Undoing Subpixel Rendering for Better Screenshots

Abstract

Subpixel rendering employs the spatial layout of the red, green, and blue slices of a single square pixel on a screen to enhance the horizontal resolution. This method has become the de-facto standard for displaying text. Printed screenshots and screen magnifier software, however, reveal color seams. This is particularly vexing when screenshots are to be printed in color at a larger-than-normal scale, for instance in a tutorial article in a computing magazine. Hence, this work introduces a method for automatic correction.