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Keywords:

  • Color matrix displays;
  • video processing;
  • color subpixels;
  • image scaling;
  • image processing;
  • display resolution

Abstract— The perceived resolution of matrix displays increases when the relative position of the color subpixels is taken into account. “Subpixel-rendering” algorithms are being used to convert an input image to subpixel-corrected display images. This paper deals with the consequences of the subpixel structure and the theoretical background of the resolution gain. We will show that this theory allows a low-cost implementation in an image scaler. This leads to high flexibility, allowing different subpixel arrangements and a simple control over the trade-off between perceived resolution and color errors.