org.nd4j.linalg.api.ops.impl.layers.convolution.Upsampling2d Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2015-2018 Skymind, Inc.
*
* This program and the accompanying materials are made available under the
* terms of the Apache License, Version 2.0 which is available at
* https://www.apache.org/licenses/LICENSE-2.0.
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
* SPDX-License-Identifier: Apache-2.0
******************************************************************************/
package org.nd4j.linalg.api.ops.impl.layers.convolution;
import lombok.Getter;
import lombok.extern.slf4j.Slf4j;
import org.nd4j.autodiff.samediff.SDVariable;
import org.nd4j.autodiff.samediff.SameDiff;
import org.nd4j.base.Preconditions;
import org.nd4j.imports.NoOpNameFoundException;
import org.nd4j.linalg.api.buffer.DataType;
import org.nd4j.linalg.api.ops.DynamicCustomOp;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
/**
* Upsampling operation
*/
@Slf4j
@Getter
public class Upsampling2d extends DynamicCustomOp {
protected boolean nchw;
protected int scaleH;
protected int scaleW;
public Upsampling2d(SameDiff sameDiff, SDVariable input, boolean nchw, int scaleH, int scaleW) {
super(null,sameDiff, new SDVariable[]{input});
this.nchw = nchw;
this.scaleH = scaleH;
this.scaleW = scaleW;
addIArgument(scaleH);
addIArgument(scaleW);
addIArgument(nchw ? 1 : 0);
}
public Upsampling2d() {}
@Override
public String opName() {
return "upsampling2d";
}
@Override
public String onnxName() {
throw new NoOpNameFoundException("No onnx op opName found for " + opName());
}
@Override
public String tensorflowName() {
throw new NoOpNameFoundException("No tensorflow op opName found for " + opName());
}
@Override
public List doDiff(List f1) {
return Collections.singletonList(f().upsampling2dBp(arg(), f1.get(0), nchw, scaleH, scaleW));
}
@Override
public List calculateOutputDataTypes(List inputDataTypes){
Preconditions.checkState(inputDataTypes != null && inputDataTypes.size() == 1, "Expected 1 input data type for %s, got %s", getClass(), inputDataTypes);
return Collections.singletonList(inputDataTypes.get(0));
}
}