def feather_list(objs, feather_x=2, feather_y=2, max_x=1920, max_y=1920):
    """
    Feather the input coordinates by some amount
    :param objs: [(t, coords)]
    :param feather_x: Feather x by this much
    :param feather_y: Feather y by this much
    :param max_x: Document X
    :param max_y: Document Y
    :return: [(t, feathered_coords, score)]
    """
    new_objs = []
    for obj in objs:
        t, coords, score = obj
        new_coords = [max(coords[0]-feather_x, 0), max(coords[1]-feather_y, 0),
                      min(coords[2]+feather_x, max_x), min(coords[3]+feather_y, max_y)]
        new_objs.append((t, new_coords, score))
    return new_objs