nkwsy / macro_tagger Goto Github PK

standardized hash: separates the actual image from the metadata and standardizes it then hash's it. Upside changing the metadata does not alter the file, downside is you must use the same process to check the hash of a file, if standardization is too general could get duplicates w/ visually similar images, longer to execute which could matter if it's checking on too many files. 

```python
from PIL import Image
import io
import hashlib

def calculate_image_hash(image_path):
    # Open the image file
    with Image.open(image_path) as img:
        # Convert image to RGB and resize
        img = img.convert('RGB').resize((8, 8), Image.ANTIALIAS)
        # Save resized image to a BytesIO object to get rid of any original metadata
        with io.BytesIO() as temp_file:
            img.save(temp_file, format='JPEG')
            temp_file.seek(0)  # Go to the start of the BytesIO object
            # Calculate the hash on the bytes of the standard image
            image_hash = hashlib.sha256(temp_file.read()).hexdigest()
    return image_hash

file_path = '/path/to/your/image.jpg'  # replace with your file path
print(f'The SHA256 hash of the image content is: {calculate_image_hash(file_path)}')