Fig. 1From: Vertical error correction of eye trackers in nonrestrictive reading conditionTwo different recordings. From left to right: raw fixations, fixations after the global vertical translation, and fixations after the final matching step. In the first text, the vertical translation is about -50 pixels; in the second text, this translation is about +23 pixels. After estimating and correcting the vertical error, the fixations are matched with the corresponding text linesBack to article page