How to using mask image to remove pixels from original image?

[sergiotapia]

Sorry for the "guide" type question, but having a hard time finding the right docs here. I have an original image, and using SAM2 I created a mask of the image with the pixels I am interested in keeping.

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In python here's what I did with the Image library, and it works, results in the image I'm looking for.

from PIL import Image

# Load the original image and the mask
original = Image.open("original.png")
mask = Image.open("mask.png").convert("L")  # Convert mask to grayscale

# Ensure both images are the same size
if original.size != mask.size:
    raise ValueError("Original and mask images must have the same dimensions")

# Create a new transparent image and paste the original using the mask
result = Image.new("RGBA", original.size)
result.paste(original, (0, 0), mask)

# Save the result
result.save("result.png")

How can I do similar with the Image library in Elixir?