java 实现图片的文字识别

Posted 2023-03-14

参考技术A 摘要图像识别是目前很热门的研究领域，涉及的知识很广，包括信息论、模式识别、模糊数学、图像编码、内容分类等等。本文仅对使用Java实现了一个简单的图像文本二值处理，关于识别并未实现。
　　步骤
　　建立文本字符模板二值矩阵
　　对测试字符进行二值矩阵化处理
　　代码
　　/*
　　* @(#)StdModelRepository.java
　　*
　　* This program is free software; you can redistribute it and/or modify
　　* it under the terms of the GNU General Public License as published by
　　* the Free Software Foundation; either version 3 of the License, or
　　* (at your option) any later version.
　　*
　　* This program is distributed in the hope that it will be useful,
　　* but WITHOUT ANY WARRANTY; without even the implied warranty of
　　* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
　　* GNU Library General Public License for more details.
　　* You should have received a copy of the GNU General Public License
　　* along with this program; if not, write to the Free Software
　　* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
　　*/
　　package cn.edu.ynu.sei.recognition.util;import java.awt.Image;import java.awt.image.BufferedImage;import java.io.File;import java.io.IOException;import java.util.ArrayList;import java.util.List;import java.util.logging.Level;import java.util.logging.Logger;import javax.imageio.ImageIO;/** * Hold character charImgs as standard model repository.
　　* @author 88250
　　* @version 1.0.0.0, Mar 20, 2008
　　*/
　　public class StdModelRepository
　　/** * hold character images
　　*/ List charImgs = new ArrayList();
　　/** * default width of a character
　　*/ static int width = 16 /** * default height of a character
　　*/ static int height = 28 /** * standard character model matrix
　　*/ public int[][][] stdCharMatrix = new int[27][width][height];
　　/** * Default constructor.
　　*/ public StdModelRepository()
　　BufferedImage lowercase = null try
　　lowercase = ImageIO.read(new File("lowercase.png"));
　　 catch (IOException ex)
　　Logger.getLogger(StdModelRepository.class.getName()).
　　log(Level.SEVERE, null, ex);
　　
　　for (int i = 0 i < 26 i++)
　　charImgs.add(lowercase.getSubimage(i * width,
　　0,
　　width,
　　height));
　　
　　for (int i = 0 i < charImgs.size(); i++)
　　Image image = charImgs.get(i);
　　int[] pixels = ImageUtils.getPixels(image,
　　image.getWidth(null),
　　image.getHeight(null));
　　stdCharMatrix[i] = ImageUtils.getSymbolMatrix(pixels, 0).clone();
　　ImageUtils.displayMatrix(stdCharMatrix[i]);
　　
　　
　　
　　/*
　　* @(#)ImageUtils.java
　　*
　　* This program is free software; you can redistribute it and/or modify
　　* it under the terms of the GNU General Public License as published by
　　* the Free Software Foundation; either version 3 of the License, or
　　* (at your option) any later version.
　　*
　　* This program is distributed in the hope that it will be useful,
　　* but WITHOUT ANY WARRANTY; without even the implied warranty of
　　* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
　　* GNU Library General Public License for more details.
　　* You should have received a copy of the GNU General Public License
　　* along with this program; if not, write to the Free Software
　　* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
　　*/
　　package cn.edu.ynu.sei.recognition.util;import java.awt.Image;import java.awt.image.PixelGrabber;import java.util.logging.Level;import java.util.logging.Logger;/** * Mainipulation of image data.
　　* @author 88250
　　* @version 1.0.0.3, Mar 20, 2008
　　*/
　　public class ImageUtils
　　/** * Return all of the pixel values of sepecified <code>image< .>　　* @param image the sepecified image
　　* @param width width of the image
　　* @param height height of the image
　　* @return */ public static int[] getPixels(Image image, int width, int height)
　　int[] pixels = new int[width * height];
　　try
　　new PixelGrabber(image, 0, 0, width, height, pixels, 0, width).grabPixels();
　　 catch (InterruptedException ex)
　　Logger.getLogger(ImageUtils.class.getName()).
　　log(Level.SEVERE, null, ex);
　　
　　return pixels;
　　
资源来自：
http://blog.csdn.net/chief1985/article/details/2229572