pandid-valve-symbol-instance

What problem does it solve?

Extract pixel-anchored P&ID valve symbol instances from one prepared tile. A row may exist only after an isolated symbol crop has been classified as a valve class. Text never produces rows, and tag profiles never delete rows.

Core Features & Use Cases

• Isolated-crop valve detection: identifies plausible valve glyphs and crops away nearby text to generate clean symbol instances.
• Row emission with strict rules: outputs one row per valve crop and applies count_include semantics based on symbol_confidence.
• Output fidelity and integration: uses the standardized valve stub schema and captures page-global coordinates and crop references for traceability.
• Validation and QA readiness: ensures rows meet evidence requirements (center coordinates, bbox, symbol_class, and confidence) and supports downstream review.

Quick Start

Run the valve symbol extractor on each prepared tile to produce a symbol-instance table from isolated crops.