org.nd4j.linalg.api.ops.impl.image.ExtractImagePatches Maven / Gradle / Ivy
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* * terms of the Apache License, Version 2.0 which is available at
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* * information regarding copyright ownership.
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package org.nd4j.linalg.api.ops.impl.image;
import lombok.NonNull;
import org.nd4j.autodiff.samediff.SDVariable;
import org.nd4j.autodiff.samediff.SameDiff;
import org.nd4j.common.base.Preconditions;
import org.nd4j.linalg.api.buffer.DataType;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.api.ops.DynamicCustomOp;
import org.tensorflow.framework.AttrValue;
import org.tensorflow.framework.GraphDef;
import org.tensorflow.framework.NodeDef;
import java.util.Collections;
import java.util.List;
import java.util.Map;
public class ExtractImagePatches extends DynamicCustomOp {
private int[] kSizes;
private int[] strides;
private int[] rates;
private boolean isSameMode;
public ExtractImagePatches(){ }
public ExtractImagePatches(@NonNull SameDiff samediff, @NonNull SDVariable input,
int kH, int kW, int sH, int sW, int rH, int rW,
boolean sameMode) {
this(samediff, input, new int[]{kH, kW}, new int[]{sH, sW}, new int[]{rH,rW}, sameMode);
}
public ExtractImagePatches(@NonNull SameDiff samediff, @NonNull SDVariable input, @NonNull int[] kSizes,
@NonNull int[] strides, @NonNull int[] rates, boolean sameMode){
super(samediff, input);
Preconditions.checkState(kSizes.length == 2, "Expected exactly 2 kernel sizes, got %s", kSizes);
Preconditions.checkState(strides.length == 2, "Expected exactly 2 strides, got %s", strides);
Preconditions.checkState(rates.length == 2, "Expected exactly 2 rate values, got %s", rates);
this.kSizes = kSizes;
this.strides = strides;
this.rates = rates;
this.isSameMode = sameMode;
addArgs();
}
public ExtractImagePatches(@NonNull INDArray input, @NonNull int[] kSizes,
@NonNull int[] strides, @NonNull int[] rates, boolean sameMode){
super(new INDArray[]{input}, null);
Preconditions.checkState(kSizes.length == 2, "Expected exactly 2 kernel sizes, got %s", kSizes);
Preconditions.checkState(strides.length == 2, "Expected exactly 2 strides, got %s", strides);
Preconditions.checkState(rates.length == 2, "Expected exactly 2 rate values, got %s", rates);
this.kSizes = kSizes;
this.strides = strides;
this.rates = rates;
this.isSameMode = sameMode;
addArgs();
}
public ExtractImagePatches(INDArray input, int kH, int kW, int sH, int sW, int rH, int rW, boolean sameMode) {
this(input, new int[]{kH, kW}, new int[]{sH, sW}, new int[]{rH, rW}, sameMode);
}
@Override
public String opName() {
return "extract_image_patches";
}
@Override
public String tensorflowName() {
return "ExtractImagePatches";
}
@Override
public void initFromTensorFlow(NodeDef nodeDef, SameDiff initWith, Map attributesForNode, GraphDef graph) {
//TF includes redundant leading and training 1s for kSizes, strides, rates (positions 0/3)
kSizes = parseIntList(attributesForNode.get("ksizes").getList());
strides = parseIntList(attributesForNode.get("strides").getList());
rates = parseIntList(attributesForNode.get("rates").getList());
String s = attributesForNode.get("padding").getS().toStringUtf8();
isSameMode = s.equalsIgnoreCase("SAME");
addArgs();
}
protected void addArgs() {
iArguments.clear();
addIArgument(kSizes);
addIArgument(strides);
addIArgument(rates);
addIArgument(isSameMode ? 1 : 0);
addIArgument();
}
@Override
public List doDiff(List f1) {
throw new UnsupportedOperationException();
}
@Override
public int getNumOutputs(){
return 1;
}
private static int[] parseIntList(AttrValue.ListValue ilist){
//TF includes redundant leading and training 1s for kSizes, strides, rates (positions 0/3)
return new int[]{(int)ilist.getI(1), (int)ilist.getI(2)};
}
@Override
public List calculateOutputDataTypes(List inputDataTypes){
Preconditions.checkState(inputDataTypes != null && inputDataTypes.size() == 1, "Expected exactly 1 input datatypes for %s, got %s", getClass(), inputDataTypes);
return Collections.singletonList(inputDataTypes.get(0));
}
}