TextureRegion

textr

 TextureRegion[][] parts = TextureRegion.split(new Texture("path.png"), 15, 23);
        boolean[][] used = new boolean[parts.length][parts[0].length];

        Random random = new Random();
        int ix = random.nextInt(used.length);
        int iy = random.nextInt(used[0].length);

        while (used[ix][iy]) {
            // todo: pick new
        }

        

        SpriteBatch spriteBatch = new SpriteBatch();
        spriteBatch.begin();
        spriteBatch.draw(parts[ix][ix], parts[0][0].getRegionWidth() * ix, 0);