Subpixel rendering

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

Display apparatus and electronic apparatus

Abstract: Disclosed herein is a display apparatus, including: a plurality of subpixels disposed adjacent each other and forming one pixel which forms a unit for formation of a color image; the plurality of subpixels including a first subpixel which emits light of the shortest wavelength and a second subpixel disposed adjacent the first subpixel; the second subpixel having a light blocking member disposed between the second subpixel and the first subpixel and having a width greater than a channel length or a channel width of a transistor which forms the second subpixel.

Aliasing reduction in staring infrared imagers utilizing subpixel techniques

Abstract: We introduce and analyze techniques for the reduction of aliased signal energy in a staring infrared imaging system. A standard staring system uses a fixed two-dimensional detector array that corresponds to a fixed spatial sampling frequency determined by the detector pitch or spacing. Aliasing will occur when sampling a scene containing spatial frequencies exceeding half the sampling frequency. This aliasing can significantly degrade the image quality. The aliasing reduction schemes presented here, referred to as microscanning, exploit subpixel shifts between time frames of an image sequence. These multiple images are used to reconstruct a single frame with reduced aliasing. If the shifts are controlled, using a mirror or beam steerer for example, one can obtain a uniformly sampled microscanned image. The reconstruction in this case can be accomplished by a straightforward interlacing of the time frames. If the shifts are uncontrolled, the effective sampling may be nonuniform and reconstruction becomes more complex. A sampling model is developed and the aliased signal energy is analyzed for the microscanning techniques. Finally, a number of experimental results are presented that illustrate the perlormance of the microscanning methods.

A census-based stereo vision algorithm using modified Semi-Global Matching and plane fitting to improve matching quality

Abstract: This paper introduces a new segmentation-based approach for disparity optimization in stereo vision. The main contribution is a significant enhancement of the matching quality at occlusions and textureless areas by segmenting either the left color image or the calculated texture image. The local cost calculation is done with a Census-based correlation method and is compared with standard sum of absolute differences. The confidence of a match is measured and only non-confident or non-textured pixels are estimated by calculating a disparity plane for the corresponding segment. The quality of the local optimized matches is increased by a modified Semi-Global Matching (SGM) step with subpixel accuracy. In contrast to standard SGM, not the whole image is used for disparity optimization but horizontal stripes of the image. It is shown that this modification significantly reduces the memory consumption by nearly constant matching quality and thus enables embedded realization. Using the Middlebury ranking as evaluation criterion, it is shown that the proposed algorithm performs well in comparison to the pure Census correlation. It reaches a top ten rank if subpixel accuracy is supposed. Furthermore, the matching quality of the algorithm, especially of the texture-based plane fitting, is shown on two real-world scenes where a significant enhancement could be achieved.

Systems and methods for color binning

Abstract: In various exemplary embodiments, optically sensitive devices comprise a plurality of pixel regions Each pixel region includes an optically sensitive layer over a substrate and has subpixel regions for separate wavebands A pixel circuit comprises a charge store and a read out circuit for each subpixel region Circuitry is configured to select a plurality of subpixel elements from different pixels that correspond to the same waveband for simultaneous reading to a shared read out circuit

Color mosaic matrix display having expanded or reduced hexagonal dot pattern

Abstract: A display comprises a plurality of adjacent pixels wherein each pixel comprises three subpixels arranged in a triangular pattern, each having a hexagonal shape and substantially contiguous adjacent boundaries. This pattern allows predetermined subpixels to be increased or decreased in relative size without drastically affecting subpixel shape or the contiguous adjacent boundaries.