Reading in an image file

[meestafa]

I am trying to read in a jpeg image to a BufferedImage and I am getting an error, "Can't read input file". Here is my code:

package StereoCorrespondence;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
/**
 *
 * @author bheussler
 */
public class StereoCorrespondence {
    
    public StereoCorrespondence() throws IOException {

        StereoCorrespondence.loadImage("images/mapleft.jpeg");

    }

    public static BufferedImage loadImage(String ref) throws IOException {
        BufferedImage bimg = null;
        bimg = ImageIO.read(new File(ref));
        System.out.println(bimg.getHeight());
        return bimg;
    }


    public static void main(String[]args) throws IOException {
        StereoCorrespondence stereoCorrespondence = new StereoCorrespondence();

    }

}

[Tolls]

What's the full exception you get?
Including stack trace.

[RockoAndy]

check the image path u have specified.Make sure its under package images

[meestafa]

I got it to work. Here is the code:

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package StereoCorrespondence;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;

/**
 *
 * @author bheussler
 */
public class StereoCorrespondence {
    
    public StereoCorrespondence() throws IOException {

        BufferedImage mapleft = StereoCorrespondence.loadImage("/Users/bheussler/NetBeansProjects/StereoCorrespondence/src/StereoCorrespondence/images/mapleft.jpeg");
        BufferedImage mapright = StereoCorrespondence.loadImage("/Users/bheussler/NetBeansProjects/StereoCorrespondence/src/StereoCorrespondence/images/mapright.jpeg");
        BufferedImage conesleft = StereoCorrespondence.loadImage("/Users/bheussler/NetBeansProjects/StereoCorrespondence/src/StereoCorrespondence/images/conesleft.jpeg");
        BufferedImage conesright = StereoCorrespondence.loadImage("/Users/bheussler/NetBeansProjects/StereoCorrespondence/src/StereoCorrespondence/images/conesright.jpeg");
        BufferedImage teddyleft = StereoCorrespondence.loadImage("/Users/bheussler/NetBeansProjects/StereoCorrespondence/src/StereoCorrespondence/images/teddyleft.jpeg");
        BufferedImage teddyright = StereoCorrespondence.loadImage("/Users/bheussler/NetBeansProjects/StereoCorrespondence/src/StereoCorrespondence/images/teddyright.jpeg");

        System.out.print(mapleft.getHeight());
    }

    public static BufferedImage loadImage(String ref) throws IOException {
        BufferedImage bimg = null;
        bimg = ImageIO.read(new File(ref));
        return bimg;
    }


    public static void main(String[]args) throws IOException {
        StereoCorrespondence stereoCorrespondence = new StereoCorrespondence();

    }

}

The only issue is that I have to use the full path location for the images, rather than just referencing them from the local "images" directory.

[Tolls]

<class>.getResourceAsStream().

[meestafa]

This is the line that I try:

 BufferedImage mapleft = StereoCorrespondence.loadImage(getClass().getResourceAsStream("images/mapleft.jpeg"));

It doesn't work and says, "Uncompilable source code"

[Tolls]

It's the call to ImageIO.read that should have the getResourceAsStream. Unless you've chnged the signature to the loadImage() method to take an InputStream instead of a String.

By the way, I'm sure there's more detail to your problem than simply "Uncompilable source code".

[meestafa]

I haven't changed the loadImage(). It still takes a string. So what you are saying is that my code should look like:

 BufferedImage mapleft = StereoCorrespondence.loadImage(ImageIO.read(getResourceAsStream("http://www.java-forums.org/images/mapleft.jpeg")));

?

ps, i dont know why the code won't display

[Tolls]

No no no no no no no no!
(and a couple more for luck ;))

Your loadImage() method has a String parameter.
Your call from a couple of posts up was passing an InputStream into it...hence (at a guess, since you haven't actually said what the error was) your compilation error.

I suggested passing a String in as you were originally, and changing the loadImage() code so it did ImageIO.read(getResourceAsStream(etc etct)), rather than the read(filename) that it is currently doing.