图片文字识别java代码 java识别图片中的二维码

java截图后怎么用tesseract 文字识别

网上传的代码示例大多是在Windows下安装Tesseract ORC后通过CMD命令操作进行图识别操作.而 Tess4j 针对Tesseract 提供了JNI支持,同时还提供了一些图片操作的工具类,提供比如图片放大,旋转,黑白处理,锐化 等用来提高识别率的操作.操作十分方便. T

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java 实现图片的文字识别

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 codeimage .* @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：

怎么用java实现图片里面的数字识别

图片是由点组成（或者是别的方法），记录点的位置、颜色，控制点就行了。至于ocr，有难度，首先要制作文字的变化范围及整个字各部分的联系，这还是简单的。然后，图像分解就行了。额，我不会编程，稍微会点c++，所以这个回答就是假设如果我做这种程序的思路。

java 如何读取附加到图片上的文字

图片上的文字是没法读取的，以为这涉及到图像处理。非常非常复杂！因为如果你非要读取图片上的文字，不是几行代码可以搞定的，首相从matlaB开始学，了解什么是图像处理。然后再开发相应的jar包。当然，你也可以使用相关的软件工具，比如识图软件，通过读取软件的反馈也算是读取了图片上的文字