Get color of each pixel of an image using BufferedImages

Question

I am trying to get every single color of every single pixel of an image. My idea was following:

int[] pixels;
BufferedImage image;

image = ImageIO.read(this         


        

Answer 1

I know this has already been answered, but the answers given are a bit convoluted and could use improvement. The simple idea is to just loop through every (x,y) pixel in the image, and get the color of that pixel.

BufferedImage image = MyImageLoader.getSomeImage();
for ( int x = 0; x < image.getWidth(); x++ ) {
    for( int y = 0; y < image.getHeight(); y++ ) {
        Color pixel = new Color( image.getRGB( x, y ) );
        // Do something with pixel color here :)
    }
}

You could then perhaps wrap this method in a class, and implement Java's Iterable API.

class IterableImage implements Iterable {

    private BufferedImage image;

    public IterableImage( BufferedImage image ) {
        this.image = image;
    }

    @Override
    public Iterator iterator() {
        return new Itr();
    }

    private final class Itr implements Iterator {

        private int x = 0, y = 0;

        @Override
        public boolean hasNext() {
            return x < image.getWidth && y < image.getHeight();
        }

        @Override
        public Color next() {
            x += 1;
            if ( x >= image.getWidth() ) {
                x = 0;
                y += 1;
            }
            return new Color( image.getRGB( x, y ) );
        }

    }

}

The usage of which might look something like the following

BufferedImage image = MyImageLoader.getSomeImage();
for ( Color color : new IterableImage( image ) ) {
    // Do something with color here :)
}