Advanced luminance control and black offset correction for multi-projector display systems

In order to display a homogeneous image using multiple projectors, differences in the projected intensities must be compensated. In this paper, we present novel approaches to combine and extend existing techniques for edge blending and luminance harmonization to achieve a detailed luminance control. Furthermore, we apply techniques for improving the contrast ratio of multi-segmented displays also to the black offset correction. We also present a simple scheme to involve the displayed context in the correction process to dynamically improve the contrast in brighter images. In addition, we present a metric to evaluate the different methods and their influence on the visual quality.

Fast Correction of Tiled Display Systems on Planar Surfaces

A method for fast colour and geometric correction of a tiled display system is presented in this paper. Such kind of displays are a common choice for virtual reality applications and simulators, where a high resolution image is required. They are the cheapest and more flexible alternative for large image generation but they require a precise geometric and colour correction. The purpose of the proposed method is to correct the projection system as fast as possible so in case the system needs to be recalibrated it doesn’t interfere with the normal operation of the simulator or virtual reality application. This technique makes use of a single conventional webcam for both geometric and photometric correction. Some previous assumptions are made, like planar projection surface and negligibleintra-projector colour variation and black-offset levels. If these assumptions hold true, geometric and photometric seamlessness can be achievedfor this kind of display systems. The method described in this paper is scalable for an undefined number of projectors and completely automatic.

A report on electromagnetic radiation surveys of video display terminals /

Mode of access: Internet.

Aviation unit maintenance : control/display subsystem (CDS), NSN 1260-01-165-3959.

Includes index.

Surface display of proteins by Gram-negative bacterial autotransporters

Affiliation: Faculté de Médecine Vétérinaire, Université de Montréal

Studies on electroluminescence using Powder and thin film devices

The subject of electroluminescence has currently acquired great importance because of its potential applications in display systems of a wide variety. A large number of scientists working in commercial, governmental as well as academic institutions all over the world are at present engaged in the intense effort to develop new and efficient phosphor materials and electroluminescent devices. This thesis presents the work carried out by the author in this field during the past few years. The studies discussed in this thesis are mostly confined to the development of some new phosphor materials, their uses in powder and thin film electroluminescent devices and to their electrical and spectral characteristics. Care has been taken to bring' out the physics involved in all the above aspects of the phenomenon

An Evaluation of radiation emission from video display terminals /

Mode of access: Internet.

Design of a display processing unit in a multi-terminal environment.

Photocopy of typescript.

BLAST: a stereoscopic television display,

Vita.

Coefficient generator and cursor for the stereomatrix 3-D display system,

"Supported in part by contract no. Atomic Energy Commission AT(11-1)1469."

Parametric description of a scan-display system,

"COO-1018-1168."

Observer position detector for the stereomatrix 3-D display system.

"Supported in part by Contract no. Atomic Energy Commission AT(11-1) 1469."

Potentiomatrix, a novel display system possessing "innate intelligence."

Vita.

Hardware/software interface for the Stereo-matrix display.

Contract US AEC AT(11-1)1469.