We introduce prototype system for interactive exploration of volumetric data using a tangible screen, called ”Volume Slicing Display.” The system tracks the shape and the position of a screen on 3D space using a custom monocular high-speed vision system, then projects the corresponding slice of a 3D virtual object on the screen surface in real time. This experimental interface thus enables user...

graph is a simple, powerful, elegant abstraction with broad applicability in computer science and many related fields. Algorithms that operate on graphs see heavy use in both theoretical and practical contexts. Graphs have a very natural visual representation as nodes and connecting links arranged in space. Seeing this structure explicitly can aid tasks in many domains. Many people automaticall...

In order to describe and transmit the entire visual data of a 3-D space, the authors have proposed the concept of the “3-D Space Coding.” We applied a DCT-based method to the data space in which light ray data was recorded. Our method could compress light ray data more effectively than the video coding method like MPEG2. This paper discusses the “3-D Space Coding” using the structural propertie...

Learning can be increasingly untethered to home, work or school spaces by means of integrative cloud services coupled with 3D worlds, and mobile, collaboratively driven use of digital “third space.” A 3-space, portable and modular design is described and demonstrated for use in administering and supporting learning in 3D. 3-space environments can be designed for enabling multi-purpose, multifun...

We describe fast voxel coloring using programmable 3D graphics hardware based on texture mapping capabilities of modern graphics accelerators. In contrast to previous approaches, where graphics hardware is only partially employed to speed up voxel coloring, our implementation performs the reconstruction procedure entirely on the graphics processing unit. Therefore, any expensive transfer of dat...

Fixation is defined as the ability of an active visual system to keep the projection of an environmental point stationary in the image. We show in this paper that fixation enables the decoupling of the 3D-motion parameters by projecting appropriately the spherical motion field in two latitudinal directions with respect to two different poles of the image sphere. Both computational steps are bas...

Metamaterials displaying negative refractive index has remarkable potential to facilitate the manipulation of incident waves for wide variety of applications such as cloaking, superlensing and the like. Space-coiling approach is a recently explored technique to achieve extreme properties. The space coiling phenomena cause less energy absorption as compared to local resonating phenomena for obta...

Reconstruction based on the stereo camera has received considerable attention recently, but two particular challenges still remain. The first concerns the need to aggregate similar pixels in an effective approach, and the second is to maintain as much of the available information as possible while ensuring sufficient accuracy. To overcome these issues, we propose a new 3D representation method,...

The 3D Tractus (Latin for drawing, space and movement) is a simple and inexpensive physical interface for intuitive and direct exploration, manipulation and inputting of three-dimensional (3D) data. The interface is a straightforward evolution of the non-computerized drawing board, preserving the drawing board physical spatial affordances and enhancing it by allowing the interactive planar surf...

Visualization of high-dimensional data requires a mapping to a visual space. Whenever the goal is to preserve similarity relations a frequent strategy is to use 2D projections, which afford intuitive interactive exploration, e.g., by users locating and selecting groups and gradually drilling down to individual objects. In this paper, we propose a framework for projecting high-dimensional data t...