def process_uv(uv_coords, uv_h=256, uv_w=256):
    uv_coords[:, 0] = (uv_coords[:, 0] * (uv_w - 1))
    uv_coords[:, 1] = (uv_coords[:, 1] * (uv_h - 1))
    uv_coords[:, 1] = ((uv_h - uv_coords[:, 1]) - 1)
    uv_coords = np.hstack((uv_coords, np.zeros((uv_coords.shape[0], 1))))
    return uv_coords
def process_uv(uv_coords, uv_h=256, uv_w=256):
    uv_coords[:, 0] = (uv_coords[:, 0] * (uv_w - 1))
    uv_coords[:, 1] = (uv_coords[:, 1] * (uv_h - 1))
    uv_coords[:, 1] = ((uv_h - uv_coords[:, 1]) - 1)
    uv_coords = np.hstack((uv_coords, np.zeros((uv_coords.shape[0], 1))))
    return uv_coords