boofcv.gui.tracker.TldTemplatePanel Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of visualize Show documentation
BoofCV is an open source Java library for real-time computer vision and robotics applications.
The newest version!
/*
 * 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.gui.tracker;

import boofcv.struct.feature.NccFeature;

import javax.swing.*;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.List;
import java.util.Stack;

/**
 * @author Peter Abeles
 */
public class TldTemplatePanel extends JPanel {

	int featureWidth;

	int scale = 2;

	List templates = new ArrayList<>();

	Stack unused = new Stack<>();

	public TldTemplatePanel(int featureWidth) {
		this.featureWidth = featureWidth;
		setAutoscrolls(true);

		setPreferredSize(new Dimension(featureWidth*scale,30));
		setMinimumSize(getPreferredSize());
	}

	public synchronized void update( List features , boolean gray ) {

		unused.addAll(templates);
		templates.clear();

		for( NccFeature f : features ) {
			BufferedImage img;
			if( unused.isEmpty() ) {
				img = new BufferedImage(featureWidth,featureWidth,BufferedImage.TYPE_INT_RGB);
			} else {
				img = unused.pop();
			}
			templates.add(img);

			int index = 0;
			int rgb;

			if( gray ) {
				for( int y = 0; y < featureWidth; y++ ) {
					for( int x = 0; x < featureWidth; x++ ) {
						int v = (int)(f.value[ index++ ] + f.mean);
						rgb = v << 16 | v << 8 | v;

						img.setRGB(x,y,rgb);
					}
				}
			} else {
				double maxAbs = 0;
				for( int i = 0; i < f.value.length; i++ ) {
					double v = Math.abs(f.value[i]);
					if( v > maxAbs )
						maxAbs = v;
				}
				if( maxAbs == 0 )
					continue;
				for( int y = 0; y < featureWidth; y++ ) {
					for( int x = 0; x < featureWidth; x++ ) {
						int v = (int)(255.0*f.value[ index++ ]/maxAbs);
						if( v < 0 )
							rgb = -v;
						else
							rgb = v << 16;

						img.setRGB(x,y,rgb);
					}
				}
			}
		}

		setPreferredSize(new Dimension(featureWidth*scale,featureWidth*features.size()*scale));
		setMinimumSize(getPreferredSize());
		revalidate();
	}

	@Override
	protected synchronized void paintComponent(Graphics g) {
		super.paintComponent(g);
		Graphics2D g2 = (Graphics2D)g;

		g2.scale(scale,scale);

		for( int i = 0; i < templates.size(); i++ ) {
			int y = i * featureWidth;
			g2.drawImage(templates.get(i),0,y,featureWidth,featureWidth,null);
		}
	}
}