PDF Drawing Analysis
PDF drawing analysis – evaluate technical PDF drawings automatically
This tool analyses technical drawings in PDF format and extracts structured information from technical documents, manufacturing drawings and design documents.
The PDF file is processed server-side and automatically deleted after analysis.
What is PDF drawing analysis used for?
Technical PDF drawings often contain dimensions, title blocks, revision data, technical notes and geometry data. The tool supports automated evaluation of this information.
Typical applications:
- quality control of supplier drawings
- review of manufacturing documents
- preparation for ERP, PDM and CAM systems
- digitisation of archive drawings
- automatic capture of drawing data
Which functions are supported?
PDF drawing analysis combines OCR, image processing and document analysis.
- OCR text recognition for scanned drawings
- detection of dimensions
- extraction of title blocks
- detection of revision statuses
- analysis of technical texts and drawing information
- line and contour detection with OpenCV
How does the analysis work?
- Upload a PDF file
- Convert pages to image data
- Preprocess the drawing
- Run OCR and text recognition
- Analyse geometry and technical information
- Generate a structured analysis report
Depending on the document type, both vector information and scanned content are evaluated.
Which information can be recognised?
- drawing numbers
- part designations
- revision statuses
- dimension values
- dates and approvals
- technical notes
- title-block information
Technologies
The analysis uses modern open-source technologies:
- Tesseract OCR
- OpenCV
- Python-based document analysis
- PDF processing and text extraction
Current limitations
- Current maximum file size is 80 MB per PDF file
- By default the first pages are analysed
- OCR quality depends on resolution and image quality
- Very complex drawings can take longer to analyse