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Subpixel rendering

About: Subpixel rendering is a research topic. Over the lifetime, 3885 publications have been published within this topic receiving 82789 citations.


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Patent
Rob Rumbaugh1
04 May 1998
TL;DR: A flat panel display device includes a cathode (58) in parallel opposed position to and vertically separated from an anode (56), where red, green, and blue subpixels are sequentially arrayed on the anode as mentioned in this paper.
Abstract: A flat panel display device includes a cathode (58) in parallel opposed position to and vertically separated from an anode (56). Red (46), green (44), and blue (42) subpixels are sequentially arrayed on the anode (56). Electron emitter subpixels (50, 52, 54) are arrayed on the cathode (58) in paired relationship to the red, green, and blue subpixels (46, 44, 42) located on the anode (56). To provide enhanced color performance, the surface area of the blue subpixel (42) is greater than the surface area of either the green subpixel (44) or the red subpixel (46). Additionally, the red subpixel (46) is horizontally shifted toward the green subpixel (44) and away from the blue subpixel (42).

27 citations

Proceedings ArticleDOI
27 Dec 2004
TL;DR: A hybrid detector based on both AMSD and FCLS was developed to take advantage of each detector's strengths, demonstrating that the hybrid detector achieved the lowest false alarm rates while also producing meaningful abundance estimates.
Abstract: Numerous subpixel detection algorithms utilizing structured backgrounds have been developed over the past few years. These range from detection schemes based on spectral unmixing to generalized likelihood ratio tests. Spectral unmixing algorithms such as the Fully Constrained Least Squares (FCLS) algorithm have the advantage of physically modeling the interactions of spectral signatures based on reflectance/emittance spectroscopy. Generalized likelihood ratio tests like the Adaptive Matched Subspace Detector (AMSD) have the advantage of identifying targets that are statistically different from the background. Therefore, a hybrid detector based on both AMSD and FCLS was developed to take advantage of each detector's strengths. Results demonstrate that the hybrid detector achieved the lowest false alarm rates while also producing meaningful abundance estimates

27 citations

Patent
31 Jul 2013
TL;DR: In this article, a liquid crystal display screen, a display device and a quantum dot layer graphical method are described, where a plurality of pixel units are arranged in a liquid-crystal panel, and each pixel unit comprises a plethora of subpixel units capable of displaying different colors.
Abstract: The invention discloses a liquid crystal display screen, a display device and a quantum dot layer graphical method. A plurality of pixel units are arranged in a liquid crystal panel; each pixel unit comprises a plurality of subpixel units capable of displaying different colors; and a monochromatic quantum dot layer is arranged at the position corresponding to at least one color of subpixel unit of each pixel unit. The embodiment of the invention substitutes the quantum dot layer for the conventional resin to serve as a color filter for converting background light into monochromatic light, the emission spectrum of the quantum dots is narrow and the luminous efficiency is high, and the background light can be efficiently converted into monochromic light, so the color gamut of the liquid crystal display screen can be improved, the color saturation is enhanced and the display quality of the display screen is improved. The monochromic quantum dots are dispersed by a high-molecular polymer network, so accumulation of the quantum dots can be avoided, the quantum yield is increased, the quantum excited lighting effect can be improved, contact of the monochromic quantum dots and oxygen can be avoided, and the service life of the quantum dots is prolonged.

27 citations

Journal ArticleDOI
TL;DR: In this article, a spectral mixture analysis approach and a low probability detection routine based on orthogonal subspace projection were used to detect two different volcanic tuff units, one basaltic and one rhyolitic, in two different scenes of data measured by the airborne visible/infrared imaging spectrometer (AVIRIS).
Abstract: High spectral resolution imagery produced by imaging spectrometers enables the discrimination of geologic materials whose surface expression is subpixel in scale. Moreover, the use of such data makes it possible to distinguish materials which are characterized only by subtle differences in the spectral continuum. We define the “continuum” as the reflectance or radiance spanning the space between spectral features. The capability to distinguish subpixel targets will prove invaluable in studies of the geology of the Earth and planets from airborne and spaceborne imaging spectrometers. However, subpixel targets can only be uniquely identified in a truly optimal sense through the application of data reduction techniques that model the spectral contribution of both target and background materials. Two such techniques are utilized herein. They are a spectral mixture analysis approach and a low probability detection routine based on orthogonal subspace projection. These techniques were applied to the problem of detecting two different volcanic tuff units, one basaltic and one rhyolitic, in two different scenes of data measured by the airborne visible/infrared imaging spectrometer (AVIRIS). These tuff units have limited exposures from an overhead perspective and have spectral signatures which differ from those of background materials only in terms of subtle slope changes in the reflectance continuum. Of the two approaches, it was found that the low probability detection algorithm was more effective in highlighting those pixels that contained the target tuff units while suppressing the response of undesired background materials.

27 citations

Patent
31 Jul 1995
TL;DR: In this paper, a grey level value representing a pixel is interpolated to generate subpixel grey level values which correspond to a second resolution, and a threshold circuit thresholds the interpolated grey-level value.
Abstract: A method and system implements a high addressability characteristic into an error diffusion process. A grey level value representing a pixel is received. The grey level value is interpolated to generate subpixel grey level values which correspond to a second resolution. A threshold circuit thresholds the interpolated grey level value. In parallel to the interpolation circuit and threshold circuit is an error circuit which generates a plurality of possible error values. One of the plurality of possible error values is selected based on the number of subpixels exceeding a threshold value. A portion of the selected error value is then diffused to adjacent pixels on a next scanline.

27 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202387
2022209
2021120
2020179
2019189
2018263