Converting one colour line image for laser engraving

convert.py

# Reimport necessary libraries and redefine the function due to the state reset
from PIL import Image

# Define the function to convert non-transparent pixels to black
def convert_non_transparent_to_black(image_path, output_path):
    # Open the image
    image = Image.open(image_path).convert("RGBA")
    data = image.load()

    # Iterate through all pixels
    for y in range(image.height):
        for x in range(image.width):
            r, g, b, a = data[x, y]  # Get RGBA values
            if a != 0:  # If not transparent, set to black
                data[x, y] = (0, 0, 0, a)
    
    # Save the updated image
    image.save(output_path)
    return output_path

# Process the newly uploaded image
new_image_path = "source.png"
new_output_path = new_image_path.replace(".png", "_black.png")

convert_non_transparent_to_black(new_image_path, new_output_path)

ImageConversion.md

Converting one colour line image for laser engraving

• Download image
• Remove background and keep only one colour line
• Run script that will replace all non transparent colours with black

Example

Original image

• Image: https://cz.pinterest.com/pin/6333255720483153/
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Image without background with remnants of other colours

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Result with only black colour

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