public Result decode(BinaryBitmap image, Hashtable hints)
throws NotFoundException, ChecksumException, FormatException {
DecoderResult decoderResult;
ResultPoint[] points;
if (hints != null && hints.containsKey(DecodeHintType.PURE_BARCODE)) {
BitMatrix bits = extractPureBits(image.getBlackMatrix());
decoderResult = decoder.decode(bits);
points = NO_POINTS;
} else {
DetectorResult detectorResult = new Detector(image.getBlackMatrix()).detect();
decoderResult = decoder.decode(detectorResult.getBits());
points = detectorResult.getPoints();
}
Result result =
new Result(
decoderResult.getText(),
decoderResult.getRawBytes(),
points,
BarcodeFormat.DATA_MATRIX);
if (decoderResult.getByteSegments() != null) {
result.putMetadata(ResultMetadataType.BYTE_SEGMENTS, decoderResult.getByteSegments());
}
if (decoderResult.getECLevel() != null) {
result.putMetadata(
ResultMetadataType.ERROR_CORRECTION_LEVEL, decoderResult.getECLevel().toString());
}
return result;
}
@Override
public Result decode(BinaryBitmap image, Map<DecodeHintType, ?> hints)
throws NotFoundException, ChecksumException, FormatException {
DecoderResult decoderResult;
ResultPoint[] points;
if (hints != null && hints.containsKey(DecodeHintType.PURE_BARCODE)) {
BitMatrix bits = extractPureBits(image.getBlackMatrix());
decoderResult = decoder.decode(bits, hints);
points = NO_POINTS;
} else {
DetectorResult detectorResult = new Detector(image.getBlackMatrix()).detect(hints);
decoderResult = decoder.decode(detectorResult.getBits(), hints);
points = detectorResult.getPoints();
}
Result result =
new Result(
decoderResult.getText(), decoderResult.getRawBytes(), points, BarcodeFormat.QR_CODE);
List<byte[]> byteSegments = decoderResult.getByteSegments();
if (byteSegments != null) {
result.putMetadata(ResultMetadataType.BYTE_SEGMENTS, byteSegments);
}
String ecLevel = decoderResult.getECLevel();
if (ecLevel != null) {
result.putMetadata(ResultMetadataType.ERROR_CORRECTION_LEVEL, ecLevel);
}
return result;
}
private static void assertCorrectImage2string(String path, String expected)
throws IOException, NotFoundException {
File file = new File(path);
if (!file.exists()) {
// Support running from project root too
file = new File("core", path);
}
BufferedImage image = ImageIO.read(file);
BinaryBitmap binaryMap =
new BinaryBitmap(new GlobalHistogramBinarizer(new BufferedImageLuminanceSource(image)));
int rowNumber = binaryMap.getHeight() / 2;
BitArray row = binaryMap.getBlackRow(rowNumber, null);
Result result;
try {
RSSExpandedReader rssExpandedReader = new RSSExpandedReader();
result = rssExpandedReader.decodeRow(rowNumber, row, null);
} catch (ReaderException re) {
fail(re.toString());
return;
}
assertSame(BarcodeFormat.RSS_EXPANDED, result.getBarcodeFormat());
assertEquals(expected, result.getText());
}
@Override
public final Result decode(BinaryBitmap image, Map<DecodeHintType, ?> hints)
throws NotFoundException, ChecksumException, FormatException {
DecoderResult decoderResult;
ResultPoint[] points;
if (hints != null && hints.containsKey(DecodeHintType.PURE_BARCODE)) {
BitMatrix bits = extractPureBits(image.getBlackMatrix());
decoderResult = decoder.decode(bits, hints);
points = NO_POINTS;
} else {
DetectorResult detectorResult = new Detector(image.getBlackMatrix()).detect(hints);
decoderResult = decoder.decode(detectorResult.getBits(), hints);
points = detectorResult.getPoints();
}
// If the code was mirrored: swap the bottom-left and the top-right
// points.
if (decoderResult.getOther() instanceof QRCodeDecoderMetaData) {
((QRCodeDecoderMetaData) decoderResult.getOther()).applyMirroredCorrection(points);
}
Result result =
new Result(
decoderResult.getText(), decoderResult.getRawBytes(), points, BarcodeFormat.QR_CODE);
List<byte[]> byteSegments = decoderResult.getByteSegments();
if (byteSegments != null) {
result.putMetadata(ResultMetadataType.BYTE_SEGMENTS, byteSegments);
}
String ecLevel = decoderResult.getECLevel();
if (ecLevel != null) {
result.putMetadata(ResultMetadataType.ERROR_CORRECTION_LEVEL, ecLevel);
}
if (decoderResult.hasStructuredAppend()) {
result.putMetadata(
ResultMetadataType.STRUCTURED_APPEND_SEQUENCE,
decoderResult.getStructuredAppendSequenceNumber());
result.putMetadata(
ResultMetadataType.STRUCTURED_APPEND_PARITY, decoderResult.getStructuredAppendParity());
}
return result;
}
public final Result decode(BinaryBitmap binarybitmap, Map map)
throws NotFoundException, ChecksumException, FormatException {
java.util.List list;
if (map != null && map.containsKey(DecodeHintType.PURE_BARCODE)) {
binarybitmap = extractPureBits(binarybitmap.getBlackMatrix());
binarybitmap = decoder.decode(binarybitmap);
map = NO_POINTS;
} else {
map = (new Detector(binarybitmap.getBlackMatrix())).detect();
binarybitmap = decoder.decode(map.getBits());
map = map.getPoints();
}
map =
new Result(
binarybitmap.getText(), binarybitmap.getRawBytes(), map, BarcodeFormat.DATA_MATRIX);
list = binarybitmap.getByteSegments();
if (list != null) {
map.putMetadata(ResultMetadataType.BYTE_SEGMENTS, list);
}
binarybitmap = binarybitmap.getECLevel();
if (binarybitmap != null) {
map.putMetadata(ResultMetadataType.ERROR_CORRECTION_LEVEL, binarybitmap);
}
return map;
}
// @Override
public Result decode(BinaryBitmap image, Hashtable hints)
throws NotFoundException, ChecksumException, FormatException {
int width = image.getWidth();
int height = image.getHeight();
int halfWidth = width / 2;
int halfHeight = height / 2;
BinaryBitmap topLeft = image.crop(0, 0, halfWidth, halfHeight);
try {
return delegate.decode(topLeft, hints);
} catch (NotFoundException re) {
// continue
}
BinaryBitmap topRight = image.crop(halfWidth, 0, halfWidth, halfHeight);
try {
return delegate.decode(topRight, hints);
} catch (NotFoundException re) {
// continue
}
BinaryBitmap bottomLeft = image.crop(0, halfHeight, halfWidth, halfHeight);
try {
return delegate.decode(bottomLeft, hints);
} catch (NotFoundException re) {
// continue
}
BinaryBitmap bottomRight = image.crop(halfWidth, halfHeight, halfWidth, halfHeight);
try {
return delegate.decode(bottomRight, hints);
} catch (NotFoundException re) {
// continue
}
int quarterWidth = halfWidth / 2;
int quarterHeight = halfHeight / 2;
BinaryBitmap center = image.crop(quarterWidth, quarterHeight, halfWidth, halfHeight);
return delegate.decode(center, hints);
}
/**
* Detects a PDF417 Code in an image. Only checks 0 and 180 degree rotations.
*
* @param hints optional hints to detector
* @return {@link DetectorResult} encapsulating results of detecting a PDF417 Code
* @throws NotFoundException if no PDF417 Code can be found
*/
public DetectorResult detect(Hashtable<?, ?> hints) throws NotFoundException {
// Fetch the 1 bit matrix once up front.
BitMatrix matrix = image.getBlackMatrix();
// Try to find the vertices assuming the image is upright.
ResultPoint[] vertices = findVertices(matrix);
if (vertices == null) {
// Maybe the image is rotated 180 degrees?
vertices = findVertices180(matrix);
if (vertices != null) {
correctCodeWordVertices(vertices, true);
}
} else {
correctCodeWordVertices(vertices, false);
}
if (vertices == null) {
throw NotFoundException.getNotFoundInstance();
}
float moduleWidth = computeModuleWidth(vertices);
if (moduleWidth < 1.0f) {
throw NotFoundException.getNotFoundInstance();
}
int dimension =
computeDimension(vertices[4], vertices[6], vertices[5], vertices[7], moduleWidth);
if (dimension < 1) {
throw NotFoundException.getNotFoundInstance();
}
// Deskew and sample image.
BitMatrix bits =
sampleGrid(matrix, vertices[4], vertices[5], vertices[6], vertices[7], dimension);
return new DetectorResult(
bits, new ResultPoint[] {vertices[4], vertices[5], vertices[6], vertices[7]});
}
@SuppressWarnings("unchecked")
private void doDecodeMultiple(
BinaryBitmap image,
@SuppressWarnings("rawtypes") Hashtable hints,
@SuppressWarnings("rawtypes") Vector results,
int xOffset,
int yOffset) {
Result result;
try {
result = delegate.decode(image, hints);
} catch (ReaderException re) {
return;
}
boolean alreadyFound = false;
for (int i = 0; i < results.size(); i++) {
Result existingResult = (Result) results.elementAt(i);
if (existingResult.getText().equals(result.getText())) {
alreadyFound = true;
break;
}
}
if (alreadyFound) {
return;
}
results.addElement(translateResultPoints(result, xOffset, yOffset));
ResultPoint[] resultPoints = result.getResultPoints();
if (resultPoints == null || resultPoints.length == 0) {
return;
}
int width = image.getWidth();
int height = image.getHeight();
float minX = width;
float minY = height;
float maxX = 0.0f;
float maxY = 0.0f;
for (int i = 0; i < resultPoints.length; i++) {
ResultPoint point = resultPoints[i];
float x = point.getX();
float y = point.getY();
if (x < minX) {
minX = x;
}
if (y < minY) {
minY = y;
}
if (x > maxX) {
maxX = x;
}
if (y > maxY) {
maxY = y;
}
}
// Decode left of barcode
if (minX > MIN_DIMENSION_TO_RECUR) {
doDecodeMultiple(image.crop(0, 0, (int) minX, height), hints, results, xOffset, yOffset);
}
// Decode above barcode
if (minY > MIN_DIMENSION_TO_RECUR) {
doDecodeMultiple(image.crop(0, 0, width, (int) minY), hints, results, xOffset, yOffset);
}
// Decode right of barcode
if (maxX < width - MIN_DIMENSION_TO_RECUR) {
doDecodeMultiple(
image.crop((int) maxX, 0, width - (int) maxX, height),
hints,
results,
xOffset + (int) maxX,
yOffset);
}
// Decode below barcode
if (maxY < height - MIN_DIMENSION_TO_RECUR) {
doDecodeMultiple(
image.crop(0, (int) maxY, width, height - (int) maxY),
hints,
results,
xOffset,
yOffset + (int) maxY);
}
}