TYLER M. JOHNSON: A Cooperative Approach to Continuous Calibration in Multi-Projector Displays (Under the direction of Henry Fuchs) Projection-based displays are often used to create large, immersive environments for virtual reality (VR), simulation, and training. These displays have become increasingly widespread due to the decreasing cost of projectors and advances in calibration and renderin...

Standard presentation systems consisting of a laptop connected to a projector suffer from two problems: (1) the projected image appears distorted (keystoned) unless the projector is precisely aligned to the projection screen; (2) the speaker is forced to interact with the computer rather than the audience. This paper shows how the addition of an uncalibrated camera, aimed at the screen, solves ...

In this technical report, we present a detailed overview of PixelFlex, a multi-projector display system that combines multiple roughly aligned projectors into a unified highresolution display. We describe the current prototype, the automated calibration process, and two rendering algorithms that support interactive applications. The first rendering algorithm is a one-pass technique that assumes...

Some of the important technical characteristics of photogrammetric system are the speed of 3D acquisition, automation and possibility for smart operating. Using structured and coded light allows to solve correspondence problem fast, robustly and accurate. And applying of PC-controlled structured light provides a possibility to make a step to highly automated and intellectual photogrammetric sys...

This paper describes the current design characteristics and performance capabilities of the US Army Missile Command's (USAMICOM's) diode laser based infrared scene projector technology. The projector is now operational at the US Army Missile Command's Research, Development, and Engineering Center (RDEC) and is being integrated into several HWIL simulation facilities. The projector is based upon...

I propose a scheme for reconstructing the weak value of an observable without the need for weak measurements. The post-selection in weak measurements is replaced by an initial projector measurement. The observable can be measured using any form of interaction, including projective measurements. The reconstruction is effected by measuring the change in the expectation value of the observable due...

Previous user studies have suggested the occurrence of symptoms of motion or simulator sickness among active spectators of handheld projector interaction. Using the well-established Simulator Sickness Questionnaire proposed by Kennedy et al. in 1993, we asked twenty-six participants if they had any indication of such symptoms after they watched a demonstration of handheld projector interaction ...

When a person stands between a projector and a display surface a shadow occurs. We show a method to perform shadow removal using camera-based object tracking and a three-dimensional model of a room, which includes cameras, projectors, and flat surfaces. For tracking people, although we use cameras, other methods would work. To obtain the model, we adapted and use existing geometric calibration ...

This paper describes the use of computer vision to support the operation of a handheld projector, and describes four applications. Projectors in the past have been used as fixed devices, but the latest generation of ’pocket projectors’ is small and portable. We demonstrate the feasibility of using a projector held in the hand, and the types of applications that can be done with a handheld proje...