Problem in JAI scale factor

Question

I am using scale method for Zooming purpose.So i set scale factor as 0.5 for Zoom-in and 1 for Zoom-out.First I load the image,then i perform Zoom-in to make fit width.After Zoom-in,i am getting the image co-ordinates which is totally different from that of original.But actually what I need is the image co-ordinates to be same when i Zoom-in or Zoom-out. So i think Scale in JAI is only for Resize and not for Zoom.So please provide me the solution for Zooming as early as possible.
Thanking You,
Kannan

Answer 1

I am not saying it will work, but I would ask if you tried "Dilate"? I don't know what the parameters are supposed to be for the different methods, but I do know how to get a listing of them. See the code below:
          OperationRegistry ory = JAI.getDefaultInstance().getOperationRegistry();
          String [] temp = ory.getRegistryModes();
          String []temp2;
          for (int which = 0; which < temp.length; which++) {
               temp2 = ory.getDescriptorNames(temp[which]);
               System.out.println("\t"+temp[which]+":");
               for (int cual = 0; cual < temp2.length; cual++) {
                    System.out.println("\t\t"+temp2[cual]);
That will get you a listing of all of the registry modes and the descriptor names within each mode. For parameters and explanations, well, I guess check out the source code for the JAI library and then rifle through it until you find an example, or use trial-and-error, since the only documentation seems to refer to deprecated calls (as I have noted in the most recent version of JAI).