from abc import ABC, abstractmethod
import numpy as np
from typing import List, Dict, Any

class OCRBackend(ABC):
    """Base class for OCR backends."""
    
    @abstractmethod
    async def initialize(self):
        """Initialize the OCR model."""
        pass
    
    @abstractmethod
    def detect(self, image: np.ndarray) -> List[Dict]:
        """Detect text in an image."""
        pass

class ObjectDetector(ABC):
    """Base class for object detectors."""
    
    @abstractmethod
    async def initialize(self):
        """Initialize the object detection model."""
        pass
    
    @abstractmethod
    def detect(self, image: np.ndarray) -> List[Dict]:
        """Detect objects in an image."""
        pass