Spotlights: Attention-Optimized Highlights for Skim Reading
summary
Claims an attention-guided overlay called Spotlights that replaces continuous scrolling above 2 pages/s with stacked transparent, static excerpts and a click‑to‑jump link. Implementation parses PDFs to images, uses blob detection and heuristics to pick one object per page, displays it for calibrated durations (1.5 s exposure for text, 1.25 s for figures). Calibrated with 4 participants, tested on 200+ page documents in three studies; results show comparable comprehension, faster scrolling, better recall, and roughly 2× faster lookup for target figures.
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