Java changing image to String with limited characters

Question

Currently, I am trying to work on an automated chat handler for Minecraft, where I can take certain strings / words, and see how close they identify with a set of blacklisted words. Currently, I found the code to turn a string to an image, Convert text content to Image, however, I need to find out how to create a learning mechanism to identify words. So if the word "tèst" is typed, the program will recognize è as the character e, and substitute that letter in to form test, which will cancel the message. Currently, my code based on the previous provided link is as follows:

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

public class Scan {

    public Scan () {}

    public void scan (String text) {

        BufferedImage img = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
        Graphics2D g2d = img.createGraphics();
        Font font = new Font("Arial", Font.PLAIN, 48);
        g2d.setFont(font);
        FontMetrics fm = g2d.getFontMetrics();
        int width = fm.stringWidth(text);
        int height = fm.getHeight();
        g2d.dispose();

        img = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
        g2d = img.createGraphics();
        g2d.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION, RenderingHints.VALUE_ALPHA_INTERPOLATION_QUALITY);
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g2d.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING, RenderingHints.VALUE_COLOR_RENDER_QUALITY);
        g2d.setRenderingHint(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_ENABLE);
        g2d.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
        g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
        g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_PURE);
        g2d.setFont(font);
        fm = g2d.getFontMetrics();
        g2d.setColor(Color.BLACK);
        g2d.drawString(text, 0, fm.getAscent());
        g2d.dispose();
        try {
            ImageIO.write(img, "png", new File("TEMP_TEXT.png"));
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }
}

Ideally, I would hope for something relatively quick, but even if its slow, it'd be nice to learn how to.

Why do you actually need this, and why are you doing it from images? for instance, I believe you can convert `è` to `e` without doing it as an image — LeoColman, Apr 14 '18 at 18:04
@Kerooker it was mostly in case users use a character that does not exist in the data, or is custom. — VeeAyeInIn, Apr 14 '18 at 18:31
It's an interesting approach! However, your question is too broad for SO, and it also verges on a request to recommend a library, which is off topic. If you start using something like Tensorflow (their tutorial on recognition of handwritten digits might be relevant to you), and have a specific question about a problem you encounter with it, you could ask here. — erickson, May 08 '18 at 15:11

score 1 · Accepted Answer · answered May 08 '18 at 15:04

1

You should implement some Machine Learning to filter that. I recommend this : Google Tensorflow.

While Machine Learning might need steep learning curve, you can follow the tutorial at https://developers.google.com/machine-learning/crash-course/.

answered May 08 '18 at 15:04

Мởṇṏсĺḕ Mᾶṇ

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Java changing image to String with limited characters

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