Java 中的数值图像识别

Question

我想认识Pic1中的数字。

我做了一些工作，它 returns 到 pic2

这是我的代码：

package captchadecproj;

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

/*
 * @author Mr__Hamid
 */



public class NewClass {

public static void main(String args[]) throws IOException {
    int width = 110;
    int heigth = 40;
    BufferedImage image1 = new BufferedImage(width, heigth, BufferedImage.TYPE_INT_RGB);
    BufferedImage num1 = new BufferedImage(width, heigth, BufferedImage.TYPE_INT_RGB);
    BufferedImage image = null;
    File f = null;
    try {
        f = new File("E:\Desktop 2\Captcha Project\CaptchaDecoder\captchaDecProj\167.png");
        image = new BufferedImage(width, heigth, BufferedImage.TYPE_INT_ARGB);
        image = ImageIO.read(f);
        System.out.println("Read!");
    } catch (IOException e) {
        System.out.println("Error" + e);
    }
    int[] pixel = null;
    for (int y = 0; y < image.getHeight(); y++) {
        for (int x = 0; x < image.getWidth(); x++) {
            pixel = image.getRaster().getPixel(x, y, new int[3]);
            if (pixel[0] < 30 & pixel[1] > 130 & pixel[2] < 110 & pixel[2] > 60) {
                image1.setRGB(x, y, Integer.parseInt("ffffff".trim(), 16));
                System.out.println(pixel[0] + " - " + pixel[1] + " - " + pixel[2] + " - " + (image.getWidth() * y + x));
            } else {
                image1.setRGB(x, y, 1);
                System.out.println(pixel[0] + " - " + pixel[1] + " - " + pixel[2] + " - " + (image.getWidth() * y + x));
            }

        }
    }

    try {
        f = new File("D:\Original.jpg");
        ImageIO.write(image, "jpg", f);
        f = new File("D:\black&White.jpg");
        ImageIO.write(image1, "jpg", f);
        System.out.println("Writed");
    } catch (IOException e) {
        System.out.println("Error" + e);
    }
}
}

我有两个问题：

如何拆分这些数字？

如何识别我的号码是哪一个？

例如在上传的图片中：7, 1, 6

Answer 1

这是第一个问题的答案，即如何拆分数字。我向你推荐一些东西，就是将你的图像转换为二维数组，然后所有操作都会比你使用 BufferedImage.

时执行得快得多

BufferedImage image = ImageIO.read(new URL("http://i.stack.imgur.com/QaTj5.jpg"));
    int startPos = 0, lastValue = 0;
    Set<Integer> colours = new HashSet<>();
    for (int x = 0; x < image.getWidth(); x++) {
        int histValue = 0;

        for (int y = 0; y < image.getHeight(); y++) {
            colours.add(image.getRGB(x, y) );
            if (image.getRGB(x, y) == 0xffffFFFF) {
                histValue++;
            }
        }

        if (histValue == 0 && lastValue == 0) {
            startPos = x;
        } else if (histValue == 0 && lastValue != 0) {
            BufferedImage segment = image.getSubimage(startPos, 0, x
                    - startPos, image.getHeight());
            ImageIO.write(segment, "jpg", new File("Segment" + startPos
                    + ".jpg"));

        }
        lastValue = histValue; 
    }
    if (lastValue!=0){
        BufferedImage segment = image.getSubimage(startPos, 0, image.getWidth()
                - startPos, image.getHeight());
        ImageIO.write(segment, "jpg", new File("Segment" + startPos
                + ".jpg"));
    }

现在你需要做的就是找到一些好的ocr算法。

Java 中的数值图像识别

Numerical image recognition in Java

java

ocr

numbers

image

image-processing