private void createImage(OutputStream out) {
int width = 100;
int height = 100;
BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
Graphics2D g = bi.createGraphics();
// set background color
g.setBackground(Color.BLUE);
g.clearRect(0, 0, width, height);
// set color
g.setColor(Color.RED);
g.drawLine(0, 0, 99, 99);
g.dispose();
bi.flush();
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);
param.setQuality(1.0f, false);
encoder.setJPEGEncodeParam(param);
try {
encoder.encode(bi);
} catch (IOException e) {
e.printStackTrace();
}
}
public static void saveJPG(Image img, String s) {
BufferedImage bi =
new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = bi.createGraphics();
g2.drawImage(img, null, null);
FileOutputStream out = null;
try {
out = new FileOutputStream(s);
} catch (java.io.FileNotFoundException io) {
System.out.println("File Not Found");
}
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);
param.setQuality(0.5f, false);
encoder.setJPEGEncodeParam(param);
try {
encoder.encode(bi);
out.close();
} catch (java.io.IOException io) {
System.out.println("IOException");
}
}
/**
* @param bufInputStream
* @param outputStream
*/
private void writeScaledImage(BufferedInputStream bufInputStream, OutputStream outputStream) {
long millis = System.currentTimeMillis();
try {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
int bytesRead = 0;
byte[] buffer = new byte[8192];
while ((bytesRead = bufInputStream.read(buffer, 0, 8192)) != -1) {
bos.write(buffer, 0, bytesRead);
}
bos.close();
byte[] imageBytes = bos.toByteArray();
Image image = Toolkit.getDefaultToolkit().createImage(imageBytes);
MediaTracker mediaTracker = new MediaTracker(new Container());
mediaTracker.addImage(image, 0);
mediaTracker.waitForID(0);
// determine thumbnail size from WIDTH and HEIGHT
int thumbWidth = 300;
int thumbHeight = 200;
double thumbRatio = (double) thumbWidth / (double) thumbHeight;
int imageWidth = image.getWidth(null);
int imageHeight = image.getHeight(null);
double imageRatio = (double) imageWidth / (double) imageHeight;
if (thumbRatio < imageRatio) {
thumbHeight = (int) (thumbWidth / imageRatio);
} else {
thumbWidth = (int) (thumbHeight * imageRatio);
}
// draw original image to thumbnail image object and
// scale it to the new size on-the-fly
BufferedImage thumbImage =
new BufferedImage(thumbWidth, thumbHeight, BufferedImage.TYPE_INT_RGB);
Graphics2D graphics2D = thumbImage.createGraphics();
graphics2D.setRenderingHint(
RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
graphics2D.drawImage(image, 0, 0, thumbWidth, thumbHeight, null);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(outputStream);
JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(thumbImage);
int quality = 70;
quality = Math.max(0, Math.min(quality, 100));
param.setQuality((float) quality / 100.0f, false);
encoder.setJPEGEncodeParam(param);
encoder.encode(thumbImage);
} catch (IOException ex) {
log.error(ex.getMessage(), ex);
} catch (InterruptedException ex) {
log.error(ex.getMessage(), ex);
} finally {
log.debug("Time for thumbnail: " + (System.currentTimeMillis() - millis) + "ms");
}
}
// write a buffered image to a jpeg file.
protected static void saveJPG(Image img, String filename) {
BufferedImage bi = imageToBufferedImage(img);
FileOutputStream out = null;
try {
out = new FileOutputStream(filename);
} catch (java.io.FileNotFoundException io) {
System.out.println("File Not Found");
}
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bi);
param.setQuality(0.8f, false);
encoder.setJPEGEncodeParam(param);
try {
encoder.encode(bi);
out.close();
} catch (java.io.IOException io) {
System.out.println("IOException");
}
}
/**
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*
* @param originalFile ԭͼƬ
* @param resizedFile ���ź��ͼƬ
* @param newWidth ���
* @param quality ���ű��� (�ȱ���)
* @throws IOException
*/
private static void resize(File originalFile, File resizedFile, int newWidth, float quality)
throws IOException {
if (quality < 0 || quality > 1)
throw new IllegalArgumentException("Quality has to be between 0 and 1");
ImageIcon ii = new ImageIcon(originalFile.getCanonicalPath());
Image i = ii.getImage();
Image resizedImage = null;
int iWidth = i.getWidth(null);
int iHeight = i.getHeight(null);
if (iWidth > iHeight)
resizedImage = i.getScaledInstance(newWidth, newWidth * iHeight / iWidth, Image.SCALE_SMOOTH);
else
resizedImage = i.getScaledInstance(newWidth * iWidth / iHeight, newWidth, Image.SCALE_SMOOTH);
// This code ensures that all the pixels in the image are loaded.
Image temp = new ImageIcon(resizedImage).getImage();
// Create the buffered image.
BufferedImage bufferedImage =
new BufferedImage(temp.getWidth(null), temp.getHeight(null), BufferedImage.TYPE_INT_RGB);
// Copy image to buffered image.
Graphics g = bufferedImage.createGraphics();
// Clear background and paint the image.
g.setColor(Color.white);
g.fillRect(0, 0, temp.getWidth(null), temp.getHeight(null));
g.drawImage(temp, 0, 0, null);
g.dispose();
// Soften.
float softenFactor = 0.05f;
float[] softenArray = {
0, softenFactor, 0, softenFactor, 1 - softenFactor * 4, softenFactor, 0, softenFactor, 0
};
Kernel kernel = new Kernel(3, 3, softenArray);
ConvolveOp cOp = new ConvolveOp(kernel, ConvolveOp.EDGE_NO_OP, null);
bufferedImage = cOp.filter(bufferedImage, null);
// Write the jpeg to a file.
FileOutputStream out = new FileOutputStream(resizedFile);
// Encodes image as a JPEG data stream
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(bufferedImage);
param.setQuality(quality, true);
encoder.setJPEGEncodeParam(param);
encoder.encode(bufferedImage);
}