Recently, though a lot of information is generated in various fields, it is difficult for the users to access necessary information easily. In this study, a portable AR projection system that projects the information directly on the object using the portable projector based on the location information and the AR marker was developed. Particularly, this system can represent the three-dimensional...

Beam projector is popularly used for presentation. In order to pay attention to local area of the beam projector display, a laser pointer is used together with a pointing device(Mouse). Simple wireless presenter has limited functions of a pointing device such as “go to next slide” or “back to previous slide” in a specific application(Microsoft PowerPoint) through wireless channel; thus, there i...

Augmenting or annotating physical objects using steerable video projector and camera combinations works well in the range of the projection system. However, since these systems are usually mounted in fixed locations, users have to stay within a certain radius around that location. By using several of these AR-Projection systems, we can make the application roam these systems and thus follow the...

An analysis of moving least squares (m.l.s.) methods for smoothing and interpolating scattered data is presented. In particular, theorems are proved concerning the smoothness of interpolants and the description of m.l.s. processes as projection methods. Some properties of compositions of the m.l.s. projector, with projectors associated with finiteelement schemes, are also considered. The analys...

This paper describes an alternative approach to interpreting the data from a temporarily encoded structured light system. Instead of focusing on the stripes generated in the image by such a sensor, the transitions between stripes are of primary importance. Instead of using substripe interpolation to estimate the projector coordinate at image pixel centres and back-projecting these to 3D points,...

Code minimization provides a speed-up of the processing time of fringe projection based stereo sensors and possibly makes them real-time applicable. This paper reports a methodology which enables such sensors to completely omit Gray code or other additional code. Only a sequence of sinusoidal images is necessary. The code reduction is achieved by involvement of the projection unit into the meas...

In this paper we address the problem of geometric video projector calibration using a markerless planar surface (wall) and a partially calibrated camera. Instead of using control points to infer the camera-wall orientation, we find such relation by efficiently sampling the hemisphere of possible orientations. This process is so fast that even the focal of the camera can be estimated during the ...

This paper describes the implementation of a LCD stripe projection system, based on a new processing scheme called line shift processing. One advantage of the method is, that the projection device can, but is not required to be stable over time nor does it have to be calibrated. The new method therefore allows us to use an off-the-shelf multimedia projector to acquire dense 3-D data (several 10...