White Gutter Detection
A layout analysis method that detects column boundaries by scanning for vertically continuous blank regions on a page; it is a lightweight heuristic rule following the projection method.
Timeline (last 90 days)
The white-gutter detection method determines multi-column structure by scanning for vertically continuous blank regions on the page; it performs well on standard two-column body text, but cross-column elements interrupt the white gutter.
The hybrid strategy that ultimately worked has three layers: detect column boundaries via white gutters, fall back to single-column flow when there is no stable white gutter, and preferentially respect the reading-order hints provided by the PDF itself.
All Facts (2)
The white-gutter detection method determines multi-column structure by scanning for vertically continuous blank regions on the page; it performs well on standard two-column body text, but cross-column elements interrupt the white gutter.
50%UnverifiedThe hybrid strategy that ultimately worked has three layers: detect column boundaries via white gutters, fall back to single-column flow when there is no stable white gutter, and preferentially respect the reading-order hints provided by the PDF itself.
50%