Splitting Images into two

[Rodricks george]

Hi sir,

I want to split a png file into two parts using co ordinates, how can i achieve this. please through some light on the same.

-Thanks with regards,

Rodricks

[Ulf Dittmer]

The rough outline would be

load the image using javax.imageio.ImageIO.read, which will give you a BufferedImage

create sub-images using the BufferedImage.getSubimage method

save those using javax.imageio.ImageIO.write

[Rodricks george]

Dear Sir,

Thanks for the reply. I want to split up images horizontally in to two pieces. How can i set the co ordinates.

-Thanks with regards,

Rodricks

[Ulf Dittmer]

If you have an image with the corners (0,0), (w,0), (w,h) and (0,h), what would be the coordinates for the two subimages?

I'll give a clue:

1st image: (0,0), (xxx,0), (xxx,h) and (0,h)

2nd image: (xxx+1,0), (w,0), (w,h) and (xxx+1,h)

What value would "xxx" have? You need to consider two cases: "w" is even, and "w" is odd.

[Rodricks george]

Dear Sir,

Here the code i implemented for splitting images into two horizontally

    
This is first half of image 
 
BufferedImage loadImg1 = loadImg.getSubimage(0, 0, loadImg.getWidth(), loadImg.getHeight()/2);
saveImage(loadImg1, ref1);
 

 
This is Second half of image 
 
BufferedImage loadImg2 = loadImg123.getSubimage(0,loadImg.getHeight()/2,loadImg.getWidth(), loadImg.getHeight()/2);
saveImage(loadImg2, ref2);
 

If i want to split horizontally and vertically by passing the co ordinates at any position, how can i achieve this.

getSubimage(x,y,w,h)

thanks with regards,
Rodricks.

[Ulf Dittmer]

The code you posted has a bug. Compare the height of the two images with the heigth of the original one. Then have a look at the pseudo-code I posted before.

If i want to split horizontally and vertically by passing the co ordinates at any position, how can i achieve this.

Not sure I understand what you're asking. If you know at which position you want to split the image, you can use appropriate parameters in the call to getSubimage.

[Rodricks george]

Yes.. Thank you sir.. I solved the problem