ai.djl.modality.cv.transform.CenterCrop Maven / Gradle / Ivy
/*
* Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance
* with the License. A copy of the License is located at
*
* http://aws.amazon.com/apache2.0/
*
* or in the "license" file accompanying this file. This file 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 ai.djl.modality.cv.transform;
import ai.djl.modality.cv.util.NDImageUtils;
import ai.djl.ndarray.NDArray;
import ai.djl.translate.Transform;
/** A {@link Transform} that crops the center of an image. */
public class CenterCrop implements Transform {
private int width;
private int height;
/**
* Creates a {@code CenterCrop} {@link Transform} that crops to size {@code min(width, height)}.
*/
public CenterCrop() {
width = -1;
height = -1;
}
/**
* Creates a {@code CenterCrop} {@link Transform} that crops the given width and height.
*
* @param width the desired width of the cropped image
* @param height the desired height of the cropped image
*/
public CenterCrop(int width, int height) {
this.width = width;
this.height = height;
}
/** {@inheritDoc} */
@Override
public NDArray transform(NDArray array) {
if (width < 0) {
return NDImageUtils.centerCrop(array);
}
return NDImageUtils.centerCrop(array, width, height);
}
}