Develop Reference

Google zxing api unable to decode barcode

I am using google zxing api for java to decode a barcode png image.The code is as below.The function new MultiFormatReader().decode(bitmap).getText()) does not work properly for all the barcode images.Please let me know in case any other additional details are required and if there's any better way to decode barcode images using google zxing.
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.imageio.ImageIO;
import org.apache.commons.codec.BinaryDecoder;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.NotFoundException;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.QRCodeReader;
public class DecodeBarcode {
public static void main(String[] args) throws IOException {
BufferedImage qrCodeImage = null;
DateFormat dateFormat = new SimpleDateFormat("yyyyMMddHHmmss");
Date date = new Date();
String imgname = "img_file_name.png";
qrCodeImage = ImageIO.read(new File("C:/Users/pathToTheFile/" + imgname));
try {
LuminanceSource source = new BufferedImageLuminanceSource(qrCodeImage);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
System.out.println("Decoded text===>" + new MultiFormatReader().decode(bitmap).getText());
} catch (NotFoundException e) {
System.out.println("barcode was not decoded successfully");
}
}
}

how to convert JPEG image to TIFF image?

I am developing an app for image processing for that I need to convert JPEG file to TIFF file.
I have tried below code snippet for conversion. But, it is generating corrupt tiff file.
Here is the code:
package javaapplication2;
import java.awt.Color;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import com.idrsolutions.image.tiff.TiffEncoder;
import java.io.FileOutputStream;
import java.io.OutputStream;
public class JavaApplication2
{
public static void main(String[] args)
{
BufferedImage bufferedImage;
try
{
bufferedImage = ImageIO.read(new File("C:\\Users\\Jay Tanna\\Desktop\\image1.jpg"));
BufferedImage newBufferedImage = new BufferedImage(bufferedImage.getWidth(),
bufferedImage.getHeight(), BufferedImage.TYPE_INT_RGB);
newBufferedImage.createGraphics().drawImage(bufferedImage, 0, 0, Color.WHITE, null);
OutputStream out = new FileOutputStream("C:\\Users\\Jay Tanna\\Desktop\\myNew_File.tiff");
TiffEncoder tiffEncoder = new TiffEncoder();
tiffEncoder.setCompressed(true);
tiffEncoder.write(newBufferedImage, out);
System.out.println("Done");
}
catch (IOException e)
{
e.printStackTrace();
}
}
}
Kindly help me with this issue.

Not familiar with com.idrsolutions.image.tiff.TiffEncoder, but you're definitely missing a out.close() without which some data may remain buffered and not make it to disk.

Change the extension of the file, try this:
OutputStream out = new FileOutputStream("C:\\Users\\Jay Tanna\\Desktop\\myNew_File.tiff");
for this:
OutputStream out = new FileOutputStream("C:\\Users\\Jay Tanna\\Desktop\\myNew_File.TIF");

Access restriction: The type Player is not accessible due to restriction on required library C:\Program Files (x86)\Java\jre7\lib\ext\jmf.jar

I'm trying LiveAudioStreaming in java. For livestreming through JMF. I'm getting following error.
Access restriction: The type Player is not accessible due to restriction on required library C:\Program Files (x86)\Java\jre7\lib\ext\jmf.jar.
Please help. I used code from this link
Here is the code:
package com.simpleaudioplayer.simpleaudioplayer;
import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import javax.media.*; // import JMF classes
import javax.swing.JFileChooser;
public class Main {
private Player audioPlayer = null;
public SimpleAudioPlayer(URL url) {
try {
//MediaLocator ml=new MediaLocator(url);
audioPlayer = Manager.createPlayer(url);
} catch (Exception ex) {
System.out.println(ex);
}
}
public SimpleAudioPlayer(File file) throws MalformedURLException {
this(file.toURI().toURL());
}
public void play() {
audioPlayer.start(); // start playing
}
public void stop() {
audioPlayer.stop(); //stop playing
audioPlayer.close();
}
public static void main(String[] args) {
try {
// TODO code application logic here
JFileChooser fc = new JFileChooser();
fc.showOpenDialog(null);
File file = fc.getSelectedFile();
SimpleAduioPlayer sap = new SimpleAduioPlayer(file);
sap.play();
//sap.stop();
} catch (MalformedURLException ex) {
System.out.println(ex);
}
}
}

OpenImaj - face detection - display found faces

I'm using OpenImaj to detect faces in an image.
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.List;
import org.openimaj.image.FImage;
import org.openimaj.image.ImageUtilities;
import org.openimaj.image.MBFImage;
import org.openimaj.image.colour.Transforms;
import org.openimaj.image.processing.face.detection.DetectedFace;
import org.openimaj.image.processing.face.detection.FaceDetector;
import org.openimaj.image.processing.face.detection.HaarCascadeDetector;
public class FaceDetection {
public static void main(String[] args) {
MBFImage image;
try {
image = ImageUtilities.readMBF(new FileInputStream("image.jpg"));
FaceDetector<DetectedFace,FImage> fd = new HaarCascadeDetector(80);
List<DetectedFace> faces = fd. detectFaces (Transforms.calculateIntensity(image));
System.out.println(faces.size());
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
To display an image we can use DisplayUtilities class: DisplayUtilities.display(image);
However the found face is in type DetectedFace.
Do you know how to display the face which is in the DetectedFace type?
Thank you.

In addition to previous answer:
With getFacePatch() you get a face as FImage:
final FImage faceFImage = face.getFacePatch();
Now this faceFImage needs to be converted to BufferedImage:
final BufferedImage bufferedFaceImage = ImageUtilities.createBufferedImage(faceFImage);
Now this bufferedFaceImage can be displayed with:
DisplayUtilities.display(bufferedFaceImage);

You should be able to get an image with getFacePatch().
The documentation is here http://openimaj.org/apidocs/index.html

Tess4j jar file issue

import java.awt.image.RenderedImage;
import java.io.File;
import java.net.URL;
import javax.imageio.ImageIO;
import net.sourceforge.tess4j.Tesseract;
public class Tess4JSample {
public static void main(String[] args) throws Exception{
URL imageURL = new URL("http://s4.postimg.org/e75hcme9p/IMG_20130507_190237.jpg");
RenderedImage img = ImageIO.read(imageURL);
File outputfile = new File("saved.png");
ImageIO.write(img, "png", outputfile);
try {
Tesseract instance = Tesseract.getInstance(); // JNA Interface Mapping
// Tesseract1 instance = new Tesseract1(); // JNA Direct Mapping
String result = instance.doOCR(outputfile);
System.out.println(result);
} catch (Exception e) {
System.err.println(e.getMessage());
}
}
}
for this program I have put the jar files tess4j-1.5.0 and jai_imageio-1.1. But still it shows error
The import net.sourceforge cannot be resolved
Can anyone tell me what is the necessary action needs to be taken care for error resolution? I taken this program from stack overflow itself. Thanks! in advance.