INNER CODE UNIT · Python

clamp_alpha

KennethJAllen/proper-pixel-art · proper_pixel_art/colors.py:85

def clamp_alpha(
    image: Image.Image,
    alpha_threshold: int = ALPHA_THRESHOLD,
    mode: str = "RGB",
    background_hex: str | None = None,
    limit: int = _DEFAULTS.top_colors_limit,
    thumbnail_size: tuple[int, int] = _DEFAULTS.thumbnail_size,
    background_candidates: list[RGB] | None = None,
) -> Image.Image:
    """
    Replace pixels with alpha < threshold by a background color.
    If background_hex is None, choose a color far from the most common image colors.
    mode: 'RGB' or 'L'
    """
    if mode not in ("RGB", "L"):
        raise ValueError("mode must be 'RGB' or 'L'")

    if background_hex is None:

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