OpenCV Python Bindings

import cv2
import os

# Create a dummy image file for demonstration
# In a real scenario, replace 'test_image.jpg' with your image path.
img_placeholder_path = 'test_image.jpg'
if not os.path.exists(img_placeholder_path):
    try:
        import numpy as np
        dummy_img = np.zeros((300, 500, 3), dtype=np.uint8)
        cv2.putText(dummy_img, "Hello OpenCV", (50, 150), cv2.FONT_HERSHEY_SIMPLEX, 1, (255, 255, 255), 2)
        cv2.imwrite(img_placeholder_path, dummy_img)
        print(f"Created dummy image: {img_placeholder_path}")
    except ImportError:
        print("NumPy not found. Cannot create dummy image. Please ensure 'test_image.jpg' exists.")

# Load an image from file
img = cv2.imread(img_placeholder_path, cv2.IMREAD_COLOR)

# Check if image loading was successful
if img is None:
    print(f"Error: Could not load image from {img_placeholder_path}. Please ensure the file exists and is accessible.")
else:
    # Display the image in a window
    cv2.imshow('My Image', img)

    # Wait indefinitely until a key is pressed
    cv2.waitKey(0)

    # Close all OpenCV windows
    cv2.destroyAllWindows()

    # Optionally, save the processed image
    # cv2.imwrite('output_image.jpg', img)
    
    # Clean up dummy image if created
    if os.path.exists(img_placeholder_path) and 'dummy_img' in locals():
        os.remove(img_placeholder_path)
        print(f"Cleaned up dummy image: {img_placeholder_path}")