boofcv.abst.filter.binary.GlobalOtsuBinaryFilter Maven / Gradle / Ivy
/*
* Copyright (c) 2011-2016, 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.abst.filter.binary;
import boofcv.alg.filter.binary.GThresholdImageOps;
import boofcv.struct.image.GrayU8;
import boofcv.struct.image.ImageGray;
import boofcv.struct.image.ImageType;
/**
* Computes a threshold using Otsu's equation.
*
* @see GThresholdImageOps#computeOtsu(ImageGray, int, int)
*
* @author Peter Abeles
*/
public class GlobalOtsuBinaryFilter implements InputToBinary {
ImageType inputType;
boolean down;
int minValue;
int maxValue;
/**
* @see GThresholdImageOps#computeOtsu
*/
public GlobalOtsuBinaryFilter(int minValue, int maxValue,
boolean down, ImageType inputType) {
this.minValue = minValue;
this.maxValue = maxValue;
this.down = down;
this.inputType = inputType;
}
@Override
public void process(T input, GrayU8 output) {
double threshold = GThresholdImageOps.computeOtsu(input,minValue,maxValue);
GThresholdImageOps.threshold(input,output,threshold,down);
}
@Override
public int getHorizontalBorder() {
return 0;
}
@Override
public int getVerticalBorder() {
return 0;
}
@Override
public ImageType getInputType() {
return inputType;
}
@Override
public ImageType getOutputType() {
return ImageType.single(GrayU8.class);
}
}