Read Tiff format in Java eclipse

How do i read a TIFF image using Java IMAGEIO library??(I am using Eclipse Luna)..And once i download the plugin(JAR files) how to give the Classpath so that it can read my input TIFF image file?

回答1:

Here a quick example to convert a TIFF image into a PNG image.

// quick conversion example
File inputFile = new File("image.tiff");
File outputFile = new File("output.png");
BufferedImage image = ImageIO.read(inputFile);
ImageIO.write(image, "png", outputFile);

Print a list of all supported formats of the JAI ImageIO library.

import javax.imageio.ImageIO;
...
for (String format : ImageIO.getWriterFormatNames()) {
    System.out.println("format = " + format);
}

note For the convertion of image formats which have no built-in support a supporting library must be in the classpath. To find the supported formats check https://docs.oracle.com/javase/tutorial/2d/images/loadimage.html or the snippet above.

e.g. for TIFF you could use the jai_imageio-1.1.jar (or newer).

javac -cp jai_imageio-1.1.jar:. Main.java
java -cp jai_imageio-1.1.jar:. Main

If no TIFF format supporting library is in the classpath the above convertion snippet fails with java.lang.IllegalArgumentException: image == null!.

Following formats have built-in support (Java 8)

BMP
GIF
JPEG
PNG
WBMP

jai_imageio-1.1.jar adds support for

JPEG2000
PNM
RAW
TIFF

edit As times goes by and Java 9 is released, a small update, because Java 9 supports TIFF now out of the box.

compile and run with Java 9 without an additional library

import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;
class TiffToPng {
    public static void main(String[] args) throws Exception {
        File inputFile = new File("image.tiff");
        File outputFile = new File("output.png");
        BufferedImage image = ImageIO.read(inputFile);
        ImageIO.write(image, "png", outputFile);
    }
}

to find supported ImageReader / ImageWriter formats resp. MIME types you could use following snippets

for (String format : ImageIO.getReaderFormatNames()) {
    System.out.println("format = " + format);
}
...
for (String format : ImageIO.getReaderMIMETypes()) {
    System.out.println("format = " + format);
}


for (String format : ImageIO.getWriterFormatNames()) {
    System.out.println("format = " + format);
}
...
for (String format : ImageIO.getWriterMIMETypes()) {
    System.out.println("format = " + format);
}

回答2:

If you are getting the error:

java.lang.IllegalArgumentException: image == null!

Just put the below jar :-

If you are using eclipse, just add it to referenced libraries.
If you are using just simple java file and running it through console, just paste this jar in the class path.

jai_imageio-1.1.jar | http://www.java2s.com/Code/JarDownload/jai/jai_imageio-1.1.jar.zip

And Import the following :

import com.sun.media.imageio.plugins.tiff.*;