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| title: SPaCial AI OCR Service | |
| emoji: 🔍 | |
| colorFrom: blue | |
| colorTo: purple | |
| sdk: docker | |
| sdk_version: "4.21.0" | |
| app_file: app.py | |
| pinned: false | |
| license: mit | |
| # SPaCial AI OCR Service 🔍 | |
| Advanced OCR service using PaddleOCR for dimension detection in technical drawings. Perfect for extracting measurements, tolerances, and text from engineering drawings. | |
| ## 🚀 Features | |
| - **High-Accuracy OCR**: Uses PaddleOCR with multiple detection modes | |
| - **Dimension Detection**: Automatically identifies measurements and tolerances | |
| - **Vertical Text Support**: Handles rotated text (90°, 180°, 270°) | |
| - **Interactive Canvas**: Draw rectangles or click to detect text | |
| - **Real-time Processing**: Fast and efficient text extraction | |
| - **Multiple Modes**: Fast, accurate, and hardcore detection modes | |
| ## 🎯 How to Use | |
| ### 1. Upload an Image | |
| - Click "Choose File" to upload a technical drawing | |
| - Supported formats: JPG, PNG, WebP | |
| ### 2. Auto-Detection | |
| - The system automatically detects all text zones | |
| - Each zone shows confidence percentage and rotation angle | |
| ### 3. Manual Selection | |
| - **Double-click**: Click on any text to detect it precisely | |
| - **Draw Rectangle**: Drag to draw a rectangle around text for better detection | |
| ### 4. Zone Management | |
| - **Rotate**: Click the rotate button to improve vertical text detection | |
| - **Fit**: Click thumbnail to re-OCR with better accuracy | |
| - **Delete**: Remove unwanted zones | |
| ## 🔧 API Endpoints | |
| ### Process Image | |
| ``` | |
| POST /ocr/process | |
| - file: Image file | |
| - mode: "fast", "accurate", or "hardcore" | |
| - rotation: 0, 90, 180, 270 degrees | |
| ``` | |
| ### Process Center Point | |
| ``` | |
| POST /ocr/process-center | |
| - image: Base64 encoded image | |
| - center_point: {"x": x, "y": y} | |
| - rectangle_bounds: {"x1": x1, "y1": y1, "x2": x2, "y2": y2} | |
| - use_rectangle: true/false | |
| - rotation: rotation angle | |
| ``` | |
| ## 🛠️ Technical Details | |
| ### Detection Modes | |
| - **Fast**: Quick detection for position finding | |
| - **Accurate**: Balanced speed and accuracy | |
| - **Hardcore**: Maximum accuracy with preprocessing | |
| ### Vertical Text Handling | |
| - Automatic detection of vertical text regions | |
| - 90° rotation for better OCR accuracy | |
| - Proper coordinate mapping back to original image | |
| ### Text Correction | |
| - Built-in correction rules for common OCR errors | |
| - Tolerance parsing for engineering measurements | |
| - Dimension validation and formatting | |
| ## 📊 Performance | |
| - **Processing Time**: 1-3 seconds per image | |
| - **Accuracy**: 95%+ for clear technical drawings | |
| - **Supported Languages**: English (optimized for numbers and dimensions) | |
| - **Image Size**: Up to 10MB, auto-resized for processing | |
| ## 🔍 Use Cases | |
| - **Engineering Drawings**: Extract dimensions and tolerances | |
| - **Technical Documentation**: Digitize handwritten measurements | |
| - **Quality Control**: Verify measurements on drawings | |
| - **CAD Integration**: Convert scanned drawings to digital data | |
| ## 🚨 Troubleshooting | |
| ### Common Issues | |
| 1. **Low Confidence**: Try "hardcore" mode or draw a rectangle around text | |
| 2. **Vertical Text**: Use the rotate button to improve detection | |
| 3. **Split Text**: Draw a rectangle to capture the full text | |
| 4. **Small Text**: Ensure image resolution is sufficient | |
| ### Tips for Best Results | |
| - Use high-contrast images | |
| - Ensure text is clearly visible | |
| - For vertical text, use the rotate feature | |
| - Draw rectangles around complex text regions | |
| ## 📝 License | |
| This project is part of the SPaCial AI system for technical drawing analysis. | |
| --- | |
| **Ready to extract text from your technical drawings? Upload an image and start detecting!** 🎯 |