Subpixel rendering

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

Pixel structure and manufacture method thereof

Abstract: The invention provides a pixel structure and manufacture method thereof The pixel structure comprises a substrate and pixel units on the substrate Each of the pixel unit comprises a pixel circuit structural layer, a pixel definition layer, a pixel electrode, inorganic LED subpixel and a first OLED subpixel The pixle circuit structural layer is formed on the surface of the substrate; the pixel definition layer is formed on the pixel circuit structural layer and has a first opening and a second opening; the pixel electrode is disposed in the first and second openings and electrically connected with the pixle circuit structural layer; the inorganic LED subpixel comprises an ahesion layer, a first semiconductor layer, a second semiconductor layer; the first OLED subpixel comprises a first transmission layer and a second transmission layer; beam emitted by the inorganic LED subpixel has a different color from that of beam emitted by the first OLED subpixel The pixel structure can solve problems that blue light OLED subpixel has a relatively low luminous efficiency, and that red light OLED has a relatively low luminous efficiency after miniaturation

Intensified CCDs as position sensitive neutron detectors

Abstract: We present a detector with high spatial resolution that uses an intensified CCD to observe the light output of a thin scintillator, which can be chosen to be sensitive either to neutrons or X-rays. The CCD is read out at high pixel rates and the resulting video signal is analyzed in real-time to obtain the coordinates of the centers of the scintillation events. A fast centroiding algorithm based on digital signal processing techniques results in a resolution of 60 μm. More sophisticated algorithms have been tested to yield subpixel resolution (40μm). Count rates of about 50 000 neutrons per second on a sensitive area of 25 mm diameter have been achieved.

A machine learning approach to hyperspectral detection of solid targets

Abstract: We describe and compare two approaches to solid subpixel target detection in hyperspectral imagery. The first approach requires explicit models for both the target and the background, and employs a generalized likelihood ratio in order to obtain a detector that is optimized to those specific models. When this approach is most successful, a closed-form solution is obtained that permits the detector to be efficiently applied. A specific example of this approach is outlined in some detail, leading to the elliptically-contoured finite-target matched filter (EC-FTMF), a variant of the classical FTMF algorithm that uses a multivariate t -distribution instead of a Gaussian as the model for the background. The second approach also requires an explicit model of the target, but does not need a model for the background. In this second approach, matched pairs of data samples are created: for each pixel in the original hyperspectral image, a corresponding pixel is generated by implanting the target into the original pixel. These matched pairs are used as training data for a machine learning algorithm to classify pixels as either non-target or target. Here we use a support vector machine, but the matched pair machine learning (MPML) framework does not restrict the choice of classifier type. Detectors using both approaches are applied both to simulated data (with Gaussian and with multivariate fit distributed backgrounds) and to real hyperspectral data with known, referenced targets.

The effects of subpixel addressing on users' performance and preferences during reading-related tasks

Abstract: Subpixel addressing is a font-rendering technology that triples the apparent horizontal resolution of liquid crystal displays. Four experiments measured the effects of subpixel addressing (Microsoft's ClearType) relative to standard (aliased) font-rendering techniques. Participants preferred, and gave higher readability ratings to, text that had been rendered using subpixel addressing. Subpixel addressing also significantly improved the accuracy of lexical decisions and the accuracy and speed of sentence comprehension. Subpixel addressing did not affect word-naming performance or reading speed during pleasure reading. Taken together, these findings suggest that subpixel addressing provides substantial benefits to users while adding no costs to display hardware.

Liquid crystal display having predetermined steepness of light transmittance within a predetermined range on light transmittance gradient for improved visibility

Abstract: A liquid crystal display is provided, which includes: a first panel including a first signal line, a second signal line intersecting the first signal line, a thin film transistor connected to the first and the second signal lines, and a pixel electrode connected to the thin film transistor and including a first subpixel electrode having a first voltage and a second subpixel electrode capacitively coupled to the first subpixel electrode and having a second voltage; a second panel including a common electrode facing the pixel electrode and supplied with a common voltage; and a vertically aligned liquid crystal layer that is interposed between the pixel electrode and the common electrode, wherein a steepness of light transmittance as function of a voltage applied the first subpixel electrode with respect to the common voltage is lower than about 20.