使用 Java 进行图像处理 - 图像翻转

public static BufferedImage flipHorizontalJ2D(BufferedImage bufferedImage) ...{
        int width = bufferedImage.getWidth();
        int height = bufferedImage.getHeight();

        BufferedImage dstImage = new BufferedImage(width, height, bufferedImage.getType());
       
        AffineTransform affineTransform = new AffineTransform( -1, 0, 0, 1, width, 0);
        AffineTransformOp affineTransformOp = new AffineTransformOp(affineTransform, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
       
        return affineTransformOp.filter(bufferedImage, dstImage);
    }

    /**
     * 图像竖直翻转。
     * @param bufferedImage 原图像。
     * @return 返回竖直翻转后的图像。
     */
    public static BufferedImage flipVerticalJ2D(BufferedImage bufferedImage) ...{
        int width = bufferedImage.getWidth();
        int height = bufferedImage.getHeight();

        BufferedImage dstImage = new BufferedImage(width, height, bufferedImage.getType());
       
        AffineTransform affineTransform = new AffineTransform(1, 0, 0, -1, 0, height);
        AffineTransformOp affineTransformOp = new AffineTransformOp(affineTransform, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
       
        return affineTransformOp.filter(bufferedImage, dstImage);
    }