Multi-Column

The minimum horizontal gap (distance) between two regions required to consider them as separate columns.

• Expressed as a string with units (e.g., "0.2in").
• Lower values may cause closely spaced text to be treated as separate columns; higher values require more separation.

The maximum horizontal gap allowed between two regions to still consider them as part of the same column pair.

• Expressed as a string with units (e.g., "1in").
• Prevents columns that are too far apart from being grouped together.

The minimum vertical height required for a region to be considered as a column span.

• Expressed as a string with units (e.g., "2in").
• Used to filter out short or spurious column regions.

The minimum width required for a region to be considered a valid column.

• Expressed as a string with units (e.g., "2in").
• Prevents narrow regions (such as margins or gutters) from being misidentified as columns.

The minimum ratio of the narrower column's width to the wider column's width required to consider two regions as a valid column pair.

• Expressed as a double (e.g., 0.7).
• Ensures that columns are of similar width and prevents pairing of regions with highly unequal widths.

The minimum number of matching lines (rows) required to detect and process a multi-column region.

• Expressed as an integer (e.g., 5).
• Used to avoid false detection of columns in documents with only a few lines of text.