Mega Code Archive
Scale Test
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import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
/*
* ScaleTest_2008.java
*
* Created on May 1, 2007, 4:42 PM
*
* Copyright (c) 2007, Sun Microsystems, Inc
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of the TimingFramework project nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
*
* @author Chet
*/
public class ScaleTest_2008 extends JComponent {
private static final int FULL_SIZE = 190;
private static final int PADDING = 5;
private static final int QUAD_SIZE = FULL_SIZE / 2;
private static final double SCALE_FACTOR = .17;
private static BufferedImage originalImage =
new BufferedImage(FULL_SIZE, FULL_SIZE, BufferedImage.TYPE_INT_RGB);
boolean originalImagePainted = false;
/**
* Paints the test image that will be downscaled and timed by the various
* scaling methods. A different image is rendered into each of the four
* quadrants of this image: RGB stripes, a picture, vector art, and
* a black and white grid.
*/
private void paintOriginalImage() {
Graphics g = originalImage.getGraphics();
// Erase to black
g.setColor(Color.BLACK);
g.fillRect(0, 0, FULL_SIZE, FULL_SIZE);
// RGB quadrant
for (int i = 0; i < QUAD_SIZE; i += 3) {
int x = i;
g.setColor(Color.RED);
g.drawLine(x, 0, x, QUAD_SIZE);
x++;
g.setColor(Color.GREEN);
g.drawLine(x, 0, x, QUAD_SIZE);
x++;
g.setColor(Color.BLUE);
g.drawLine(x, 0, x, QUAD_SIZE);
}
// Picture quadrant
try {
URL url = getClass().getResource("BBGrayscale.png");
BufferedImage picture = ImageIO.read(url);
// Center picture in quadrant area
int xDiff = QUAD_SIZE - picture.getWidth();
int yDiff = QUAD_SIZE - picture.getHeight();
g.drawImage(picture, QUAD_SIZE + xDiff/2, yDiff/2, null);
} catch (Exception e) {
System.out.println("Problem reading image file: " + e);
}
// Vector drawing quadrant
g.setColor(Color.WHITE);
g.fillRect(0, QUAD_SIZE, QUAD_SIZE, QUAD_SIZE);
g.setColor(Color.BLACK);
g.drawOval(2, QUAD_SIZE + 2, QUAD_SIZE-4, QUAD_SIZE-4);
g.drawArc(20, QUAD_SIZE + 20, (QUAD_SIZE - 40), QUAD_SIZE - 40,
190, 160);
int eyeSize = 7;
int eyePos = 30 - (eyeSize / 2);
g.fillOval(eyePos, QUAD_SIZE + eyePos, eyeSize, eyeSize);
g.fillOval(QUAD_SIZE - eyePos - eyeSize, QUAD_SIZE + eyePos,
eyeSize, eyeSize);
// B&W grid
g.setColor(Color.WHITE);
g.fillRect(QUAD_SIZE + 1, QUAD_SIZE + 1, QUAD_SIZE, QUAD_SIZE);
g.setColor(Color.BLACK);
for (int i = 0; i < QUAD_SIZE; i += 4) {
int pos = QUAD_SIZE + i;
g.drawLine(pos, QUAD_SIZE + 1, pos, FULL_SIZE);
g.drawLine(QUAD_SIZE + 1, pos, FULL_SIZE, pos);
}
originalImagePainted = true;
}
/**
* Progressive bilinear scaling: for any downscale size, scale
* iteratively by halves using BILINEAR filtering until the proper
* size is reached.
*/
private BufferedImage getOptimalScalingImage(BufferedImage inputImage,
int startSize, int endSize) {
int currentSize = startSize;
BufferedImage currentImage = inputImage;
int delta = currentSize - endSize;
int nextPow2 = currentSize >> 1;
while (currentSize > 1) {
if (delta <= nextPow2) {
if (currentSize != endSize) {
BufferedImage tmpImage = new BufferedImage(endSize,
endSize, BufferedImage.TYPE_INT_RGB);
Graphics g = tmpImage.getGraphics();
((Graphics2D)g).setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g.drawImage(currentImage, 0, 0, tmpImage.getWidth(),
tmpImage.getHeight(), null);
currentImage = tmpImage;
}
return currentImage;
} else {
BufferedImage tmpImage = new BufferedImage(currentSize >> 1,
currentSize >> 1, BufferedImage.TYPE_INT_RGB);
Graphics g = tmpImage.getGraphics();
((Graphics2D)g).setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g.drawImage(currentImage, 0, 0, tmpImage.getWidth(),
tmpImage.getHeight(), null);
currentImage = tmpImage;
currentSize = currentImage.getWidth();
delta = currentSize - endSize;
nextPow2 = currentSize >> 1;
}
}
return currentImage;
}
/**
* Progressive Bilinear approach: this method gets each scaled version from
* the getOptimalScalingImage method and copies it into place.
*/
private void drawBetterImage(Graphics g, int yLoc) {
int xLoc = 100;
int delta = (int)(SCALE_FACTOR * FULL_SIZE);
for (int scaledSize = FULL_SIZE; scaledSize > 0; scaledSize -= delta) {
Image scaledImage = getOptimalScalingImage(originalImage, FULL_SIZE, scaledSize);
g.drawImage(scaledImage, xLoc, yLoc + (FULL_SIZE - scaledSize)/2,
null);
xLoc += scaledSize + 20;
}
}
/**
* This approach uses either the getScaledInstance() approach to get
* each new size or it scales on the fly using drawImage().
*/
private void drawImage(Graphics g, int yLoc, boolean getScaled) {
int xLoc = 100;
int delta = (int)(SCALE_FACTOR * FULL_SIZE);
if (getScaled) {
for (int scaledSize = FULL_SIZE; scaledSize > 0; scaledSize -= delta) {
Image scaledImage = originalImage.getScaledInstance(scaledSize,
scaledSize, Image.SCALE_AREA_AVERAGING);
g.drawImage(scaledImage, xLoc, yLoc + (FULL_SIZE - scaledSize)/2,
null);
xLoc += scaledSize + 20;
}
} else {
for (int scaledSize = FULL_SIZE; scaledSize > 0; scaledSize -= delta) {
g.drawImage(originalImage, xLoc, yLoc + (FULL_SIZE - scaledSize)/2,
scaledSize, scaledSize, null);
xLoc += scaledSize + 20;
}
}
}
/**
* Scale the image to several smaller sizes using each of the approaches
* and time each series of operations. The times are output into the
* application window for each row that they represent.
*/
protected void paintComponent(Graphics g) {
if (!originalImagePainted) {
paintOriginalImage();
}
long startTime, endTime, totalTime;
int xLoc, yLoc;
// Draw scaled versions with nearest neighbor
xLoc = 5;
yLoc = 20;
startTime = System.nanoTime();
drawImage(g, yLoc, false);
endTime = System.nanoTime();
totalTime = (endTime - startTime) / 1000000;
g.drawString("NEAREST ", xLoc, yLoc + (FULL_SIZE / 2));
g.drawString(Long.toString(totalTime) + " ms",
xLoc, yLoc + (FULL_SIZE / 2) + 15);
System.out.println("NEAREST: " + (endTime - startTime) / 1000000);
// BILINEAR
yLoc += FULL_SIZE + PADDING;
((Graphics2D)g).setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
startTime = System.nanoTime();
drawImage(g, yLoc, false);
endTime = System.nanoTime();
totalTime = (endTime - startTime) / 1000000;
g.drawString("BILINEAR ", xLoc, yLoc + (FULL_SIZE / 2));
g.drawString(Long.toString(totalTime) + " ms",
xLoc, yLoc + (FULL_SIZE / 2) + 15);
System.out.println("BILINEAR: " + (endTime - startTime) / 1000000);
// BIDUBIC
yLoc += FULL_SIZE + PADDING;
((Graphics2D)g).setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BICUBIC);
startTime = System.nanoTime();
drawImage(g, yLoc, false);
endTime = System.nanoTime();
totalTime = (endTime - startTime) / 1000000;
g.drawString("BICUBIC ", xLoc, yLoc + (FULL_SIZE / 2));
g.drawString(Long.toString(totalTime) + " ms",
xLoc, yLoc + (FULL_SIZE / 2) + 15);
System.out.println("BICUBIC: " + (endTime - startTime) / 1000000);
// getScaledInstance()
yLoc += FULL_SIZE + PADDING;
((Graphics2D)g).setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);
startTime = System.nanoTime();
drawImage(g, yLoc, true);
endTime = System.nanoTime();
totalTime = (endTime - startTime) / 1000000;
g.drawString("getScaled ", xLoc, yLoc + (FULL_SIZE / 2));
g.drawString(Long.toString(totalTime) + " ms",
xLoc, yLoc + (FULL_SIZE / 2) + 15);
System.out.println("getScaled: " + (endTime - startTime) / 1000000);
// Progressive Bilinear
yLoc += FULL_SIZE + PADDING;
startTime = System.nanoTime();
drawBetterImage(g, yLoc);
endTime = System.nanoTime();
totalTime = (endTime - startTime) / 1000000;
g.drawString("Progressive ", xLoc, yLoc + (FULL_SIZE / 2));
g.drawString(Long.toString(totalTime) + " ms",
xLoc, yLoc + (FULL_SIZE / 2) + 15);
System.out.println("faster: " + (endTime - startTime) / 1000000);
// Draw image sizes
xLoc = 100;
int delta = (int)(SCALE_FACTOR * FULL_SIZE);
for (int scaledSize = FULL_SIZE; scaledSize > 0; scaledSize -= delta) {
g.drawString(scaledSize + " x " + scaledSize,
xLoc + Math.max(0, scaledSize/2 - 20), 15);
xLoc += scaledSize + 20;
}
}
private static void createAndShowGUI() {
JFrame f = new JFrame();
f.setLayout(new BorderLayout());
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setSize(900, 50 + (5 * FULL_SIZE) + (6 * PADDING));
ScaleTest_2008 test = new ScaleTest_2008();
f.add(test);
f.setVisible(true);
}
public static void main(String args[]) {
Runnable doCreateAndShowGUI = new Runnable() {
public void run() {
createAndShowGUI();
}
};
SwingUtilities.invokeLater(doCreateAndShowGUI);
}
}
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