Drawing Parsing

Identify drawing pages, local regions, and text, then prepare drawing knowledge for text-to-image and image-to-image retrieval.

Prepare your resources

Prepare drawing PDFs or images, a CAD primary model, a vision model, a drawing knowledge base, and an output location. Start with one page containing annotations and part structure.

The knowledge base supplies text and image index settings. CAD analysis, visual assessment, and embedding have different model roles; check each separately.

Use the template

On the workflow creation page, start from a template, search for Drawing Parsing, and load it onto the canvas.

Complete the required fields in the parameter form.

Setting

Purpose

Source drawings

Drawing PDFs, images, or folders to process

CAD primary model

Main model for drawing structure analysis

CAD vision model

Vision model for CAD OCR and visual assessment

Drawing knowledge base

Select or create a drawing knowledge base that binds both text and image indexes

Output location

Location for drawing manifests and processing summaries

Save the parameters, then start a manual run. The system saves the current workflow before submitting execution.

Complete processing flow

Arrows show execution order; configured bindings supply each step’s input.

Drawing Parsing

Configure analysis and indexing

Setting

Default or purpose

Analysis mode

deep for structured reports; fast for coarse retrieval parsing

CAD service URL

Empty uses the built-in shared service; specify an actual endpoint for a self-hosted service

Three-level text index

Enabled, section size 5

Text embedding dimension

Form default 1024; match the selected model and index

Text write policy

OVERWRITE, replacing matching document row IDs

Image write policy

OVERWRITE, updating matching sources and model/preprocessing configurations

Validate the full flow in deep mode first. After switching to fast mode, check whether output satisfies the downstream visual manifest requirements; analysis completion alone does not verify the whole flow.

Inspect each result

  1. Compare pages, regions, part relationships, and OCR text with the drawing.

  2. Check manifest validation and page/object image references. This template requires page images, object images, and visual context.

  3. Inspect text and image writes separately. They share manifests but use different indexes.

  4. Inspect saved results and manifest file references.

  5. Check source mappings and asset relationships, then validate text-to-drawing and image retrieval.

Retain the full CAD result and per-source image mappings when editing. OCR text alone cannot replace the manifest input; image indexing needs readable images. See CAD Drawing Segmentation and Build Document Visual Manifest.

Example: an equipment assembly drawing

Select an assembly drawing and configure all models and the drawing knowledge base. Run in deep mode. Compare one part’s annotation and crop with the source, inspect index records, then retrieve by a known part name and verify the returned drawing.

Common problems

Symptom

Check and action

Manifest validation fails

Check the full CAD result and page/object images

Text works but images are incomplete

Check image references, dimensions, and per-file status

Analysis takes a long time

Inspect logs and input scope; validate a small sample before changing concurrency

Rerunning changes indexes

Confirm sources and destination before applying overwrite policies

Uncertain which template to use

Use the image-index document template for ordinary illustrated files; use this one for part and region analysis
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