Samplerpublic class Sampler extends Frame
| Fields Summary |
|---|
| private Frame | mImageFrame | | private SplitImageComponent | mSplitImageComponent | | private Hashtable | mOps |
| Constructors Summary |
|---|
public Sampler(String imageFile)
super("Sampler v1.0");
createOps();
createImageFrame(imageFile);
createUI();
setVisible(true);
|
| Methods Summary |
|---|
| private void | createColorOps()
mOps.put("Grayscale", new ColorConvertOp(
ColorSpace.getInstance(ColorSpace.CS_GRAY), null));
| | private void | createConvolutions()
float ninth = 1.0f / 9.0f;
float[] blurKernel = {
ninth, ninth, ninth,
ninth, ninth, ninth,
ninth, ninth, ninth
};
mOps.put("Blur", new ConvolveOp(
new Kernel(3, 3, blurKernel),
ConvolveOp.EDGE_NO_OP, null));
float[] edge = {
0f, -1f, 0f,
-1f, 4f, -1f,
0f, -1f, 0f
};
mOps.put("Edge detector", new ConvolveOp(
new Kernel(3, 3, edge),
ConvolveOp.EDGE_NO_OP, null));
float[] sharp = {
0f, -1f, 0f,
-1f, 5f, -1f,
0f, -1f, 0f
};
mOps.put("Sharpen", new ConvolveOp(
new Kernel(3, 3, sharp)));
| | private void | createImageFrame(java.lang.String imageFile)
// Create the image frame.
mSplitImageComponent = new SplitImageComponent(imageFile);
mImageFrame = new Frame(imageFile);
mImageFrame.setLayout(new BorderLayout());
mImageFrame.add(mSplitImageComponent, BorderLayout.CENTER);
Utilities.sizeContainerToComponent(mImageFrame, mSplitImageComponent);
Utilities.centerFrame(mImageFrame);
mImageFrame.setVisible(true);
| | private void | createLookups()
short[] brighten = new short[256];
short[] betterBrighten = new short[256];
short[] posterize = new short[256];
short[] invert = new short[256];
short[] straight = new short[256];
short[] zero = new short[256];
for (int i = 0; i < 256; i++) {
brighten[i] = (short)(128 + i / 2);
betterBrighten[i] = (short)(Math.sqrt((double)i / 255.0) * 255.0);
posterize[i] = (short)(i - (i % 32));
invert[i] = (short)(255 - i);
straight[i] = (short)i;
zero[i] = (short)0;
}
mOps.put("Brighten", new LookupOp(new ShortLookupTable(0, brighten),
null));
mOps.put("Better Brighten", new LookupOp(
new ShortLookupTable(0, betterBrighten), null));
mOps.put("Posterize", new LookupOp(
new ShortLookupTable(0, posterize), null));
mOps.put("Invert", new LookupOp(new ShortLookupTable(0, invert), null));
short[][] redOnly = { invert, straight, straight };
short[][] greenOnly = { straight, invert, straight };
short[][] blueOnly = { straight, straight, invert };
mOps.put("Red invert", new LookupOp(new ShortLookupTable(0, redOnly),
null));
mOps.put("Green invert", new LookupOp(
new ShortLookupTable(0, greenOnly), null));
mOps.put("Blue invert", new LookupOp(
new ShortLookupTable(0, blueOnly), null));
short[][] redRemove = { zero, straight, straight };
short[][] greenRemove = { straight, zero, straight };
short[][] blueRemove = { straight, straight, zero };
mOps.put("Red remove", new LookupOp(
new ShortLookupTable(0, redRemove), null));
mOps.put("Green remove", new LookupOp(
new ShortLookupTable(0, greenRemove), null));
mOps.put("Blue remove", new LookupOp(
new ShortLookupTable(0, blueRemove), null));
| | private void | createOps()
mOps = new Hashtable();
createConvolutions();
createTransformations();
createLookups();
createRescales();
createColorOps();
| | private void | createRescales()
mOps.put("Rescale .5, 0", new RescaleOp(.5f, 0, null));
mOps.put("Rescale .5, 64", new RescaleOp(.5f, 64, null));
mOps.put("Rescale 1.2, 0", new RescaleOp(1.2f, 0, null));
mOps.put("Rescale 1.5, 0", new RescaleOp(1.5f, 0, null));
| | private void | createTransformations()
AffineTransform at;
at = AffineTransform.getRotateInstance(Math.PI / 6, 0, 285);
mOps.put("Rotate nearest neighbor", new AffineTransformOp(at, null));
RenderingHints rh = new RenderingHints(
RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
mOps.put("Rotate bilinear", new AffineTransformOp(at, rh));
at = AffineTransform.getScaleInstance(.5, .5);
mOps.put("Scale .5, .5", new AffineTransformOp(at, null));
at = AffineTransform.getRotateInstance(Math.PI / 6);
mOps.put("Rotate bilinear (origin)", new AffineTransformOp(at, rh));
| | private void | createUI()
setFont(new Font("Serif", Font.PLAIN, 12));
setLayout(new BorderLayout());
// Set our location to the left of the image frame.
setSize(200, 350);
Point pt = mImageFrame.getLocation();
setLocation(pt.x - getSize().width, pt.y);
final Checkbox accumulateCheckbox = new Checkbox("Accumulate", false);
final Label statusLabel = new Label("");
// Make a sorted list of the operators.
Enumeration e = mOps.keys();
Vector names = new Vector();
while (e.hasMoreElements())
names.addElement(e.nextElement());
Collections.sort(names);
final java.awt.List list = new java.awt.List();
for (int i = 0; i < names.size(); i++)
list.add((String)names.elementAt(i));
add(list, BorderLayout.CENTER);
// When an item is selected, do the corresponding transformation.
list.addItemListener(new ItemListener() {
public void itemStateChanged(ItemEvent ie) {
if (ie.getStateChange() != ItemEvent.SELECTED) return;
String key = list.getSelectedItem();
BufferedImageOp op = (BufferedImageOp)mOps.get(key);
BufferedImage source = mSplitImageComponent.getSecondImage();
boolean accumulate = accumulateCheckbox.getState();
if (source == null || accumulate == false)
source = mSplitImageComponent.getImage();
String previous = mImageFrame.getTitle() + " + ";
if (accumulate == false)
previous = "";
mImageFrame.setTitle(previous + key);
statusLabel.setText("Performing " + key + "...");
list.setEnabled(false);
accumulateCheckbox.setEnabled(false);
BufferedImage destination = op.filter(source, null);
mSplitImageComponent.setSecondImage(destination);
mSplitImageComponent.setSize(
mSplitImageComponent.getPreferredSize());
mImageFrame.setSize(mImageFrame.getPreferredSize());
list.setEnabled(true);
accumulateCheckbox.setEnabled(true);
statusLabel.setText("Performing " + key + "...done.");
}
});
Button loadButton = new Button("Load...");
loadButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae) {
FileDialog fd = new FileDialog(Sampler.this);
fd.show();
if (fd.getFile() == null) return;
String path = fd.getDirectory() + fd.getFile();
mSplitImageComponent.setImage(path);
mSplitImageComponent.setSecondImage(null);
Utilities.sizeContainerToComponent(
mImageFrame, mSplitImageComponent);
mImageFrame.validate();
mImageFrame.repaint();
}
});
Panel bottom = new Panel(new GridLayout(2, 1));
Panel topBottom = new Panel();
topBottom.add(accumulateCheckbox);
topBottom.add(loadButton);
bottom.add(topBottom);
bottom.add(statusLabel);
add(bottom, BorderLayout.SOUTH);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
mImageFrame.dispose();
dispose();
System.exit(0);
}
});
| | public static void | main(java.lang.String[] args)
String imageFile = "Ethol with Roses.small.jpg";
if (args.length > 0) imageFile = args[0];
new Sampler(imageFile);
|
|
