def METHOD_NAME(img):
    # Normalize array: center on 0., ensure variance is 0.15
    img -= img.mean()
    img /= img.std() + 1e-5
    img *= 0.15
    # Center crop
    img = img[25:-25, 25:-25, :]
    # Clip to [0, 1]
    img += 0.5
    img = np.clip(img, 0, 1)
    # Convert to RGB array
    img *= 255
    img = np.clip(img, 0, 255).astype("uint8")
    return img