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.

MEIA SYSTEMS: Membrane Encrypted Information Applications Systems

Membrane computing is a recent area that belongs to natural computing. This field works on computational models based on nature's behavior to process the information. Recently, numerous models have been developed and implemented with this purpose. P-systems are the structures which have been defined,developed and implemented to simulate the behavior and the evolution of membrane systems which we find in nature. What we show in this paper is a new model that deals with encrypted information which provides security the membrane systems communication. Moreover we find non deterministic and random applications in nature that are suitable to MEIA systems. The inherent parallelism and non determinism make this applications perfect object to implement MEIA systems.

Noise-tolerance feasibility for restricted-domain Information Retrieval systems

Information Retrieval systems normally have to work with rather heterogeneous sources, such as Web sites or documents from Optical Character Recognition tools. The correct conversion of these sources into flat text files is not a trivial task since noise may easily be introduced as a result of spelling or typeset errors. Interestingly, this is not a great drawback when the size of the corpus is sufficiently large, since redundancy helps to overcome noise problems. However, noise becomes a serious problem in restricted-domain Information Retrieval specially when the corpus is small and has little or no redundancy. This paper devises an approach which adds noise-tolerance to Information Retrieval systems. A set of experiments carried out in the agricultural domain proves the effectiveness of the approach presented.

Konzeption eines selbständig lernenden Information Retrieval Systems, als ein Informationssammel- und Verwaltungsprogramm

[s.c.]

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.

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.

Beacon: a light emitting diode television display.

"Supported in part by contract no. US AEC AT(11-1) 1469."

A display for demonstrating analog computations with random pulse sequences,

"Supported in part by the Office of Naval Research under Contract N000 14-67-A-0305-0007."

Perspective transformer for the stereomatrix 3-D display system.

Vita.

Scantrix: a scanned LED matrix display /

Bibliography: p. 35.