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ImageFeaturesRecordReader.java
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ImageFeaturesRecordReader.java
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package org.genericsystem.cv.nn;
import java.io.File;
import java.util.List;
import org.datavec.api.io.labels.ParentPathLabelGenerator;
import org.datavec.api.util.ndarray.RecordConverter;
import org.datavec.api.writable.Writable;
import org.datavec.image.recordreader.BaseImageRecordReader;
import org.genericsystem.cv.Img;
import org.genericsystem.cv.utils.NativeLibraryLoader;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.factory.Nd4j;
import org.opencv.core.Mat;
import org.opencv.core.Size;
public class ImageFeaturesRecordReader extends BaseImageRecordReader {
static {
NativeLibraryLoader.load();
}
private static final long serialVersionUID = 4031311017700609257L;
public ImageFeaturesRecordReader(int height, int width, int channels, ParentPathLabelGenerator labelMaker, Mat vocabulary) {
super(height, width, channels, labelMaker);
}
@Override
public boolean batchesSupported() {
return false;
}
@Override
public List<Writable> next() {
if (iter != null) {
List<Writable> ret;
File image = iter.next();
currentFile = image;
if (image.isDirectory())
return next();
try {
invokeListeners(image);
try (Img img0 = new Img(image.toString());
Img img = img0.resize(new Size(width, height))) {
INDArray row = Nd4j.create(img.getHogDescriptor().toArray());
ret = RecordConverter.toRecord(row);
}
} catch (Exception e) {
throw new RuntimeException(e);
}
return ret;
} else if (record != null) {
hitImage = true;
invokeListeners(record);
return record;
}
throw new IllegalStateException("No more elements");
}
}