Windows下Java调用OCR进行图片识别

package OCR; import java.awt.image.BufferedImage;import java.io.File;import java.io.IOException;import java.util.Iterator;import java.util.Locale; import javax.imageio.IIOImage;import javax.imageio.ImageIO;import javax.imageio.ImageReader;import javax.imageio.ImageWriteParam;import javax.imageio.ImageWriter;import javax.imageio.metadata.IIOMetadata;import javax.imageio.stream.ImageInputStream;import javax.imageio.stream.ImageOutputStream; import com.sun.media.imageio.plugins.tiff.TIFFImageWriteParam; public class ImageIOHelper { /** * 图片文件转换为tif格式 * @param imageFile 文件路径 * @param imageFormat 文件扩展名 * @return */ public static File createImage(File imageFile, String imageFormat) { File tempFile = null; try {  Iterator<ImageReader> readers = ImageIO.getImageReadersByFormatName(imageFormat);  ImageReader reader = readers.next();   ImageInputStream iis = ImageIO.createImageInputStream(imageFile);  reader.setInput(iis);  //Read the stream metadata  IIOMetadata streamMetadata = reader.getStreamMetadata();    //Set up the writeParam  TIFFImageWriteParam tiffWriteParam = new TIFFImageWriteParam(Locale.CHINESE);  tiffWriteParam.setCompressionMode(ImageWriteParam.MODE_DISABLED);    //Get tif writer and set output to file  Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName("tiff");  ImageWriter writer = writers.next();    BufferedImage bi = reader.read(0);  IIOImage image = new IIOImage(bi,null,reader.getImageMetadata(0));  tempFile = tempImageFile(imageFile);  ImageOutputStream ios = ImageIO.createImageOutputStream(tempFile);  writer.setOutput(ios);  writer.write(streamMetadata, image, tiffWriteParam);  ios.close();    writer.dispose();  reader.dispose();   } catch (IOException e) {  e.printStackTrace(); } return tempFile; }  private static File tempImageFile(File imageFile) { String path = imageFile.getPath(); StringBuffer strB = new StringBuffer(path); strB.insert(path.lastIndexOf('.'),0); return new File(strB.toString().replaceFirst("(?<=//.)(//w+)$", "tif")); } }

package OCR; import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.InputStreamReader;import java.util.ArrayList;import java.util.List; import org.jdesktop.swingx.util.OS; public class OCR { private final String LANG_OPTION = "-l"; //英文字母小写l，并非数字1 private final String EOL = System.getProperty("line.separator"); private String tessPath = "C://Program Files//Tesseract-OCR"; //private String tessPath = new File("tesseract").getAbsolutePath();  public String recognizeText(File imageFile,String imageFormat)throws Exception{ File tempImage = ImageIOHelper.createImage(imageFile,imageFormat); File outputFile = new File(imageFile.getParentFile(),"output"); StringBuffer strB = new StringBuffer(); List<String> cmd = new ArrayList<String>(); if(OS.isWindowsXP()){  cmd.add(tessPath+"//tesseract"); }else if(OS.isLinux()){  cmd.add("tesseract"); }else{  cmd.add(tessPath+"//tesseract"); } cmd.add(""); cmd.add(outputFile.getName()); //cmd.add(LANG_OPTION); //cmd.add("chi_sim"); //cmd.add("eng");  ProcessBuilder pb = new ProcessBuilder(); pb.directory(imageFile.getParentFile());  cmd.set(1, tempImage.getName()); pb.command(cmd); pb.redirectErrorStream(true);  Process process = pb.start(); //tesseract.exe 1.jpg 1 -l chi_sim int w = process.waitFor();  //删除临时正在工作文件 tempImage.delete();  if(w==0){  BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream(outputFile.getAbsolutePath()+".txt"),"UTF-8"));    String str;  while((str = in.readLine())!=null){  strB.append(str).append(EOL);  }  in.close(); }else{  String msg;  switch(w){  case 1:   msg = "Errors accessing files.There may be spaces in your image's filename.";   break;  case 29:   msg = "Cannot recongnize the image or its selected region.";   break;  case 31:   msg = "Unsupported image format.";   break;  default:   msg = "Errors occurred.";  }  tempImage.delete();  //throw new RuntimeException(msg); } new File(outputFile.getAbsolutePath()+".txt").delete(); return strB.toString(); }}

package OCR;import java.io.File;import java.io.IOException; public class TestOcr {  /** * @param args */ public static void main(String[] args) { //输入图片地址 String path = "d://test//test.bmp";      try {        String valCode = new OCR().recognizeText(new File(path), "bmp");        System.out.println(valCode);      } catch (IOException e) {        e.printStackTrace();      } catch (Exception e) {  e.printStackTrace(); }   } }