/**
* NanoDoA - File based document archive
*
* Copyright (C) 2011-2012 Christian Packenius, christian.packenius@googlemail.com
*
* 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
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package de.chris_soft.utilities;
import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.List;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.NotFoundException;
import com.google.zxing.Result;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.multi.GenericMultipleBarcodeReader;
/**
* Read barcodes via ZXing 1.7.
* @author Christian Packenius.
*/
public class BarcodeReader {
/**
* Get all recognizable barcodes from image.
* @param image Image to search for barcodes.
* @return List of Strings (maybe empty).
*/
public static List<String> getBarcodesAsStringList(BufferedImage image) {
List<String> list = new ArrayList<String>();
Result[] results = getBarcodeResults(image);
if (results != null) {
for (Result result : results) {
list.add(result.getText());
}
}
return list;
}
/**
* Returns all Result objects from barcode recognition of the given image.
* @param image Buffered image for barcode recognition.
* @return Results array.
*/
public static Result[] getBarcodeResults(BufferedImage image) {
LuminanceSource source = new BufferedImageLuminanceSource(image);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
Result[] results = null;
try {
MultiFormatReader multiFormatReader = new MultiFormatReader();
// Result result = multiFormatReader.decode(bitmap, hints);
GenericMultipleBarcodeReader reader = new GenericMultipleBarcodeReader(multiFormatReader);
results = reader.decodeMultiple(bitmap, hints);
}
catch (NotFoundException exception) {
// Ignore.
}
return results;
}
}