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/*
* Copyright (c) 2021, Peter Abeles. All Rights Reserved.
*
* This file is part of BoofCV (http://boofcv.org).
*
* 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 boofcv.alg.transform.ii;
import boofcv.struct.ImageRectangle;
/**
* Convolution kernel for an integral image. Note that the bounds in the specified
* rectangle are inclusive. Normally the upper bounds are exclusive.
*
* @author Peter Abeles
*/
@SuppressWarnings({"NullAway.Init"})
public class IntegralKernel {
public ImageRectangle[] blocks;
public int[] scales;
public IntegralKernel( int numBlocks ) {
this.blocks = new ImageRectangle[numBlocks];
this.scales = new int[numBlocks];
for (int i = 0; i < numBlocks; i++) {
blocks[i] = new ImageRectangle();
}
}
public IntegralKernel() {}
public void resizeBlocks( int desired ) {
if (getNumBlocks() == desired)
return;
this.blocks = new ImageRectangle[desired];
this.scales = new int[desired];
for (int i = 0; i < desired; i++) {
blocks[i] = new ImageRectangle();
}
}
public int getNumBlocks() {
return blocks.length;
}
public IntegralKernel copy() {
IntegralKernel ret = new IntegralKernel(blocks.length);
for (int i = 0; i < blocks.length; i++) {
this.blocks[i] = new ImageRectangle(blocks[i]);
this.scales[i] = scales[i];
}
return ret;
}
}
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