从文件中读取图形并转换为数组Java

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;

public class ImageReader {
    public static void main(String[] args) {
        try {
            // 读取图像文件
            File file = new File("image.jpg");
            BufferedImage image = ImageIO.read(file);

            // 获取图像的宽度和高度
            int width = image.getWidth();
            int height = image.getHeight();

            // 创建一个二维数组来存储图像的像素值
            int[][] pixels = new int[height][width];

            // 将图像的像素值存储到数组中
            for (int y = 0; y < height; y++) {
                for (int x = 0; x < width; x++) {
                    int rgb = image.getRGB(x, y);
                    int red = (rgb >> 16) & 0xFF;
                    int green = (rgb >> 8) & 0xFF;
                    int blue = rgb & 0xFF;
                    int gray = (red + green + blue) / 3;
                    pixels[y][x] = gray;
                }
            }

            // 打印数组中的像素值
            for (int y = 0; y < height; y++) {
                for (int x = 0; x < width; x++) {
                    System.out.print(pixels[y][x] + " ");
                }
                System.out.println();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}