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Approved-By: [log in to unmask]
References: <[log in to unmask]>
Content-Type: text/plain; charset=UTF-8
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Message-ID:  <[log in to unmask]>
Date:         Thu, 6 Dec 2007 10:44:44 -0500
Reply-To:     ImageJ Interest Group <[log in to unmask]>
Sender:       ImageJ Interest Group <[log in to unmask]>
From:         Younes Leysi Derilou <[log in to unmask]>
Subject:      Re: zooming on a region
In-Reply-To:  <[log in to unmask]>

Hello Dear Audrey,

Thanks so much for your nice attention to my email and sending the macro. I
saved the text as a macro in the IJ macros folder, opened an image and then
run the macro. it shows an error that ''undefined variable in line 1
<import> ij.*". this comes up either I chose a region or not before running
macro. sorry i am not good in macro writing. If I put "//" in the first
line, the same error comes up for the next lines. I would appreciate it, if
you could let me have a macro that I can run it easily.

Thanks so much and best regards,
Younes

On Dec 5, 2007 1:56 PM, audrey karperien <[log in to unmask]> wrote:

> Hi.  Wayne recently helped me with the below plugin, which I used to make
> some animations for a presentation.  It zooms in until the selected area is
> the full screen size then you save the stack of images as an animation in
> ImageJ.  I have been saving the stack as avi or animated gif files, but in
> the code here I slipped in a line that will also save it as an avi into the
> ij path, which you can uncomment // IJ.saveAs("AVI... ", "myfileZoom.avi")
> and change to save where you want.  For animated gifs, I use the gif stack
> writer plugin.  This code zooms from the onscreen image down to the
> selection size, using a gradient set differently each time, which is what I
> needed, but Wayne wrote some code that zooms starting with the selection and
> the way he did it is smoother and faster, I just haven't fully implemented
> it in this yet; you can find it in the list a few weeks back or email me and
> I will find it for you. Hope this helps.
>
> import ij.*;
> import ij.gui.Roi;
> import ij.gui.StackWindow;
> import ij.plugin.*;
> import ij.process.ImageProcessor;
>
> public class zoomer_ implements PlugIn {
>
> public int height = 100;
> public int width = 100;
> public int roiheight = 100;
> public int roiwidth = 100;
>
> String NAME;
>    public void run(String arg)
>        {
>            ImagePlus img=IJ.getImage();
>            height=img.getHeight();
>            width=img.getWidth();
>            Roi roi = img.getRoi();
>            if (roi==null)
>            {
>                IJ.showMessage("Please select an roi then try again");
>                return;
>            }
>
>            String NAME=img.getTitle();
>            double scale=80;
>            scale=IJ.getNumber("Rate of Scaling (%)?", (double)scale);
>            roiwidth=(int)roi.getBounds().getWidth();
>            roiheight=(int)roi.getBounds().getHeight();
>            int w =(int)( width*(scale/100f));
>            int h = (int)( height*(scale/100f));
>
>            int cx = (int)roi.getBounds().getCenterX();
>            int cy = (int)roi.getBounds().getCenterY();
>           //scale it each time by the same amount
>            //the user determines the amount by
>            //inputting a number for the rate of scaling
>            //e.g., if the rate of scaling is 50,
>            //then the roi is always 50% of the current size
>
>            ImageStack s= new ImageStack(width, height);
>           ImageProcessor ip = img.getProcessor();
>           ip.snapshot();
>           for (int i = w, j = h;
>                (i > roiwidth)&&(j>roiheight);
>                i=(int)( i*(scale/100f)), j=(int)( j*(scale/100f)))
>                {
>                    IJ.makeRectangle
>                            (cx-i/2,cy-j/2, i, j);
>                    IJ.run("Size...",
>                            "width="+width+
>                            " height="+height+
>                            " constrain interpolate");
>                    String name=NAME+i;
>                    if(WindowManager.getCurrentImage
> ().getHeight()!=height||
>                            WindowManager.getCurrentImage
> ().getWidth()!=width)
>                    IJ.run("Canvas Size...", "width="+width+
>                           " height="+height+" position=Center");
>                    s.addSlice(name, img.getProcessor().duplicate());
>                               // WindowManager.getCurrentImage
> ().getProcessor());
>                    IJ.run("Revert");
>                }
>            IJ.run("Revert");
>            img.setRoi(roi);
>            StackWindow sw=new StackWindow(new ImagePlus(NAME+"Zoom", s));
>            sw.setVisible(true);
>   // IJ.saveAs("AVI... ", "myfileZoom.avi");
>
>        }
>
>
> }
>
>
>
> ----- Original Message ----
> From: Younes Leysi Derilou <[log in to unmask]>
> To: [log in to unmask]
> Sent: Wednesday, December 5, 2007 7:11:28 AM
> Subject: zooming on a region
>
> Hello ImageJ Users,
>
> I am wondering if there is a pluging to do zooming in/out in an image
>  or
> image stack and save this action as a movie.
> any help is highly appreciated in advance.
>
> Sincerely,
> Younes
>

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