def get_region_around_face(self, image_width, x, y, w, h):
        x_expand = int(w * HelmetClassification.EXPAND_X)
        y_expand = int(h * HelmetClassification.EXPAND_Y)

        x_new = max(0, x - x_expand)
        w_new = min(image_width - x, w + x_expand)

        y_new = max(0, y - y_expand)

        return x_new, y_new, w_new, h