PNG Image Separator/Island Isolator (useful for after effects animating png logos)

image-separator.py

import cv2
import numpy as np

def save_components(image_path):
    # Load the image with alpha channel
    img = cv2.imread(image_path, cv2.IMREAD_UNCHANGED)

    # Create a binary image where 0 indicates transparent pixels
    _, alpha_bin = cv2.threshold(img[:,:,3], 0, 255, cv2.THRESH_BINARY)

    # Find all connected components in the binary image
    num_labels, labels = cv2.connectedComponents(alpha_bin)

    for label in range(1, num_labels):
        # Create an empty image to store this component
        component_img = np.zeros_like(img)
        
        # Find pixels of this component and copy them from the original image
        component_img[labels == label] = img[labels == label]

        # Save the component image
        cv2.imwrite(f'component_{label}.png', component_img)

# Call the function with your image path
save_components('logo.png')