is composed of a set of linear motion platforms which carry some fog emitter modules, and a calibrated projector which projects video that is synchronized with the dynamic configuration of the fog screen.…”

Section: Introductionmentioning

confidence: 99%

Virtual 3D perception in a fog projection installation

Lam

2014

2014 International Conference on Virtual Systems &Amp; Multimedia (VSMM)

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This paper presents a fog projection installation, entitled Dance in the Mist, that studies human visual experience and how depth perception is constructed. It resembles the Spinning Dancer -a famous bistable optical illusion published online a decade ago. A female dancer is perceived to be spinning clockwise or anti-clockwise by different observers, and some may even see the figure suddenly spins in the opposite direction. In the installation, an immaterial screen is created by a cloud of fog that is flowing continuously from a fog machine and rising up in the air. The dancer's silhouette is projected on the mist and appears to be suspending and spinning in mid-air. Based on the Mie scattering model, the animated image can be observed most clearly at the frontal position (forward direction to incident radiation. As the image casts on a column of fog rather than a flat screen, the light rays are scattered at different depth positions in the fog. This gives rise to image thickness and depth that creates a virtual 3D effect. The translucent appearance of the image also contributes to the holographic depth sensation. Most importantly, the bistable property of the optical illusion preserves in the virtual 3D display. That is, observer would see the dancer appearing to be 3D and spinning in the space in either clockwise or anti-clockwise direction. This installation ingeniously and playfully exploits the interplay between illusion (lack of visual cues for depth) and augmented depth perception to create a new visual experience for audience.

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3D fog display using parallel linear motion platforms

Cited by 8 publications

References 11 publications

SonicSpray: A Technique to Reconfigure Permeable Mid-Air Displays

SonicSpray: A Technique to Reconfigure Permeable Mid-Air Displays

MistForm

Virtual 3D perception in a fog projection installation

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