ocr_stabilizer 0.1.0

Real-time OCR overlay stabilization engine — drift correction, spatial indexing, block tracking. Built for Flutter.

0.1.0

Initial release.

Core

• StabilizationEngine — SAR merge, intra-batch dedup, contradiction detection
• DriftTracker — regional drift correction with submap isolation
• SpatialBlockIndex — grid-cell spatial index for O(cells) overlap queries
• OverlapResolver — spatial NMS with language-aware thresholds
• BlockKeyGenerator — position+text dedup keys with fuzzy neighbor matching
• BlockClassifierService — OCR group classification (fixed/sticky/carousel/IC/normal)

Types

• TrackedBlock<T> / ObservableBlock<P> — block identity interfaces
• AbsoluteRect — zero-cost coordinate-space safety (extension type)
• SpaceKey, ContainerId, ScrollContext, StickyFallback — value types

Utilities

• TextDedupUtils — Levenshtein, Jaccard, CJK detection
• RobustStats — median, MAD, IQR
• IqrOutlier — Tukey fence outlier detection