def normalizeBox(box):
    """
    Convert any negative measurements in the current
    box to positive, and adjust the origin.
    """
    x, y, w, h = box
    if w < 0:
        x += w + 1
        w *= -1
    if h < 0:
        y += h + 1
        h *= -1
    return x, y, w, h
