How to Read JPEG image into BufferedImage object using Java
image, java, jpeg
Solution
This is apparently a know bug, I saw several suggestions (this is one) that suggest using `Toolkit#createImage` instead, which apparently ignores the color model.
I tested this and it seems to work fine.
public class TestImageIO01 {
public static void main(String[] args) {
try {
Image in = Toolkit.getDefaultToolkit().createImage("C:\\hold\\test\\13652375852388.jpg");
JOptionPane.showMessageDialog(null, new JLabel(new ImageIcon(in)), "Yeah", JOptionPane.INFORMATION_MESSAGE);
BufferedImage out = new BufferedImage(in.getWidth(null), in.getHeight(null), BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = out.createGraphics();
g2d.drawImage(in, 0, 0, null);
g2d.dispose();
ImageIO.write(out, "jpg", new File("C:\\hold\\test\\Test01.jpg"));
} catch (Exception ex) {
ex.printStackTrace();
}
}
}
nb- I used the `JOptionPane` to verify the incoming image. When using `ImageIO` it comes in with the red tinge, with `Toolkit` it looks fine.
Updated
And an explantation
Problem
This is not a duplicated question here, because I've been searching for the solution for a long time in Google and StackOverflow, and still cannot find a solution. I have these two images: These are two images from the same website with same prefix and same format. The only difference is the size: the first is larger, while the second is smaller. I downloaded both of the images to local folder and used Java to read them into BufferedImage objects. However, when I outputted the BufferedImages to local files, I found that the first image was almost red, while the second was normal(same as original). What's wrong with my code? ``` byte[] rawData = getRawBytesFromFile(imageFilePath); // some code to read raw bytes from image file ImageInputStream iis = ImageIO.createImageInputStream(new ByteArrayInputStream(rawData)); BufferedImage img = ImageIO.read(iis); FileOutputStream fos = new FileOutputStream(outputImagePath, false); ImageIO.write(img, "JPEG", fos); fos.flush(); fos.close(); ``` PS: I used GIMP to open the first image and detected that the Color Mode is 'sRGB', no alpha or other stuff.