3D motion tracking is a critical task in many computer vision applications. Unsupervised markerless 3D motion tracking systems determine the most relevant object in the screen and then track it by continuously estimating its projection features (center and area) from the edge image and a point inside the relevant object projection (namely, inner point), until the tracking fails. Existing reliab...

The Drosophila larval optic nerve, called Bolwig's nerve (BN), projects into the central brain along a simple invariant path. The growth of the BN proceeds in three phases, during which the nerve changes direction at two intermediate targets, P1 and P2. Here we show that the projection of the BN is amenable to genetic dissection. In a mutagenesis screen, we have isolated mutations in 13 genes t...

1Advanced Computing Research Centre, University of South Australia, Mawson Lakes, South Australia 5095 {Phillip Lock. [email protected]} Abstract. Game playing in immersive projection environments such as caves and domes is assumed to offer an enhanced experience but there is little quantitative research that measures this. This paper reports on a study of user performance statistics wh...

How to obtain higher brightness with a small volume projection engine for 4K resolution digital light processing (DLP) is of great significance. In this paper, we first use the fourth channel serving as blue pump leading 52% gain green brightness. Secondly, new inline total internal reflection prism glued spherical mirror constructed notably reduce length relay illumination system by more than ...

A projector can support a large-screen display at a lower cost than a television which is currently the most useful home entertainment device. Because most families live in small spaces, they cannot easily make full use of the benefits of projectors. This work solves the problem of projecting the largest possible display image in a small space, without limiting the projective distance or area. ...

It has been a common problem in optical see-through head-mounted displays that the displayed image lacks brightness and contrast compared with the direct view of a real-world scene. This problem is aggravated in head-mounted projection displays in which multiple beam splitting and low retroreflectance of a typical retroreflective projection screen yield low luminous transfer efficiency. To addr...

Omni-directional locomotion systems are yet of little advantage in virtual environments (VEs) with limited large display system, where users may experience visualless situations when they move in a direction that is not covered by the large screen. This paper presents a new omni-directional locomotion interface based on step-inplace movement and a smart-turntable system to impart users with the...

Visual display systems using fixed screens, including Immersive Projection Technology (IPT) displays, have a merit that they can provide a stable world against the user’s head motion. In spite of this merit, such display systems have not been used for “telexistence in real worlds”, which requires accurate stereoscopic view of live video image. We have proposed a method to realize a lived-video-...

Emerging phone handsets include embedded projectors that will provide a widespread new form of display for mobile users. However, it is not clear how the handheld projector will be used alongside the existing phone screen. The current approach of many manufacturers is to place the projector in the top of the phone. This typically prevents users from simultaneously interacting with the phone and...

The Interactive Learning Wall is a Windows/PC-based virtual blackboard system that can be controlled remotely by a classroom instructor and/or students. A laser pointer used by the instructor emulates mouse actions on a computer projection screen. An inexpensive video camera sends each projected frame to a video capture card in the computer; our software detects the bright laser spot, moves a s...