org.nd4j.linalg.convolution.BaseConvolution Maven / Gradle / Ivy
/*
*
* * Copyright 2015 Skymind,Inc.
* *
* * Licensed under the Apache License, Version 2.0 (the "License");
* * you may not use this file except in compliance with the License.
* * You may obtain a copy of the License at
* *
* * http://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.
*
*
*/
package org.nd4j.linalg.convolution;
import org.nd4j.linalg.api.complex.IComplexNDArray;
import org.nd4j.linalg.api.ndarray.INDArray;
import org.nd4j.linalg.util.ArrayUtil;
/**
* Base convolution implementation
*
* @author Adam Gibson
*/
public abstract class BaseConvolution implements ConvolutionInstance {
/**
* 2d convolution (aka the last 2 dimensions
*
* @param input the input to op
* @param kernel the kernel to convolve with
* @param type
* @return
*/
@Override
public INDArray conv2d(INDArray input, INDArray kernel, Convolution.Type type) {
int[] axes = input.shape().length < 2 ? ArrayUtil.range(0, 1) : ArrayUtil.range(input.shape().length - 2, input.shape().length);
return convn(input, kernel, type, axes);
}
@Override
public INDArray conv2d(IComplexNDArray input, IComplexNDArray kernel, Convolution.Type type) {
int[] axes = input.shape().length < 2 ? ArrayUtil.range(0, 1) : ArrayUtil.range(input.shape().length - 2, input.shape().length);
return convn(input, kernel, type, axes);
}
/**
* ND Convolution
*
* @param input the input to transform
* @param kernel the kernel to transform with
* @param type the type of convolution
* @return the convolution of the given input and kernel
*/
@Override
public INDArray convn(INDArray input, INDArray kernel, Convolution.Type type) {
return convn(input, kernel, type, ArrayUtil.range(0, input.shape().length));
}
/**
* ND Convolution
*
* @param input the input to transform
* @param kernel the kernel to transform with
* @param type the type of convolution
* @return the convolution of the given input and kernel
*/
@Override
public IComplexNDArray convn(IComplexNDArray input, IComplexNDArray kernel, Convolution.Type type) {
return convn(input, kernel, type, ArrayUtil.range(0, input.shape().length));
}
}