技能备份 - 2026-04-15 (40个技能)

2026-04-15 18:53:15 +08:00
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+# Engine Comparison
+
+## Tesseract vs PaddleOCR
+
+| Feature | Tesseract | PaddleOCR |
+|---------|-----------|-----------|
+| **Accuracy** | 90-95% | 98%+ |
+| **Chinese Support** | Good | Excellent |
+| **Speed** | ~200ms init, ~50ms/img | ~3s init, ~500ms/img |
+| **Memory** | ~100MB | ~500MB |
+| **Dependencies** | `pytesseract + cv2 + PIL` | `paddleocr + paddlepaddle` |
+| **Best For** | Quick extraction, English | High accuracy, Chinese docs |
+
+## When to Use Which
+
+### Use Tesseract When:
+- ✅ Extracting text from screenshots
+- ✅ Processing English-only documents
+- ✅ Need fast OCR (-web scraping, quick验证)
+- ✅ Limited memory environment
+
+### Use PaddleOCR When:
+- ✅ Processing Chinese documents
+- ✅ Need high accuracy (98%+)
+- ✅ Working with complex layouts（tables, forms）
+- ✅ Critical data extraction (invoices, contracts)
+
+## Performance Comparison
+
+| Task | Tesseract | PaddleOCR | Improvement |
+|------|-----------|-----------|-------------|
+| Screenshot text | ~70ms | ~600ms | Tesseract faster |
+| Chinese menu | ~200ms | ~550ms | - |
+| Invoice extraction | ~180ms | ~520ms | - |
+| Certificate OCR | ~250ms | ~580ms | PaddleOCR more accurate |
+
+## Quality Comparison
+
+### Example: Chinese Restaurant Menu
+
+**Tesseract (confidence: 88%)**
+```
+北京烤鸭
+宫保鸡丁
+麻婆豆腐...
+```
+
+**PaddleOCR (confidence: 99%)**
+```
+北京烤鸭
+宫保鸡丁
+麻婆豆腐
+...
+```
+
+### Example: English Invoice
+
+**Tesseract (confidence: 92%)**
+```
+Invoice #12345
+Date: 2024-03-05
+Amount: $199.99
+```
+
+**PaddleOCR (confidence: 98%)**
+```
+Invoice #12345
+Date: 2024-03-05
+Amount: $199.99
+```
+
+## Recommendation
+
+- **General use**: Auto mode (PaddleOCR by default for quality)
+- **Speed-critical**: Force Tesseract
+- **Chinese critical**: Force PaddleOCR
+- **Production**: Auto mode with fallback to PaddleOCR for low confidence