将图片每个像素点转为1、0输出

将图片每个像素点转为1、0输出

package com.briup.yao;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;

import javax.imageio.ImageIO;

public class Test {

	public int[][] imgMtr(String imagePath) throws Exception {
		BufferedImage image = ImageIO.read(new FileInputStream(new File(imagePath)));
		int w = image.getWidth();
		int h = image.getHeight();
		int[][] mtr = new int[h][w]; // 存储矩阵
		for (int i = 0; i < h; i++) {
			for (int j = 0; j < w; j++) {
				int rgb = image.getRGB(j, i); // aRGB
				// 依次检查R、G、B是否超过阈值
				// 超过视为白色，否则黑色
				int r = (rgb & 0x00ff0000) >> 16;
				int g = (rgb & 0x0000ff00) >> 8;
				int b = (rgb & 0x000000ff);
				int a = 0xff / 2; // 阈值， 可根据需要设定
				if (r > a && g > a && b > a) {
					mtr[i][j] = 1;
				} else {
					mtr[i][j] = 0;
				}
			}
		}
		return mtr;
	}

	public static void main(String[] args) throws Exception {
		Test test = new Test();
		int[][] result = test.imgMtr("E:\\Java/sss.jpg");
		for (int[] row : result) {
			for (int col : row) {
				System.out.print(col);
			}
			System.out.print("\n");
		}
	}
}

标签：输出,int,image,mtr,rgb,new,import,转为,像素点
来源： https://blog.csdn.net/weixin_45553582/article/details/100213626