feat: Fix OCR errors and add backend installation/management
BUG FIXES: 1. EasyOCR 'Invalid input type' error: - PIL Images must be converted to numpy arrays - Added np.array() conversion before passing to EasyOCR 2. PaddleOCR 'Unknown argument: show_log' error: - Some versions don't support show_log parameter - Added try/except to handle both versions - Falls back to creating PaddleOCR without show_log NEW FEATURES: 1. OCR Backend Manager (core/ocr_backend_manager.py): - Detects installed OCR backends - Checks Windows Registry for Tesseract installation - Searches common installation paths - Auto-configures pytesseract with found binary 2. Calibration Tab Improvements: - Added 'Install EasyOCR' button (pip install easyocr) - Added 'Install Tesseract Package' button (pip install pytesseract) - Added 'Auto-Detect Tesseract' button (checks registry/paths) - Added 'Install PaddleOCR' button (pip install paddleocr) - Shows which backends are available and where they're installed 3. Better Error Messages: - Clear instructions when backends are missing - Direct links to download pages - Shows detected installation paths The app now: - Automatically finds Tesseract from registry - Allows installing backends from within the UI - Properly handles all OCR input formats
This commit is contained in:
LemonNexus
parent
d7b7b491b5
commit
999bdfca35
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@ -0,0 +1,209 @@
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"""
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EU-Utility - OCR Backend Manager
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Manages OCR backend installation and configuration.
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Checks registry for installed software and provides auto-configuration.
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"""
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import sys
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import subprocess
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from pathlib import Path
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from typing import Optional, Dict, List, Tuple
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# Windows registry checking
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if sys.platform == 'win32':
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import winreg
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WINDOWS = True
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else:
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WINDOWS = False
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class OCRBackendManager:
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"""Manages OCR backend detection and installation."""
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TESSERACT_REGISTRY_PATHS = [
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(winreg.HKEY_LOCAL_MACHINE, r"SOFTWARE\Tesseract-OCR"),
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(winreg.HKEY_LOCAL_MACHINE, r"SOFTWARE\WOW6432Node\Tesseract-OCR"),
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(winreg.HKEY_CURRENT_USER, r"SOFTWARE\Tesseract-OCR"),
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]
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TESSERACT_DEFAULT_PATHS = [
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Path(r"C:\Program Files\Tesseract-OCR"),
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Path(r"C:\Program Files (x86)\Tesseract-OCR"),
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Path.home() / "Tesseract-OCR",
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]
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def __init__(self):
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self.backends = {
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'easyocr': {'installed': False, 'available': False, 'path': None},
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'tesseract': {'installed': False, 'available': False, 'path': None},
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'paddleocr': {'installed': False, 'available': False, 'path': None},
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}
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self._scan_backends()
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def _scan_backends(self):
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"""Scan for installed OCR backends."""
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self._check_easyocr()
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self._check_tesseract()
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self._check_paddleocr()
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def _check_easyocr(self):
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"""Check if EasyOCR Python package is installed."""
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try:
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import easyocr
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self.backends['easyocr']['installed'] = True
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self.backends['easyocr']['available'] = True
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except ImportError:
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pass
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def _check_tesseract(self):
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"""Check if Tesseract is installed (Python package and binary)."""
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# Check Python package
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try:
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import pytesseract
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self.backends['tesseract']['installed'] = True
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except ImportError:
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pass
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# Check for binary in various locations
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tesseract_exe = self._find_tesseract_binary()
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if tesseract_exe:
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self.backends['tesseract']['path'] = str(tesseract_exe)
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self.backends['tesseract']['available'] = True
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# Configure pytesseract if Python package is installed
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try:
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import pytesseract
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pytesseract.pytesseract.tesseract_cmd = str(tesseract_exe)
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except ImportError:
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pass
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def _find_tesseract_binary(self) -> Optional[Path]:
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"""Find Tesseract binary in registry and common paths."""
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# Check if already in PATH
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try:
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result = subprocess.run(['tesseract', '--version'],
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capture_output=True, text=True, timeout=5)
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if result.returncode == 0:
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# Tesseract is in PATH
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return Path('tesseract')
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except:
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pass
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if WINDOWS:
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# Check Windows Registry
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for hkey, reg_path in self.TESSERACT_REGISTRY_PATHS:
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try:
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with winreg.OpenKey(hkey, reg_path) as key:
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install_path, _ = winreg.QueryValueEx(key, 'InstallDir')
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if install_path:
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exe_path = Path(install_path) / 'tesseract.exe'
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if exe_path.exists():
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return exe_path
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except:
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continue
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# Check default installation paths
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for path in self.TESSERACT_DEFAULT_PATHS:
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exe_path = path / 'tesseract.exe'
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if exe_path.exists():
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return exe_path
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return None
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def _check_paddleocr(self):
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"""Check if PaddleOCR Python package is installed."""
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try:
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from paddleocr import PaddleOCR
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self.backends['paddleocr']['installed'] = True
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self.backends['paddleocr']['available'] = True
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except ImportError:
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pass
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def get_backend_status(self, backend: str) -> Dict:
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"""Get status of a specific backend."""
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return self.backends.get(backend, {}).copy()
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def get_all_status(self) -> Dict:
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"""Get status of all backends."""
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return self.backends.copy()
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def get_best_available(self) -> Optional[str]:
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"""Get the best available backend."""
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priority = ['easyocr', 'tesseract', 'paddleocr']
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for backend in priority:
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if self.backends[backend]['available']:
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return backend
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return None
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def install_backend(self, backend: str) -> Tuple[bool, str]:
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"""Install a backend via pip."""
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packages = {
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'easyocr': 'easyocr',
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'tesseract': 'pytesseract',
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'paddleocr': 'paddleocr',
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}
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if backend not in packages:
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return False, f"Unknown backend: {backend}"
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try:
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result = subprocess.run(
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[sys.executable, '-m', 'pip', 'install', packages[backend]],
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capture_output=True,
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text=True,
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timeout=300
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)
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if result.returncode == 0:
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self._scan_backends() # Re-scan after install
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return True, f"Successfully installed {backend}"
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else:
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return False, f"Failed to install {backend}: {result.stderr}"
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except Exception as e:
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return False, f"Error installing {backend}: {e}"
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def get_tesseract_install_info(self) -> str:
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"""Get instructions for installing Tesseract."""
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return """Tesseract is not installed or not in PATH.
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To install Tesseract:
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1. Download installer from:
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https://github.com/UB-Mannheim/tesseract/wiki
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2. Run the installer and note the installation path
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(usually C:\Program Files\Tesseract-OCR)
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3. Add to PATH or use the auto-detect feature
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4. Restart EU-Utility
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Alternative: Use EasyOCR instead (pip install easyocr)
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"""
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def auto_configure_tesseract(self) -> bool:
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"""Auto-configure Tesseract from registry/paths."""
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if not WINDOWS:
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return False
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exe_path = self._find_tesseract_binary()
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if exe_path and exe_path != Path('tesseract'):
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try:
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import pytesseract
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pytesseract.pytesseract.tesseract_cmd = str(exe_path)
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self.backends['tesseract']['available'] = True
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self.backends['tesseract']['path'] = str(exe_path)
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return True
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except:
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pass
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return False
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# Singleton instance
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_ocr_manager = None
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def get_ocr_backend_manager() -> OCRBackendManager:
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"""Get the OCR backend manager singleton."""
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global _ocr_manager
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if _ocr_manager is None:
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_ocr_manager = OCRBackendManager()
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return _ocr_manager
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@ -59,11 +59,14 @@ class OCRTestThread(QThread):
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if self.backend in ('auto', 'easyocr'):
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if self.backend in ('auto', 'easyocr'):
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try:
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try:
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import easyocr
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import easyocr
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import numpy as np
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self.progress_update.emit(50, "Loading EasyOCR...")
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self.progress_update.emit(50, "Loading EasyOCR...")
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reader = easyocr.Reader(['en'], gpu=False, verbose=False)
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reader = easyocr.Reader(['en'], gpu=False, verbose=False)
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self.progress_update.emit(70, "Processing with EasyOCR...")
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self.progress_update.emit(70, "Processing with EasyOCR...")
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# Convert PIL Image to numpy array
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screenshot_np = np.array(screenshot)
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ocr_result = reader.readtext(
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ocr_result = reader.readtext(
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screenshot,
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screenshot_np,
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detail=0,
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detail=0,
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paragraph=True
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paragraph=True
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)
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)
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@ -86,11 +89,19 @@ class OCRTestThread(QThread):
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if not text and self.backend in ('auto', 'paddle'):
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if not text and self.backend in ('auto', 'paddle'):
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try:
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try:
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from paddleocr import PaddleOCR
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from paddleocr import PaddleOCR
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import numpy as np
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self.progress_update.emit(70, "Processing with PaddleOCR...")
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self.progress_update.emit(70, "Processing with PaddleOCR...")
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ocr = PaddleOCR(use_angle_cls=True, lang='en', show_log=False)
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# Try with show_log, fall back without for compatibility
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result = ocr.ocr(screenshot, cls=True)
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try:
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texts = [line[1][0] for line in result[0]]
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ocr = PaddleOCR(use_angle_cls=True, lang='en', show_log=False)
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text = '\n'.join(texts)
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except TypeError:
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ocr = PaddleOCR(use_angle_cls=True, lang='en')
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# Convert PIL to numpy
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screenshot_np = np.array(screenshot)
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result = ocr.ocr(screenshot_np, cls=True)
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if result and result[0]:
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texts = [line[1][0] for line in result[0]]
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text = '\n'.join(texts)
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backend_used = "paddleocr"
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backend_used = "paddleocr"
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except Exception as e:
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except Exception as e:
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if self.backend == 'paddle':
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if self.backend == 'paddle':
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@ -504,10 +515,62 @@ class GameReaderTestPlugin(BasePlugin):
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self.backend_status = QTextEdit()
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self.backend_status = QTextEdit()
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self.backend_status.setReadOnly(True)
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self.backend_status.setReadOnly(True)
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self.backend_status.setMaximumHeight(150)
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self.backend_status.setMaximumHeight(200)
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self._check_backends()
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self._check_backends()
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backend_layout.addWidget(self.backend_status)
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backend_layout.addWidget(self.backend_status)
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# Install buttons
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install_layout = QHBoxLayout()
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install_easyocr_btn = QPushButton("📦 Install EasyOCR")
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install_easyocr_btn.setStyleSheet("""
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QPushButton {
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background-color: #4ecdc4;
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color: #141f23;
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font-weight: bold;
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padding: 8px;
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}
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""")
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install_easyocr_btn.clicked.connect(self._install_easyocr)
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install_layout.addWidget(install_easyocr_btn)
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install_tesseract_btn = QPushButton("📦 Install Tesseract Package")
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install_tesseract_btn.setStyleSheet("""
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QPushButton {
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background-color: #ff8c42;
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color: #141f23;
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font-weight: bold;
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padding: 8px;
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}
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""")
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install_tesseract_btn.clicked.connect(self._install_pytesseract)
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install_layout.addWidget(install_tesseract_btn)
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detect_tesseract_btn = QPushButton("🔍 Auto-Detect Tesseract")
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detect_tesseract_btn.setStyleSheet("""
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QPushButton {
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background-color: #a0aec0;
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color: #141f23;
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font-weight: bold;
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padding: 8px;
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}
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""")
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detect_tesseract_btn.clicked.connect(self._auto_detect_tesseract)
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install_layout.addWidget(detect_tesseract_btn)
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install_paddle_btn = QPushButton("📦 Install PaddleOCR")
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install_paddle_btn.setStyleSheet("""
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QPushButton {
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background-color: #4a5568;
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color: white;
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font-weight: bold;
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padding: 8px;
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}
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""")
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install_paddle_btn.clicked.connect(self._install_paddleocr)
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install_layout.addWidget(install_paddle_btn)
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backend_layout.addLayout(install_layout)
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layout.addWidget(backend_group)
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layout.addWidget(backend_group)
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# Tips
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# Tips
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@ -587,9 +650,12 @@ class GameReaderTestPlugin(BasePlugin):
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if backend in ('auto', 'easyocr'):
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if backend in ('auto', 'easyocr'):
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try:
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try:
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import easyocr
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import easyocr
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import numpy as np
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reader = easyocr.Reader(['en'], gpu=False, verbose=False)
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reader = easyocr.Reader(['en'], gpu=False, verbose=False)
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# Convert PIL Image to numpy array for EasyOCR
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image_np = np.array(image)
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ocr_result = reader.readtext(
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ocr_result = reader.readtext(
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image,
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image_np,
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detail=0,
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detail=0,
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paragraph=True
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paragraph=True
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)
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)
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@ -618,6 +684,27 @@ class GameReaderTestPlugin(BasePlugin):
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)
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)
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raise e
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raise e
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if not text and backend in ('auto', 'paddle'):
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try:
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from paddleocr import PaddleOCR
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# Try without show_log argument for compatibility
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try:
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ocr = PaddleOCR(use_angle_cls=True, lang='en', show_log=False)
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except TypeError:
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# Older version without show_log
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ocr = PaddleOCR(use_angle_cls=True, lang='en')
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# Convert PIL to numpy for PaddleOCR
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import numpy as np
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image_np = np.array(image)
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result = ocr.ocr(image_np, cls=True)
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if result and result[0]:
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texts = [line[1][0] for line in result[0]]
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text = '\n'.join(texts)
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backend_used = "paddleocr"
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except Exception as e:
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if backend == 'paddle':
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raise e
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processing_time = time.time() - start_time
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processing_time = time.time() - start_time
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# Update UI (thread-safe via Qt signals would be better, but this works for simple case)
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# Update UI (thread-safe via Qt signals would be better, but this works for simple case)
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@ -786,28 +873,83 @@ class GameReaderTestPlugin(BasePlugin):
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except Exception as e:
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except Exception as e:
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self.dpi_label.setText(f"Error: {e}")
|
self.dpi_label.setText(f"Error: {e}")
|
||||||
|
|
||||||
|
def _install_easyocr(self):
|
||||||
|
"""Install EasyOCR backend."""
|
||||||
|
from core.ocr_backend_manager import get_ocr_backend_manager
|
||||||
|
manager = get_ocr_backend_manager()
|
||||||
|
success, message = manager.install_backend('easyocr')
|
||||||
|
if success:
|
||||||
|
self.notify_success("Installation Complete", message)
|
||||||
|
else:
|
||||||
|
self.notify_error("Installation Failed", message)
|
||||||
|
self._check_backends()
|
||||||
|
|
||||||
|
def _install_pytesseract(self):
|
||||||
|
"""Install pytesseract Python package."""
|
||||||
|
from core.ocr_backend_manager import get_ocr_backend_manager
|
||||||
|
manager = get_ocr_backend_manager()
|
||||||
|
success, message = manager.install_backend('tesseract')
|
||||||
|
if success:
|
||||||
|
self.notify_success("Installation Complete", message + "\n\nNote: You also need to install the Tesseract binary from:\nhttps://github.com/UB-Mannheim/tesseract/wiki")
|
||||||
|
else:
|
||||||
|
self.notify_error("Installation Failed", message)
|
||||||
|
self._check_backends()
|
||||||
|
|
||||||
|
def _install_paddleocr(self):
|
||||||
|
"""Install PaddleOCR backend."""
|
||||||
|
from core.ocr_backend_manager import get_ocr_backend_manager
|
||||||
|
manager = get_ocr_backend_manager()
|
||||||
|
success, message = manager.install_backend('paddleocr')
|
||||||
|
if success:
|
||||||
|
self.notify_success("Installation Complete", message)
|
||||||
|
else:
|
||||||
|
self.notify_error("Installation Failed", message)
|
||||||
|
self._check_backends()
|
||||||
|
|
||||||
|
def _auto_detect_tesseract(self):
|
||||||
|
"""Auto-detect Tesseract from registry/paths."""
|
||||||
|
from core.ocr_backend_manager import get_ocr_backend_manager
|
||||||
|
manager = get_ocr_backend_manager()
|
||||||
|
if manager.auto_configure_tesseract():
|
||||||
|
self.notify_success("Tesseract Found", f"Auto-configured Tesseract at:\n{manager.backends['tesseract']['path']}")
|
||||||
|
else:
|
||||||
|
self.notify_warning("Not Found", "Could not find Tesseract installation.\n\nPlease install from:\nhttps://github.com/UB-Mannheim/tesseract/wiki")
|
||||||
|
self._check_backends()
|
||||||
|
|
||||||
def _check_backends(self):
|
def _check_backends(self):
|
||||||
"""Check OCR backend availability."""
|
"""Check OCR backend availability with install buttons."""
|
||||||
|
from core.ocr_backend_manager import get_ocr_backend_manager
|
||||||
|
|
||||||
|
manager = get_ocr_backend_manager()
|
||||||
statuses = []
|
statuses = []
|
||||||
|
|
||||||
try:
|
# EasyOCR
|
||||||
import easyocr
|
easyocr_status = manager.get_backend_status('easyocr')
|
||||||
|
if easyocr_status['available']:
|
||||||
statuses.append("✅ EasyOCR - Available (recommended)")
|
statuses.append("✅ EasyOCR - Available (recommended)")
|
||||||
except ImportError:
|
else:
|
||||||
statuses.append("❌ EasyOCR - Not installed\n Install: pip install easyocr")
|
statuses.append("❌ EasyOCR - Not installed\n Click 'Install EasyOCR' button below")
|
||||||
|
|
||||||
try:
|
# Tesseract
|
||||||
import pytesseract
|
tesseract_status = manager.get_backend_status('tesseract')
|
||||||
# Also check if tesseract binary is available
|
if tesseract_status['available']:
|
||||||
try:
|
path_info = f" at {tesseract_status['path']}" if tesseract_status['path'] else ""
|
||||||
pytesseract.get_tesseract_version()
|
statuses.append(f"✅ Tesseract - Available{path_info}")
|
||||||
statuses.append("✅ Tesseract - Available")
|
elif tesseract_status['installed']:
|
||||||
except Exception:
|
statuses.append("⚠️ Tesseract - Python package installed but binary not found\n Click 'Auto-Detect Tesseract' or install binary from:\n https://github.com/UB-Mannheim/tesseract/wiki")
|
||||||
statuses.append("⚠️ Tesseract - Python wrapper installed but tesseract binary not found\n Install binary from: https://github.com/UB-Mannheim/tesseract/wiki")
|
else:
|
||||||
except ImportError:
|
statuses.append("❌ Tesseract - Not installed\n Click 'Install Tesseract Package' then install binary")
|
||||||
statuses.append("❌ Tesseract - Not installed\n Install: pip install pytesseract\n Then install binary from: https://github.com/UB-Mannheim/tesseract/wiki")
|
|
||||||
|
|
||||||
try:
|
# PaddleOCR
|
||||||
|
paddle_status = manager.get_backend_status('paddleocr')
|
||||||
|
if paddle_status['available']:
|
||||||
|
statuses.append("✅ PaddleOCR - Available")
|
||||||
|
else:
|
||||||
|
statuses.append("❌ PaddleOCR - Not installed\n Click 'Install PaddleOCR' button below")
|
||||||
|
|
||||||
|
statuses.append("\n💡 Recommendation: EasyOCR is easiest (auto-downloads models)")
|
||||||
|
|
||||||
|
self.backend_status.setPlainText('\n'.join(statuses))
|
||||||
from paddleocr import PaddleOCR
|
from paddleocr import PaddleOCR
|
||||||
statuses.append("✅ PaddleOCR - Available")
|
statuses.append("✅ PaddleOCR - Available")
|
||||||
except ImportError:
|
except ImportError:
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue