After loading the image, I want to create an exact copy of the image whereby the quality and scale can remain the same. With my current code, the quality was reduced.
public class Image {
private static final String path = "C:/Users.../src/7horses.jpg";
private static final File file = new File(path);
static BufferedImage deepCopy(BufferedImage bi) throws IOException {
String saveAs = "copy.jpg";
ColorModel cm = bi.getColorModel();
boolean isAlphaPremultiplied = cm.isAlphaPremultiplied();
WritableRaster raster = bi.copyData(null);
BufferedImage cImg = new BufferedImage(cm, raster, isAlphaPremultiplied, null);
File saveImage = new File("C:/Users.../src", saveAs);
ImageIO.write(cImg, "jpg", saveImage);
return cImg;
}
public static void main(String[] args) throws IOException {
BufferedImage cp, img;
img = ImageIO.read(file);
cp = deepCopy(img);
}
}
try just to copy your image file, use this code :
InputStream is = null;
OutputStream os = null;
try {
is = new FileInputStream(new File("path/to/img/src"));
os = new FileOutputStream(new File("path/to/img/dest"));
byte[] buffer = new byte[1024];
int length;
while ((length = is.read(buffer)) > 0) {
os.write(buffer, 0, length);
}
} finally {
is.close();
os.close();
}
if you are using Java 8 then you can just call Files.copy method, check it in the docs
Go from using:
ImageIO.write(cImg, "jpg", saveImage);
To the following: (Don't have my dev environment here to test this but think I have this close for you.)
Iterator iterator = ImageIO.getImageWritersByFormatName("jpeg");
ImageWriter writer = (ImageWriter)iterator.next();
ImageWriteParam imageWriteParam = writer.getDefaultWriteParam();
imageWriteParam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
imageWriteParam.setCompressionQuality(1); //0 is max Compression 1 is max quality
FileImageOutputStream output = new FileImageOutputStream(saveImage);
writer.setOutput(output);
IIOImage image = new IIOImage(cImg, null, null);
writer.write(null, image, iwp);
writer.dispose();
output.close();
Related
My error when sending an image Client-Server-Client is "Corrupt JPEG data: 4350674 extraneous bytes before marker 0xd9" What I can change? Here is my code :
SERVER
InputStream is = klienciRemoteScreen[1].getInputStream();
OutputStream os = klienciRemoteScreen[0].getOutputStream();
byte[] bytesize = new byte[4];
is.read(bytesize);
int size = ByteBuffer.wrap(bytesize).asIntBuffer().get();
byte [] image= new byte [size];
byte[]bufferimage = new byte [1];
os.write(bytesize);
os.flush();
int count;
while((count = is.read(image)) > 0)
{
os.write(image);
os.flush();
}
os.close();
CLIENT sending image to server
OutputStream os = noguiklient.sockRemoteScreen.getOutputStream();
Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
Rectangle rectangle = new Rectangle(dim);
Robot robot = new Robot();
BufferedImage image = robot.createScreenCapture(rectangle);
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
ImageIO.write(image, "jpg", byteArrayOutputStream);
byte[] size =
ByteBuffer.allocate(4).putInt(byteArrayOutputStream.size()).array();
int sizeas = ByteBuffer.wrap(size).asIntBuffer().get();
os.write(size);
os.write(byteArrayOutputStream.toByteArray());
os.close();
CLIENT Receiving from server
JFrame okno = new JFrame();
okno.setSize(1300, 1000);
okno.setTitle(" Remote screen");
okno.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
JPanel panel = new JPanel();
panel.setSize(1300,1000);
panel.setLayout(null);
okno.add(panel);
okno.setVisible(true);
InputStream is = Klient.sockRemoteScreen.getInputStream();
File photo = new File ("photo") ;
FileOutputStream fos = new FileOutputStream(photo);
byte[] buffer = new byte[4];
is.read(buffer);
int size = ByteBuffer.wrap(buffer).asIntBuffer().get();
byte[] image = new byte [size];
int count;
int i =0 ;
while((count = is.read(image)) > 0)
{
fos.write(image);
fos.flush();
}
ImageIcon screen = new ImageIcon("photo");
Image imagefinal = screen.getImage();
imagefinal =
imagefinal.getScaledInstance(okno.getWidth(),okno.getHeight(), Image.SCALE_SMOOTH);
BufferedImage(width,height,BufferedImage.TYPE_INT_ARGB);
Graphics graphics = panel.getGraphics();
while(true)
{
graphics.drawImage(imagefinal, 0, 0, panel.getWidth(), panel.getHeight(), panel);
}
Example of this bad Image
When I try to send with ImageIO everything is fine but I want to try with bytes and there is a problem.
Thank you :)
I need to decode a DataMatrix in a PDF, in my case the DataMatrix it's not a image.
My first idea was transform the Page to a Image and crop the area with the DataMatrix and after decode, but it seems the (image)result it's corrupted and I can't decode properly. Any idea How I can keep the quality of the PDF??
String sourceDir = "data/test2.pdf";
File pdf = new File(sourceDir);
PDDocument document = PDDocument.load(sourceDir);
List<PDPage> list = document.getDocumentCatalog().getAllPages();
String key;
for (PDPage page : list) {
BufferedImage image = page.convertToImage(BufferedImage.TYPE_INT_RGB, 300);
BufferedImage dest = image.getSubimage(0, 2600, 800, 800);
File outputFile = new File( "data/test2.jpg");
ImageIO.write(dest, "png", outputFile);
LuminanceSource lumSource = new BufferedImageLuminanceSource (dest);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(lumSource));
Hashtable<DecodeHintType, Object> hint = new Hashtable<DecodeHintType, Object>();
hint.put(DecodeHintType.TRY_HARDER, BarcodeFormat.DATA_MATRIX);
DataMatrixReader DMreader = new DataMatrixReader();
try {
Result result = DMreader.decode(bitmap, hint);
System.out.println(result);
}catch(Exception e){
System.out.println("NO Data Matrix");
}
}
}
Version 2.0
PDDocument document = PDDocument.load(new File(sourceDir));
PDFRenderer pdfRenderer = new PDFRenderer(document);
for (int page = 0; page < document.getNumberOfPages(); ++page)
{
BufferedImage bufferedImage = pdfRenderer.renderImageWithDPI(page, 600, ImageType.RGB);
BufferedImage datamatrixImg = bufferedImage.getSubimage(150, 6000, 600, 900);
File outputfile = new File("out/image_"+page+".jpg");
ImageIO.write(datamatrixImg, "jpg", outputfile);
LuminanceSource lumSource = new BufferedImageLuminanceSource(datamatrixImg);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(lumSource));
Hashtable<DecodeHintType, Object> hint = new Hashtable<DecodeHintType, Object>();
hint.put(DecodeHintType.TRY_HARDER, BarcodeFormat.DATA_MATRIX);
DataMatrixReader DMreader = new DataMatrixReader();
try {
Result result = DMreader.decode(bitmap, hint);
System.out.println("Decode: "+ result );
} catch (Exception e) {
System.out.println("No DataMatrix");
}
}
document.close();
I have this code where i get an InputStream and create an image:
Part file;
// more code
try {
InputStream is = file.getInputStream();
File f = new File("C:\\ImagenesAlmacen\\QR\\olaKeAse.jpg");
OutputStream os = new FileOutputStream(f);
byte[] buf = new byte[1024];
int len;
while ((len = is.read(buf)) > 0) {
os.write(buf, 0, len);
}
os.close();
is.close();
} catch (IOException e) {
System.out.println("Error");
}
The problem is that I have to resize that image before i create if from the InputStream
So how to resize what I get from the InputStream and then create that resized image. I want to set the largest side of the image to 180px and resize the other side with that proportion.
Example:
Image = 289px * 206px
Resized image = 180px* 128px
I did this:
try {
InputStream is = file.getInputStream();
Image image = ImageIO.read(is);
BufferedImage bi = this.createResizedCopy(image, 180, 180, true);
ImageIO.write(bi, "jpg", new File("C:\\ImagenesAlmacen\\QR\\olaKeAse.jpg"));
} catch (IOException e) {
System.out.println("Error");
}
BufferedImage createResizedCopy(Image originalImage, int scaledWidth, int scaledHeight, boolean preserveAlpha) {
int imageType = preserveAlpha ? BufferedImage.TYPE_INT_RGB : BufferedImage.TYPE_INT_ARGB;
BufferedImage scaledBI = new BufferedImage(scaledWidth, scaledHeight, imageType);
Graphics2D g = scaledBI.createGraphics();
if (preserveAlpha) {
g.setComposite(AlphaComposite.Src);
}
g.drawImage(originalImage, 0, 0, scaledWidth, scaledHeight, null);
g.dispose();
return scaledBI;
}
And I did not use the other code.
Hope helps someone!
I am reading two images in a servlet and need to show both at the same time.
Currently, only one image is shown (one that is written first). unable to write another image.
I do not get any error.
My servlet code goes like this :
BufferedImage buffImageA = ImageIO.read(getServletContext().getResourceAsStream("/images/3520276097315A.jpg"));
BufferedImage buffImageB = ImageIO.read(getServletContext().getResourceAsStream("/images/3520276097315B.jpg"));
logger.logDebug("Images has been read");
watermark(buffImageA,ApplicationConfig.WATERMARK_TEXT);
watermark(buffImageB,ApplicationConfig.WATERMARK_TEXT);
byte[] resultDataA = encodeJPEG(buffImageA, 100);
byte[] resultDataB = encodeJPEG(buffImageB, 100);
byte[] combinedImage = new byte[resultDataA.length+resultDataB.length];
for(int i=0; i<resultDataA.length ;i++){
combinedImage[i] = resultDataA[i];
}
for(int i=resultDataA.length; i<resultDataB.length ;i++){
combinedImage[i] = resultDataB[i];
}
response.setContentType("image/jpeg");
response.setContentLength(resultDataA.length + resultDataB.length);
OutputStream os = response.getOutputStream();
os.write(combinedImage);
os.close();
//Watermarking process goes here
private void watermark(BufferedImage original, String watermarkText) {
}
private byte[] encodeJPEG(BufferedImage image, int quality) throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream((int) ((float) image.getWidth() * image.getHeight() / 4));
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(baos);
JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(image);
quality = Math.max(0, Math.min(quality, 100));
param.setQuality((float) quality / 100.0f, false);
encoder.setJPEGEncodeParam(param);
encoder.encode(image);
byte[] result = baos.toByteArray();
baos.close();
return result;
}
I have tried using ImageIO.write to write the image but failed to get what is desired.
Your second for loop must be like this:
for(int i=resultDataA.length; i<resultDataB.length+resultDataA.length ;i++){
combinedImage[i] = resultDataB[i-resultDataA.length];
}
EDIT :
This is a compilable, runnable example close to what you're expecting :
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import javax.imageio.ImageIO;
import java.awt.Graphics;
public class Essai2 {
public static void main(String[] args) {
try {
byte[] imageInByte;
BufferedImage originalImage1 = ImageIO.read(new File("essai1.jpg"));
BufferedImage originalImage2 = ImageIO.read(new File("essai2.jpg"));
// convert BufferedImage to byte array
ByteArrayOutputStream baos1 = new ByteArrayOutputStream();
ByteArrayOutputStream baos2 = new ByteArrayOutputStream();
ImageIO.write(originalImage1, "jpg", baos1);
ImageIO.write(originalImage2, "jpg", baos2);
baos1.flush();
baos2.flush();
byte[] ba1 = baos1.toByteArray();
byte[] ba2 = baos2.toByteArray();
imageInByte = new byte[ba1.length + ba2.length];
//System.out.println(new String(imageInByte));
System.arraycopy(ba1, 0, imageInByte, 0, ba1.length);
//System.out.println(new String(imageInByte));
System.arraycopy(ba2, 0, imageInByte, ba1.length, ba2.length);
//System.out.println(new String(imageInByte));
baos1.close();
baos2.close();
// convert byte array back to BufferedImage
InputStream in = new ByteArrayInputStream(imageInByte);
int w = Math.max(originalImage1.getWidth(), originalImage2.getWidth());
//int h = Math.max(originalImage1.getHeight(), originalImage2.getHeight());
int h = originalImage1.getHeight() + originalImage2.getHeight();
BufferedImage bImageFromConvert = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
//BufferedImage bImageFromConvert = new BufferedImage(w, h, BufferedImage.TYPE_4BYTE_ABGR );
//BufferedImage bImageFromConvert = ImageIO.read(in);
Graphics g = bImageFromConvert.getGraphics();
g.drawImage(originalImage1, 0, 0, null);
g.drawImage(originalImage2, 0, originalImage1.getHeight(), null);
ImageIO.write(bImageFromConvert, "jpg", new File("result.jpg"));
} catch (IOException e) {
System.out.println(e.getMessage());
}
}
}
essai1.jpg:
essai2.jpg:
result.jpg:
I haven't found for the moment why there's a third color added to result.jpg. But I think this example can help you and I will fix my code asap.
EDIT2 :
Change :
BufferedImage bImageFromConvert = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
To :
BufferedImage bImageFromConvert = new BufferedImage(w, h, originalImage1.getType());
And it will works fine.
result.jpg:
I am tring to create an image file from database on disk. I wrote the following code:
{
oracle.sql.BLOB blob1 = (BLOB) rs.getBlob(1);
//fillFilePath is file path
File blobFile = new File(fillFilePath);
String checkExe[]=fillFilePath.split("\\.");
FileOutputStream outStream = new FileOutputStream(blobFile);
InputStream inStream = blob1.getBinaryStream();
int length = -1;
int size = blob1.getBufferSize();
byte[] buffer = new byte[size];
BufferedImage image = ImageIO.read( inStream );
System.out.println("Inside image upload");
System.out.println("Inside image jpg");
ImageIO.write(image, "JPG", outStream);
But it is not working.
Please give me any suggestions?
try:
BLOB image = ((OracleResultSet) rs).getBLOB("image");
blobLength = image.length();
chunkSize = image.getChunkSize();
binaryBuffer = new byte[chunkSize];
for (position = 1; position <= blobLength; position += chunkSize)
{
bytesRead = image.getBytes(position, chunkSize, binaryBuffer);
outputFileOutputStream.write(binaryBuffer, 0, bytesRead);
totbytesRead += bytesRead;
totbytesWritten += bytesRead;
}
BufferedImage bi= ImageIO.read(obj.getPhoto().getBinaryStream());//photo is Blob.
File outputfile = new File("folderInYourProject\\"+nameVar+".jpg");
ImageIO.write(bi, "jpg", outputfile);