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Author: National information display lab princeton nj Publisher: ISBN: Category : Languages : en Pages : 61
Book Description
This report presents a survey of the performance of twenty color CRT monitors. All have addressability of either 1600 x 1280 or 1600 x 1200 pixels, and image sizes from 20 to 21 inches. The report provides: Comparisons of the performance of the twenty monitors, A two page summary of the performance of each of the twenty monitors. The results are given in a standardized graphical format. The purpose of the report is to provide an overview of the performance of these monitors. To do that, we have concentrated on the most important monitor parameters, providing the reader with information that will allow a rapid and timely review. These parameters are: Luminance (brightness) Resolution (measured and interpreted in several ways), Convergence ; Waviness (distortion). In color monitors, the desired image can beat with the phosphor dots or stripes leading to a disturbing pattern of wavy bars called Mofre'. Mofre' is difficult to quantify; it is very apparent to the eye in some images, but not in others. In this report we refer to Mofre' only in the Comments sections of the individual monitor reports in the following section.
Author: National information display lab princeton nj Publisher: ISBN: Category : Languages : en Pages : 61
Book Description
This report presents a survey of the performance of twenty color CRT monitors. All have addressability of either 1600 x 1280 or 1600 x 1200 pixels, and image sizes from 20 to 21 inches. The report provides: Comparisons of the performance of the twenty monitors, A two page summary of the performance of each of the twenty monitors. The results are given in a standardized graphical format. The purpose of the report is to provide an overview of the performance of these monitors. To do that, we have concentrated on the most important monitor parameters, providing the reader with information that will allow a rapid and timely review. These parameters are: Luminance (brightness) Resolution (measured and interpreted in several ways), Convergence ; Waviness (distortion). In color monitors, the desired image can beat with the phosphor dots or stripes leading to a disturbing pattern of wavy bars called Mofre'. Mofre' is difficult to quantify; it is very apparent to the eye in some images, but not in others. In this report we refer to Mofre' only in the Comments sections of the individual monitor reports in the following section.
Author: Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
This report presents a survey of the performance of twelve color CRT monitors. All have addressability of either 1600 x 1280 or 1600 x 1200 pixels, and CRT sizes from 20 to 21 inches in diagonal (actual image sizes are smaller). The report provides: Comparisons of the performance of the twelve monitors A two page summary of the performance of each of the twelve monitors The results are given in a standardized graphical format. The purpose of the report is to provide an overview of the performance of these monitors. To do that, we have concentrated on the most important monitor parameters, providing the reader with information that will allow a rapid and timely review. These parameters are: Luminance (brightness) Resolution (measured and interpreted in several ways) Convergence Waviness (distortion) Moire' (only in the Comments sections of the individual monitor reports) NIDL evaluated and compared the following monitors: Computer Display Solutions CDS-2 111, Conrac MARS 9321, Art Media TN-2185T, Comerstone Color 21/88ft, Daytek DT-2102M, Hyundai DeluxScan 21, IBM P201, Image Systems C2lLMAX).
Author: Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
Measurements of the performance of five, high-brightness, monochrome, 21-inch viewing diagonal, portrait, CRT monitors with addressability of 2,048 x 2,560 pixels have been conducted, analyzed, and reported in accordance with consistent metrological practices developed by the NIDL. In terms of two performance metrics, the number of "resolvable pixels on grayscale imagery" and peak luminance, the monitors range in performance from 2.9 to 5.2 million pixels and from 240 candelas per square meter (70 footLamberts) to 514 cd/m2 (150fL). Although each monitor can address 2,048 x 2,560 pixels, each monitor achieves a different number of resolvable pixels because of differences in the size of the scanned electron beam spot at the phosphor screen. Measurements of the spot shape and size were conducted and plotted on the same scale to facilitate comparison. The range in peak luminance arises from the range in transmission of the CRT faceplate glass (30% to 50%), the efficiency of the phosphor screen, and the peak beam current the CRT and monitor circuitry were specified to operate at. Given a number of monitors all matched in peak brightness, those with low faceplate glass transmission are expected to provide visibly-higher contrast in brightly-lit viewing environments and, therefore, to better enable people to detect low-brightness, low-contrast detail in images. Given a number of monitors of the same peak brightness and transmission and under the same ambient lighting, those with a larger number of resolved pixels will provide a sharper looking image that better enables detection of detail. Given a number of monitors with the same transmission and resolvable number of pixels and under the same ambient lighting conditions, those with higher peak luminance and, therefore, higher dynamic range, are expected to better enable the detection of low-brightness, low-contrast pixels or small clusters of pixels in an image.
Author: Heino Widdel Publisher: Springer Science & Business Media ISBN: 1475797540 Category : Computers Languages : en Pages : 335
Book Description
This book is the product of Research Study Group (RSG) 13 on "Human Engineering Evaluation on the Use of Colour in Electronic Displays," of Panel 8, "Defence Applications of Human and Biomedical Sciences," of the NATO Defence Research Group. RSG 13 was chaired by Heino Widdel (Germany) and consisted of Jeffrey Grossman (United States), Jean-Pierre Menu (France), Giampaolo Noja (Italy, point of contact), David Post (United States), and Jan Walraven (Netherlands). Initially, Christopher Gibson (United Kingdom) and Sharon McFaddon (Canada) participated also. Most of these representatives served previously on the NATO program committee that produced Proceedings of a Workshop on Colour Coded vs. Monochrome Displays (edited by Christopher Gibson and published by the Royal Aircraft Establishment, Farnborough, England) in 1984. RSG 13 can be regarded as a descendent of that program committee. RSG 13 was formed in 1987 for the purpose of developing and distributing guidance regarding the use of color on electronic displays. During our first meeting, we discussed the fact that, although there is a tremendous amount of information available concerning color vision, color perception, colorimetry, and color displays-much of it relevant to display design-it is scattered across numerous texts, journals, conference proceedings, and technical reports. We decided that we could fulfill the RSG's purpose best by producing a book that consolidates and summarizes this information, emphasizing those aspects that are most applicable to display design.
Author: L. D. Silverstein Publisher: ISBN: Category : Languages : en Pages : 329
Book Description
A great number of complex, interacting factors determine the effectiveness of a color display system. Many of these factors characterize visual displays in general, while others are specifically related to the production of use of color. Because it is difficult, if not unwise, to isolate and consider human visual and perceptual factors separately from color display system hardware characteristics, both operator and display system requirements must be analyzed according to common functional units. The objectives of the study were to review the current philosophy and standards on the airborne applications of electronic color display systems, develop guidelines for specifying and measuring color CRT display performance parameters, conduct a survey of currently available color systems, review and evaluate existing system capabilities, and predict future trends and applications in color display systems and componentry. Keywords: Color displays; Visual displays; Display perceptual considerations; Aircraft displays; Display systems; Color display specifications; Crew alerting; CRT displays; Human factors; Alerting systems; Electronic displays.
Author: Publisher: ISBN: Category : Aeronautics Languages : en Pages : 610
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: Publisher: ISBN: Category : Languages : en Pages : 16
Book Description
Three experiments were performed to evaluate methods for predicting the luminances and chromaticity coordinates produced by color CRT monitors, given known inputs. Linear and logarithmic versions of PLCC and PLVC, plus Berns, Motta, and Gorzynski's power function, were tested. Estimates are provided for the number of CRT measurement points needed to maximize each method's predictive accuracy. Correcting for unintended light from the monitor is shown to improve accuracy substantially for a case involving a seemingly small amount of light. Berns et. al.'s characterization technique, which involves measuring the monitor's neutral point, is shown to yield the same accuracy as conventional characterization while reducing the number of measurements required, and to yield improved accuracy when correction for unintended light is needed but impractical. The accuracies of the predictive methods are compared and recommendations for their use are provided.
Author: Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
The goal of this document is to provide practical, tested procedures for obtaining and reporting consistent and repeatable performance measurements of color CRT displays, especially those used in imagery analysis. The reported results of these measurements can be used to determine whether a candidate display can meet the needs of Image Analysts and other critical users, such as radiologists in the medical imaging community. This document enables users to easily make an objective comparison when choosing between candidate displays. The goal is not to reinvent, but to identify, incorporate, and revise as appropriate, measurement standards that other standards generating bodies have established. The establishment of such measurement and reporting standards, and promotion of their use, will provide a common language by which display users can communicate their needs to display manufacturers, better enabling the manufacturers to recognize the critical performance criteria which must be met in order to successfully provide increasingly higher quality, more cost effective color CRT displays to the user.
Author: P. Bodrogi Publisher: John Wiley & Sons ISBN: 3527650741 Category : Technology & Engineering Languages : en Pages : 403
Book Description
This much needed, comprehensive and modern reference on display technology, illumination sources and color imaging focuses on visual effects and how reproduced images are best matched to human visual features. As such, it teaches readers how to exploit the knowledge of human color information processing to design usable, ergonomic, and pleasing displays or visual environments. The contents describe design principles and methods to optimize self-luminous visual technologies for the human user, including modern still and motion image displays, and indoor light sources. Design principles and methods are derived from the knowledge of the human visual system, with a special emphasis on color vision, color cognition, color harmony, color preference and visually evoked emotions. The expert authors include the most important and latest applications of the design principles and methods, forming a comprehensive view of human color information processing from the receptors through the retina via high-level visual perception right up to the level of cognition, preference, harmony, as well as visually evoked emotions. This book is included in the Wiley SID Series.
Author: National information display lab princeton nj
Author: National information display lab princeton nj
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Author: Heino Widdel
Author: L. D. Silverstein
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Author: P. Bodrogi