post_process_numeric library

Numeric normalization passes for OCR post-processing.

Handles digit segment corrections, numeric gap repair, and date separator normalization.

Constants

digitConfusionMap → const Map<String, String>

Map of letters commonly confused with digits by OCR.

digitNonAlnumMap → const Map<String, String>

Map of non-alphanumeric characters commonly confused with digits.

highConfidenceDigitLookalikes → const Set<String>

Letters that are high-confidence digit lookalikes — safe to convert to digits even with only one digit-dominant neighbor.

Functions

normalizeDateSeparators(String line) → String

Removes OCR-introduced spaces around date separators and digit clusters.

normalizeDigitSegments(String line) → String

Corrects letter-like confusions inside digit-dominant token segments.

normalizeNumericGaps(String line) → String

Repairs noisy separators and spacing in numeric expressions.

normalizeStandaloneDecimalLikeToken(String line) → String

Normalizes standalone decimal-like tokens made only of digit lookalikes.

normalizeStructuredNumericFieldValue(String line) → String

Normalizes numeric-like values in simple structured field lines.