How crop some region of image in Java?

Question

I'm trying do the following code:

private void crop(HttpServletRequest request, HttpServletResponse response){     int x = 100;     int y = 100;     int w = 3264;     int h = 2448;      String path = "D:images\\upload_final\\030311175258.jpg";      BufferedImage image = ImageIO.read(new File(path));     BufferedImage out = image.getSubimage(x, y, w, h);      ImageIO.write(out, "jpg", new File(path));  } 

But keeps giving me the same error:

java.awt.image.RasterFormatException: (x + width) is outside of Raster sun.awt.image.ByteInterleavedRaster.createWritableChild(ByteInterleavedRaster.java:1230)     java.awt.image.BufferedImage.getSubimage(BufferedImage.java:1156) 

Where is my mistake ?

Answer 1

My initial guess is that your (x + w) > image.getWidth().

If you print out image.getWidth(), is it 3264? :O

What you're currently doing is this:

<-- 3264 ------> +--------------+ |    orig      | +-- Causing the problem |              | V |   +--------------+ |100| overlap  |   | |   |          |   | |   |          |   | +---|----------+   |     |              |     |    out       |     +--------------+ 

If you're trying to trim off the top corner of orig, and just get "overlap" then you need to do

BufferedImage out = image.getSubimage(x, y, w-x, h-y); 

If you're trying to do this:

+------------------+ |                  | |  +-----------+   | |  |           |   | |  |           |   | |  |           |   | |  |           |   | |  +-----------+   | |                  | +------------------+ 

Then you need to do this:

BufferedImage out = image.getSubimage(x, y, w-2*x, h-2*y);