java - java中如何将矩阵转换为图像

Question

我有一个矩阵 a[512][512]，其中填充了 1 和 0，我如何将该矩阵转换为图像(.png、.jpg 等)。

Answer 1

这将从您创建的矩阵创建灰度图像:

import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;
import javax.imageio.ImageIO;
import javax.swing.JFrame;

//Consider class and methods predefined. The following will be within a method

try {
    BufferedImage image;
    for(int i=0; i<yourmatrix.length; i++) {
        for(int j=0; j<yourmatrix[].length; j++) {
            int a = yourmatrix[i][j];
            Color newColor = new Color(a,a,a);
            image.setRGB(j,i,newColor.getRGB());
        }
    }
    File output = new File("GrayScale.jpg");
    ImageIO.write(image, "jpg", output);
}

catch(Exception e) {}