org.nd4j.linalg.api.ops.impl.image.ImageResize Maven / Gradle / Ivy
/*
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* * 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.
* *
* * See the NOTICE file distributed with this work for additional
* * information regarding copyright ownership.
* * 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
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* * SPDX-License-Identifier: Apache-2.0
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package org.nd4j.linalg.api.ops.impl.image;
import lombok.NoArgsConstructor;
import lombok.NonNull;
import org.nd4j.autodiff.samediff.SDVariable;
import org.nd4j.autodiff.samediff.SameDiff;
import org.nd4j.common.base.Preconditions;
import org.nd4j.enums.ImageResizeMethod;
import org.nd4j.linalg.api.buffer.DataType;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.api.ops.DynamicCustomOp;
import java.util.Collections;
import java.util.List;
@NoArgsConstructor
public class ImageResize extends DynamicCustomOp {
@Override
public String opName() {
return "image_resize";
}
public ImageResize(@NonNull SameDiff sameDiff, @NonNull SDVariable in, @NonNull SDVariable size, boolean preserveAspectRatio, boolean antialias, ImageResizeMethod method) {
super("image_resize", sameDiff, new SDVariable[]{in, size});
addBArgument(preserveAspectRatio, antialias);
addIArgument(method.ordinal());
}
public ImageResize(@NonNull INDArray in, @NonNull INDArray size, boolean preserveAspectRatio, boolean antialias, ImageResizeMethod method) {
super("image_resize", new INDArray[]{in, size}, null);
Preconditions.checkArgument(in.rank()==4,"expected input message in NHWC format i.e [batchSize, height, width, channels]");
addBArgument(preserveAspectRatio, antialias);
addIArgument(method.ordinal());
}
@Override
public List calculateOutputDataTypes(List dataTypes) {
Preconditions
.checkArgument(dataTypes != null && dataTypes.size() == 2, "Expected exactly 2 input datatypes, got %s", dataTypes);
Preconditions.checkArgument(dataTypes.get(0).isFPType(), "Input datatype must be floating point, got %s", dataTypes);
return Collections.singletonList(dataTypes.get(0));
}
}