kicad_portraits.py

def create_layers(img, name):
    from PIL import Image
    
    def combine(img, layers):
        result = Image.new('RGB', img.size, 0x000000)
        for i in range(img.size[0]):
            for j in range(img.size[1]):
                if img.getpixel((i, j)) in layers:
                    result.putpixel((i, j), 0xFFFFFF)
                else:
                    result.putpixel((i, j), 0x000000)
        return result
        
    img_q = img.quantize(5)
    combine(img_q, [4, 2, 1]).save(name + "_copper.png")
    combine(img_q, [2, 3]).save(name + "_soldermask.png")
    combine(img_q, [1]).save(name + "_silkscreen.png")