本文整理了Java中org.openimaj.io.IOUtils类的一些代码示例，展示了IOUtils类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。IOUtils类的具体详情如下：
包路径：org.openimaj.io.IOUtils
类名称：IOUtils

IOUtils介绍

[英]Methods for reading Readable objects and writing Writeable objects.
[中]读取可读对象和写入可写对象的方法。

代码示例

代码示例来源：origin: openimaj/openimaj

@Override
public void readBinary(DataInput in) throws IOException {
  final LazyFaceRecogniser<FACE, PERSON, EXTRACTOR> wrapper = IOUtils.read(in);
  this.extractor = wrapper.extractor;
  this.faceCache = wrapper.faceCache;
  this.internalRecogniser = wrapper.internalRecogniser;
  this.isInvalid = wrapper.isInvalid;
}

代码示例来源：origin: org.openimaj.tools/GlobalFeaturesTool

void execute() throws IOException {
  FeatureVector fv = featureOp.extract(input);
  
  if (binary)
    IOUtils.writeBinary(output, fv);
  else
    IOUtils.writeASCII(output, fv);
}

代码示例来源：origin: openimaj/openimaj

/**
 * Write this {@link VLADIndexerData} object to the given file. The file can
 * be re-read using the {@link #read(File)} method.
 * 
 * @param file
 *            the file to write to
 * @throws IOException
 *             if an error occurs
 */
public void write(File file) throws IOException {
  IOUtils.writeToFile(this, file);
}

代码示例来源：origin: openimaj/openimaj

private FEATURE write(FEATURE feature, File cachedFeature) throws IOException {
  if (feature instanceof WriteableBinary) {
    IOUtils.writeBinaryFull(cachedFeature, (WriteableBinary) feature);
  } else {
    IOUtils.writeToFile(feature, cachedFeature);
  }
  return feature;
}

代码示例来源：origin: openimaj/openimaj

@SuppressWarnings("unchecked")
private FEATURE load(File cachedFeature) {
  try {
    return (FEATURE) IOUtils.read(cachedFeature);
  } catch (final Exception e) {
    try {
      return (FEATURE) IOUtils.readFromFile(cachedFeature);
    } catch (final IOException e1) {
      logger.warn("Error reading from cache. Feature will be regenerated.");
    }
  }
  return null;
}

代码示例来源：origin: openimaj/openimaj

/**
 * Convenience function for serializing a writeable object as a byte array.
 * Calls {@link IOUtils#writeBinary(OutputStream, WriteableBinary)} on a
 * {@link ByteArrayOutputStream} then calls
 * {@link ByteArrayOutputStream#toByteArray()}
 * 
 * @param object
 * @return serialised object
 * @throws IOException
 */
public static byte[] serialize(WriteableBinary object) throws IOException {
  final ByteArrayOutputStream stream = new ByteArrayOutputStream();
  IOUtils.writeBinary(stream, object);
  return stream.toByteArray();
}

代码示例来源：origin: org.openimaj.hadoop.tools/HadoopTwitterTokenTool

@Override
  protected void reduce(LongWritable key, Iterable<BytesWritable> values,
      Reducer<LongWritable, BytesWritable, LongWritable, BytesWritable>.Context context) throws IOException,
      InterruptedException
  {
    final TweetCountWordMap accum = new TweetCountWordMap();
    for (final BytesWritable tweetwordmapbytes : values) {
      TweetCountWordMap tweetwordmap = null;
      tweetwordmap = IOUtils.read(new ByteArrayInputStream(tweetwordmapbytes.getBytes()),
          TweetCountWordMap.class);
      accum.combine(tweetwordmap);
    }
    final ByteArrayOutputStream outstream = new ByteArrayOutputStream();
    IOUtils.writeBinary(outstream, accum);
    context.write(key, new BytesWritable(outstream.toByteArray()));
  }
}

代码示例来源：origin: openimaj/openimaj

@Override
protected Eigenvalues spectralCluster(SparseMatrix data) {
  Eigenvalues eig = null;
  if(cache.exists()){
    logger.debug("Loading eigenvectors from cache");
    try {
      eig = IOUtils.readFromFile(cache);
    } catch (IOException e) {
      throw new RuntimeException(e);
    }
  }
  else{			
    // Compute the laplacian of the graph
    logger.debug("Cache empty, recreating eigenvectors");
    final SparseMatrix laplacian = laplacian(data);
    eig = laplacianEigenVectors(laplacian);
    try {
      logger.debug("Writing eigenvectors to cache");
      IOUtils.writeToFile(eig, cache);
    } catch (IOException e) {
      throw new RuntimeException(e);
    }
  }
  
  return eig;
}

代码示例来源：origin: openimaj/openimaj

public static void createPQADCNN() throws IOException {
  final File input = new File("/Volumes/My Book/flickr46m-vlad64-pca128-pq16x8-indexer-mirflickr25k-sift1x.dat");
  final DataInputStream dis = new DataInputStream(new BufferedInputStream(new FileInputStream(input)));
  final VLADIndexerData indexer = VLADIndexerData.read(new File(
      "/Users/jsh2/vlad64-pca128-pq16x8-indexer-mirflickr25k-sift1x.dat"));
  final IncrementalFloatADCNearestNeighbours nn = new IncrementalFloatADCNearestNeighbours(
      indexer.getProductQuantiser(), 128,
      46000000);
  final TLongArrayList indexes = new TLongArrayList(46000000);
  try {
    final float[] farr = new float[128];
    for (int x = 0;; x++) {
      if (x % 100000 == 0)
        System.out.println(x);
      final long id = dis.readLong();
      for (int i = 0; i < 128; i++) {
        farr[i] = dis.readFloat();
      }
      nn.add(farr);
      indexes.add(id);
    }
  } catch (final EOFException e) {
    dis.close();
  }
  IOUtils.writeBinary(new File(
      "/Volumes/My Book/flickr46m-vlad64-pca128-pq16x8-indexer-mirflickr25k-sift1x-pqadcnn.dat"), nn);
  IOUtils.writeToFile(indexes, new File(
      "/Volumes/My Book/flickr46m-vlad64-pca128-pq16x8-indexer-mirflickr25k-sift1x-pqadcnn-indexes.dat"));
}

代码示例来源：origin: org.openimaj.hadoop.tools/HadoopTwitterTokenTool

@Override
public String toString() {
  StringWriter writer = new StringWriter();
  try {
    IOUtils.writeASCII(writer, this);
  } catch (IOException e) {
    return "ERRORSTRING";
  }
  return writer.toString();
}

代码示例来源：origin: openimaj/openimaj

@Override
public void writeBinary(DataOutput out) throws IOException {
  IOUtils.write(comp, out);
}

代码示例来源：origin: openimaj/openimaj

@Override
  protected void reduce(Text word, java.lang.Iterable<BytesWritable> dfidfs, Reducer<Text,BytesWritable,NullWritable,Text>.Context context) throws java.io.IOException ,InterruptedException {
    WordDFIDFTimeSeries dts = new WordDFIDFTimeSeries();
    for (BytesWritable bytesWritable : dfidfs) {
      WordDFIDF wd = IOUtils.deserialize(bytesWritable.getBytes(), WordDFIDF.class);
      dts.add(wd.timeperiod, wd);
    }
    StringWriter writer = new StringWriter();
    writer.write(word + " ");
    IOUtils.writeASCII(writer, dts);
    context.write(NullWritable.get(), new Text(writer .toString()));
  };
}

代码示例来源：origin: openimaj/openimaj

/**
 * Read a {@link VLADIndexerData} object to the given file created with the
 * {@link #write(File)} method.
 * 
 * @param file
 *            the file to read from
 * @return the newly read {@link VLADIndexerData} object.
 * @throws IOException
 *             if an error occurs
 */
public static VLADIndexerData read(File file) throws IOException {
  return IOUtils.readFromFile(file);
}

代码示例来源：origin: openimaj/openimaj

private void replaceSequenceFileWithCluster(String sequenceFile, ByteCentroidsResult cluster) throws IOException {
  final Path p = new Path(sequenceFile);
  final FileSystem fs = HadoopFastKMeansOptions.getFileSystem(p.toUri());
  fs.delete(p, true); // Delete the sequence file of this name
  FSDataOutputStream stream = null;
  try {
    stream = fs.create(p);
    IOUtils.writeBinary(stream, cluster); // Write the cluster
  } finally {
    if (stream != null)
      stream.close();
  }
}

代码示例来源：origin: openimaj/openimaj

@Override
  protected void reduce(LongWritable key, Iterable<BytesWritable> values,
      Reducer<LongWritable, BytesWritable, LongWritable, BytesWritable>.Context context) throws IOException,
      InterruptedException
  {
    final TweetCountWordMap accum = new TweetCountWordMap();
    for (final BytesWritable tweetwordmapbytes : values) {
      TweetCountWordMap tweetwordmap = null;
      tweetwordmap = IOUtils.read(new ByteArrayInputStream(tweetwordmapbytes.getBytes()),
          TweetCountWordMap.class);
      accum.combine(tweetwordmap);
    }
    final ByteArrayOutputStream outstream = new ByteArrayOutputStream();
    IOUtils.writeBinary(outstream, accum);
    context.write(key, new BytesWritable(outstream.toByteArray()));
  }
}

代码示例来源：origin: openimaj/openimaj

final MixtureOfGaussians gmm = IOUtils.readFromFile(new File(
    "/Volumes/Raid/face_databases/lfw-centre-affine-pdsift-pca64-augm-gmm512.bin"));
final FisherVector<float[]> fisher = new FisherVector<float[]>(gmm, true, true);
IOUtils.writeToFile(fisher, new File(
    "/Volumes/Raid/face_databases/lfw-centre-affine-pdsift-pca64-augm-gmm512-fisher.bin"));

代码示例来源：origin: org.openimaj/core-feature

@SuppressWarnings("unchecked")
private FEATURE load(File cachedFeature) {
  try {
    return (FEATURE) IOUtils.read(cachedFeature);
  } catch (final Exception e) {
    try {
      return (FEATURE) IOUtils.readFromFile(cachedFeature);
    } catch (final IOException e1) {
      logger.warn("Error reading from cache. Feature will be regenerated.");
    }
  }
  return null;
}

代码示例来源：origin: org.openimaj/sandbox

public static void createPQADCNN() throws IOException {
  final File input = new File("/Volumes/My Book/flickr46m-vlad64-pca128-pq16x8-indexer-mirflickr25k-sift1x.dat");
  final DataInputStream dis = new DataInputStream(new BufferedInputStream(new FileInputStream(input)));
  final VLADIndexerData indexer = VLADIndexerData.read(new File(
      "/Users/jsh2/vlad64-pca128-pq16x8-indexer-mirflickr25k-sift1x.dat"));
  final IncrementalFloatADCNearestNeighbours nn = new IncrementalFloatADCNearestNeighbours(
      indexer.getProductQuantiser(), 128,
      46000000);
  final TLongArrayList indexes = new TLongArrayList(46000000);
  try {
    final float[] farr = new float[128];
    for (int x = 0;; x++) {
      if (x % 100000 == 0)
        System.out.println(x);
      final long id = dis.readLong();
      for (int i = 0; i < 128; i++) {
        farr[i] = dis.readFloat();
      }
      nn.add(farr);
      indexes.add(id);
    }
  } catch (final EOFException e) {
    dis.close();
  }
  IOUtils.writeBinary(new File(
      "/Volumes/My Book/flickr46m-vlad64-pca128-pq16x8-indexer-mirflickr25k-sift1x-pqadcnn.dat"), nn);
  IOUtils.writeToFile(indexes, new File(
      "/Volumes/My Book/flickr46m-vlad64-pca128-pq16x8-indexer-mirflickr25k-sift1x-pqadcnn-indexes.dat"));
}

代码示例来源：origin: openimaj/openimaj

@Override
public String toString() {
  StringWriter writer = new StringWriter();
  try {
    IOUtils.writeASCII(writer, this);
  } catch (IOException e) {
    return "ERRORSTRING";
  }
  return writer.toString();
}

代码示例来源：origin: openimaj/openimaj

@Override
public void writeBinary(DataOutput out) throws IOException {
  IOUtils.write(config, out);
}