<服务器端>OCR识别 .条形码识别，解析条形码并返回商品信息

原文参考地址：http://www.myexception.cn/image/763476.html

使用tesseract进行识 windows环境 64位 32位均可

tesseract安装到http://code.google.com/p/tesseract-ocr/下载 tesseract-ocr-setup-3.02.02.exe并安装，默认安装目录

工程下载地址：http://download.csdn.net/detail/b275518834/6019471

导入工程

修改CMD_OCR类中

tesseract = "C:\\Program Files (x86)\\Tesseract-OCR";默认目录
http://pc-20130624xrqe:8080/MyServlet/改成你的地址
OCR测试
http://pc-20130624xrqe:8080/MyServlet/OCR_ResolutionCode?img=http://t1.qpic.cn/mblogpic/41e82ee272e9b04c1352/2000.jpg
条形码测试
http://pc-20130624xrqe:8080/MyServlet/Zxing_ResolutionCode?img=http://t1.qpic.cn/mblogpic/f58a315bf7c1b1a9ef86/2000.jpg&des=true

package com.cn.myservlet;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.Iterator;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import myjava.utils.strings.UnicodeEncoding;
import myjava.utils.url.SearchBarcodeDec;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

import com.google.zxing.utils.ZxingEAN13DecoderHandler;
import commons.utils.UpLoadFileHelper;

public class Zxing_UpLoadFile extends HttpServlet {

// 下面的代码开始使用Commons-UploadFile组件处理上传的文件数据
private static FileItemFactory factory = new DiskFileItemFactory(); // 建立FileItemFactory对象
private static ServletFileUpload upload = new ServletFileUpload(factory);

protected void service(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
System.err.println("新请求");

request.setCharacterEncoding("UTF-8"); // 设置处理请求参数的编码格式
response.setContentType("text/html;charset=UTF-8"); // 设置Content-Type字段值
try {
// 获得附加信息
String type = URLEncoder.encode(request.getParameter("msg"),
"UTF-8");
} catch (Exception e1) {

}
File uploadFile=null;
try {
uploadFile = new UpLoadFileHelper(this)
.saveAndGetFile(request);
String code = new ZxingEAN13DecoderHandler()
.decode(uploadFile);
System.err.println("解码内容如下：");
System.err.println(code);
ServletOutputStream os = response.getOutputStream();
PrintWriter pw = new PrintWriter(os);
if(code==null)
{
code="can't parse img";
}else
{
System.err.println(code);
try {
code=new SearchBarcodeDec().search(code).toString();
code=new UnicodeEncoding().chinaToUnicode(code);
} catch (Exception e) {
//code="code can't found";
}

}
pw.write(code);
pw.flush();
pw.close();

} catch (FileUploadException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
if(uploadFile!=null&&uploadFile.exists())
{
uploadFile.delete();
}

}

}

package com.google.zxing.utils;
/*
* Copyright 2009 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0 *
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

import java.awt.Graphics2D;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.awt.image.WritableRaster;

import com.google.zxing.LuminanceSource;

/**
* This LuminanceSource implementation is meant for J2SE clients and our blackbox unit tests.
*
* @author dswitkin@google.com (Daniel Switkin)
* @author Sean Owen
* @author code@elektrowolle.de (Wolfgang Jung)
*/
public final class BufferedImageLuminanceSource extends LuminanceSource {

private static final double MINUS_45_IN_RADIANS = -0.7853981633974483; // Math.toRadians(-45.0)

private final BufferedImage image;
private final int left;
private final int top;

private static final boolean EXPLICIT_LUMINANCE_CONVERSION;
static {
String property = System.getProperty("explicitLuminanceConversion");
if (property == null) {
property = System.getenv("EXPLICIT_LUMINANCE_CONVERSION");
}
EXPLICIT_LUMINANCE_CONVERSION = Boolean.parseBoolean(property);
}

public BufferedImageLuminanceSource(BufferedImage image) {
this(image, 0, 0, image.getWidth(), image.getHeight());
}

public BufferedImageLuminanceSource(BufferedImage image, int left, int top, int width, int height) {
super(width, height);

if (image.getType() == BufferedImage.TYPE_BYTE_GRAY) {
this.image = image;
} else {
int sourceWidth = image.getWidth();
int sourceHeight = image.getHeight();
if (left + width > sourceWidth || top + height > sourceHeight) {
throw new IllegalArgumentException("Crop rectangle does not fit within image data.");
}

this.image = new BufferedImage(sourceWidth, sourceHeight, BufferedImage.TYPE_BYTE_GRAY);

if (EXPLICIT_LUMINANCE_CONVERSION) {

WritableRaster raster = this.image.getRaster();
int[] buffer = new int[width];
for (int y = top; y < top + height; y++) {
image.getRGB(left, y, width, 1, buffer, 0, sourceWidth);
for (int x = 0; x < width; x++) {
int pixel = buffer[x];

// see comments in implicit branch
if ((pixel & 0xFF000000) == 0) {
pixel = 0xFFFFFFFF; // = white
}

// .229R + 0.587G + 0.114B (YUV/YIQ for PAL and NTSC)
buffer[x] =
(306 * ((pixel >> 16) & 0xFF) +
601 * ((pixel >> 8) & 0xFF) +
117 * (pixel & 0xFF) +
0x200) >> 10;
}
raster.setPixels(left, y, width, 1, buffer);
}

} else {

// The color of fully-transparent pixels is irrelevant. They are often, technically, fully-transparent
// black (0 alpha, and then 0 RGB). They are often used, of course as the "white" area in a
// barcode image. Force any such pixel to be white:
if (image.getAlphaRaster() != null) {
int[] buffer = new int[width];
for (int y = top; y < top + height; y++) {
image.getRGB(left, y, width, 1, buffer, 0, sourceWidth);
boolean rowChanged = false;
for (int x = 0; x < width; x++) {
if ((buffer[x] & 0xFF000000) == 0) {
buffer[x] = 0xFFFFFFFF; // = white
rowChanged = true;
}
}
if (rowChanged) {
image.setRGB(left, y, width, 1, buffer, 0, sourceWidth);
}
}
}

// Create a grayscale copy, no need to calculate the luminance manually
this.image.getGraphics().drawImage(image, 0, 0, null);

}
}
this.left = left;
this.top = top;
}

@Override
public byte[] getRow(int y, byte[] row) {
if (y < 0 || y >= getHeight()) {
throw new IllegalArgumentException("Requested row is outside the image: " + y);
}
int width = getWidth();
if (row == null || row.length < width) {
row = new byte[width];
}
// The underlying raster of image consists of bytes with the luminance values
image.getRaster().getDataElements(left, top + y, width, 1, row);
return row;
}

@Override
public byte[] getMatrix() {
int width = getWidth();
int height = getHeight();
int area = width * height;
byte[] matrix = new byte[area];
// The underlying raster of image consists of area bytes with the luminance values
image.getRaster().getDataElements(left, top, width, height, matrix);
return matrix;
}

@Override
public boolean isCropSupported() {
return true;
}

@Override
public LuminanceSource crop(int left, int top, int width, int height) {
return new BufferedImageLuminanceSource(image, this.left + left, this.top + top, width, height);
}

/**
* This is always true, since the image is a gray-scale image.
*
* @return true
*/
@Override
public boolean isRotateSupported() {
return true;
}

@Override
public LuminanceSource rotateCounterClockwise() {
int sourceWidth = image.getWidth();
int sourceHeight = image.getHeight();

// Rotate 90 degrees counterclockwise.
AffineTransform transform = new AffineTransform(0.0, -1.0, 1.0, 0.0, 0.0, sourceWidth);

// Note width/height are flipped since we are rotating 90 degrees.
BufferedImage rotatedImage = new BufferedImage(sourceHeight, sourceWidth, BufferedImage.TYPE_BYTE_GRAY);

// Draw the original image into rotated, via transformation
Graphics2D g = rotatedImage.createGraphics();
g.drawImage(image, transform, null);
g.dispose();

// Maintain the cropped region, but rotate it too.
int width = getWidth();
return new BufferedImageLuminanceSource(rotatedImage, top, sourceWidth - (left + width), getHeight(), width);
}

public LuminanceSource rotateCounterClockwise45() {
int width = getWidth();
int height = getHeight();

int oldCenterX = left + width / 2;
int oldCenterY = top + height / 2;

// Rotate 45 degrees counterclockwise.
AffineTransform transform = AffineTransform.getRotateInstance(MINUS_45_IN_RADIANS, oldCenterX, oldCenterY);

int sourceDimension = Math.max(image.getWidth(), image.getHeight());
BufferedImage rotatedImage = new BufferedImage(sourceDimension, sourceDimension, BufferedImage.TYPE_BYTE_GRAY);

// Draw the original image into rotated, via transformation
Graphics2D g = rotatedImage.createGraphics();
g.drawImage(image, transform, null);
g.dispose();

int halfDimension = Math.max(width, height) / 2;
int newLeft = Math.max(0, oldCenterX - halfDimension);
int newTop = Math.max(0, oldCenterY - halfDimension);
int newRight = Math.min(sourceDimension - 1, oldCenterX + halfDimension);
int newBottom = Math.min(sourceDimension - 1, oldCenterY + halfDimension);

return new BufferedImageLuminanceSource(rotatedImage, newLeft, newTop, newRight - newLeft, newBottom - newTop);
}

}

package com.google.zxing.utils;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.net.URL;

import javax.imageio.ImageIO;

import com.google.zxing.BinaryBitmap;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.Result;
import com.google.zxing.common.HybridBinarizer;

/**
* @blog http://sjsky.iteye.com * @author Michael
*/
public class ZxingEAN13DecoderHandler {

/**
* @param imgPath
* @return String
*/
public String decode(String imgPath) {
return decode(new File(imgPath));
}

public String decode(File f) {
try {
return decode(new FileInputStream(f));
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
public String decode(InputStream in) {
BufferedImage image = null;
Result result = null;
try {
image = ImageIO.read(in);

if (image == null) {
System.out.println("the decode image may be not exit.");
}

LuminanceSource source = new BufferedImageLuminanceSource(image);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));

result = new MultiFormatReader().decode(bitmap, null);
return result.getText();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public String decode(URL url) {
BufferedImage image = null;
Result result = null;
try {
image = ImageIO.read(url);

if (image == null) {
System.out.println("the decode image may be not exit.");
}

LuminanceSource source = new BufferedImageLuminanceSource(image);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));

result = new MultiFormatReader().decode(bitmap, null);
return result.getText();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}

}

package tesseract;

import java.awt.image.BufferedImage;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

import myjava.utils.img.BufferedImageHandler;
import myjava.utils.img.ImageIOHelper;
import myjava.utils.img.ImageType;

import org.apache.commons.lang.StringUtils;

public class CMD_OCR implements Runnable {

/** 回调接口 */
private CMD_CallBack callBack;
/** tesseract 主程序目录 */
public static String tesseract;
static {
// String exePath = StringUtils.replace(
// CMD_OCR.class.getResource("tesseract.exe").getPath(), "%20", " ")
// .substring(1);
// tesseract = exePath.substring(0, exePath.lastIndexOf("/"));
tesseract = "C:\\Program Files (x86)\\Tesseract-OCR";
System.err.println("初始化 OCR目录--" + tesseract);

}

public String getTxt() {
return txt;
}

public void setTxt(String txt) {
this.txt = txt;
}

public String getResult() {
return result;
}

public void setResult(String result) {
this.result = result;
}

/** 结果缓存文本 */
public String txt;
/** 想要处理的文件 */
public String img;
/** 最终结果 */
public String result;

private File temp_img = null;
private File temp_txt = null;
private BufferedReader br;

private String encding = "chi_sim";
private BufferedImageHandler bih;

public CMD_OCR(String img, CMD_CallBack callback) {
super();
this.img = img;
this.callBack = callback;
this.txt = new File(img).getName();
}

public CMD_OCR(String img, CMD_CallBack callback, String encding,
BufferedImageHandler bih) {
super();
this.img = img;
this.callBack = callback;
this.txt = new File(img).getName();
this.encding = encding;
this.bih = bih;
}

public void run() {

// 将文件进行锐化高清处理
/*****/
try {

// 将文件转化为tiff格式
temp_img = getTiffImg(new File(img));

// 执行cmd指令
temp_txt = getCmdFile(temp_img);

result = getTxtContent(temp_txt);
if (callBack != null) {
callBack.callBack(result);
}
System.err.println("OCR code=" + result);

} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

destory();

}

private void destory() {
try {
if (temp_img != null && temp_img.exists())
temp_img.delete();
if (temp_txt != null && temp_txt.exists())
temp_txt.delete();
if (br != null)
try {
br.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}

private String getTxtContent(File temp_txt) throws IOException {
br = new BufferedReader(new InputStreamReader(new FileInputStream(
temp_txt), "utf-8"));
StringBuffer sb = new StringBuffer();
String str;
while ((str = br.readLine()) != null) {
sb.append(str);
}
br.close();
return sb.toString();

}

private File getCmdFile(File temp_img) throws Exception {
List<String> cmd = new ArrayList<String>();
cmd.add(tesseract + "\\tesseract");
cmd.add(temp_img.getPath());
cmd.add(txt);
cmd.add("-l");
// cmd.add("eng");
cmd.add(encding);
System.out.println(temp_img.getPath());
ProcessBuilder pb = new ProcessBuilder();
pb.directory(new File(tesseract));

System.out.println(cmd.toString());
ProcessBuilder obj = pb.command(cmd);
pb.redirectErrorStream(true);

Process process = pb.start();
// any error message?
CMD_Print errorGobbler = new CMD_Print(process.getErrorStream(),
"ERROR");

// any output?
CMD_Print outputGobbler = new CMD_Print(process.getInputStream(),
"OUTPUT");

// kick them off
errorGobbler.start();
outputGobbler.start();

int code = process.waitFor();
process.destroy();
String msg = null;
switch (code) {
case 1:
msg = "Errors accessing files. There may be spaces in your image's filename.";
break;
case 29:
msg = "Cannot recognize the image or its selected region.";
break;
case 31:
msg = "Unsupported image format.";
break;
default:
msg = "Errors occurred.";
}
System.out.println(msg);
if (code != 0) {
throw new Exception(msg);
}

return new File(tesseract + "\\" + txt + ".txt");
}

private File getTiffImg(File img) {

return new ImageIOHelper(bih).createImage(img,
ImageType.getFormatInFile(img));

}

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
CMD_OCR ocr = new CMD_OCR("C:\\Tesseract-OCR\\IMG_20130821_134512.jpg",
null);
new Thread(ocr).start();

}

}

工程下载地址：http://download.csdn.net/detail/b275518834/6019471