统计像素图像素个数

统计像素图像素个数

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

//用于计算图像RGB

public class Main3 {

    public static void main(String[] arg) {
        //白色
        int writecount = 0;
        //黑色
        int blackcount = 0;
        //红色
        int redcount = 0;
        //绿色
        int greencount = 0;
        //蓝色
        int bluecount = 0;

        //总数
        int count = 0;

        System.out.println("开始读取图片");

        File file = new File("e:\\3px.gif");

        BufferedImage bi = null;
        if (null != file) {

            try {
                bi = ImageIO.read(file);
            } catch (IOException e) {
                e.printStackTrace();
            }

            int width = bi.getWidth();
            int height = bi.getHeight();
            int minx = bi.getMinX();
            int miny = bi.getMinY();

            int rgba1 = bi.getRGB(41, 1332);
            Color mycolor1 = new Color(rgba1, true);
            int red1 = mycolor1.getRed();
            int green1 = mycolor1.getGreen();
            int blue1 = mycolor1.getBlue();

            System.out.println("mycolor1：" + mycolor1 + "，red：" + red1 + "，green：" + green1 + "，blue：" + blue1);

            System.out.println("图片的宽度为：" + width + " 图片的高度为：" + height);

            for (int i = minx; i < width; i++) {
                for (int j = miny; j < height; j++) {
                    int rgba = bi.getRGB(i, j);
                    Color mycolor = new Color(rgba, true);
                    int red = mycolor.getRed();
                    int green = mycolor.getGreen();
                    int blue = mycolor.getBlue();

//                    System.out.println("mycolor：" + mycolor + "，red：" + red + "，green：" + green + "，blue：" + blue);

                    if (red >= 250 && green < 5 & blue < 5) {
                        redcount++;
                    }
                    if (red < 5 && green >= 250 && blue < 5) {
                        greencount++;
                    }
                    if (red < 100 && green < 100 && blue >= 100) {
                        bluecount++;
                    }
                    if (red > 250 && green > 250 && blue > 250) {
                        writecount++;
                    }
                    if (red < 5 && green < 5 && blue < 5) {
                        blackcount++;
                    }

                    count++;
                }
            }

            System.out.println("这张图总像素点个数：" + count);

            System.out.println("黑色像素点个数有：" + blackcount);

            System.out.println("白色像素点个数有：" + writecount);

            System.out.println("红色像素点个数有：" + redcount);

            System.out.println("绿色色像素点个数有：" + greencount);

            System.out.println("蓝色像素点个数有：" + bluecount);
        } else {
            System.out.println("未读取到图片");
        }

    }
}