Tomographic projector

On the crucial impact of the coupling projector-backprojector in iterative tomographic reconstruction

The performance of an iterative reconstruction algorithm for X-ray tomography is strongly determined by the features of the used forward and backprojector. For this reason, a large number of studies has focused on the to design of projectors with increasingly higher accuracy and speed. To what extent the accuracy of an iterative algorithm is affected by the mathematical affinity and the similar...

A Self-Correcting Projector

We describe a calibration and rendering technique for a projector that can render rectangular images under keystoned position. The projector utilizes a rigidly attached camera to form a stereo pair. We describe a very easy to use technique for calibration of the projector-camera pair using only black planar surfaces. We present an efficient rendering method to pre-warp images so that they appea...

Virtual Document Projector Camera

This paper describes techniques for the design of a system able to interact with the user by visual recognition of hand gestures. The system is composed of three modules including tracking, posture classii-cation and gesture recognition. A description of each module is given. In order to increase the robustness and the precision of the tracking, several complementary tracking processes are coup...

Handheld Projector Interaction

Smart Laser Projector

The Smart Laser Projector (SLP) is a laser-based projector that displays images while, at the same time, functioning as a LIDAR probe that gathers information about the projection surface: shape, position, orientation, texture, and spectral reflectance. This approach has several important advantages for implementing spatially augmented reality. For example, it does not require projector-camera ...