http://imagej.273.s1.nabble.com/Use-Rank-rankFloat-RankFilters-in-a-plugin-tp3693843p3693846.html
That was what I was looking for. Thank you very much!
> On Feb 5, 2009, at 10:37 AM, joris meys wrote:
>
> Thank you very much. Tried it, but I seem not to be able to get it run on
>> the right image. it should run on the image processor ip2 in the code, but
>> it destructively changes the first slice in the original stack. Any way of
>> getting around that one?
>>
>
> IJ.run("Median...","radius="+radius) runs on the current slice of the
> current stack. You can call the rank() method of the RankFilters class to
> median filter an ImageProcessor. Here is a JavaScript example:
>
> importClass(Packages.ij.plugin.filter.RankFilters)
> img = IJ.getImage();
> ip = img.getProcessor();
> filter = new RankFilters();
> radius = 3;
> filter.rank(ip, radius, RankFilters.MEDIAN);
> img.updateAndDraw();
> IJ.showProgress(1);
>
> -wayne
>
>
>
>
>> Kind regards
>> Joris
>>
>> Code :
>> public static ImageProcessor getDeriche(ImageProcessor ip, float alpha,
>> double radius){
>> int type = getType(ip);
>> if (type==OTHER){
>> IJ.showMessage("Deriche works only on greyscale or
>> pseudocolored
>> images");
>> return null;
>> }
>> ArrayList<double[]> arrays = null;
>> ImageProcessor ip2= ip.duplicate();
>> //if (radius > 0)ip2 = applyMedian(ip2, radius); // to the function
>> I copied from rankFloat.
>> if (radius>0)IJ.run("Median...","radius="+radius);
>>
>> arrays = dericheCalc(ip2,alpha); // self-defined function
>> double[] norm = arrays.get(0);
>> double[] angle = arrays.get(1);
>> FloatProcessor normfp = new FloatProcessor(ip2.getWidth(),
>> ip2.getHeight(), norm);
>> normfp.resetMinAndMax();
>> FloatProcessor anglefp = new FloatProcessor(ip2.getWidth(),
>> ip2.getHeight(), angle);
>> anglefp.resetMinAndMax();
>> ip2 = nonMaximalSuppression(normfp, anglefp);
>> return ip2;
>> }
>>
>>
>>
>> On Thu, Feb 5, 2009 at 3:53 PM, Wayne Rasband <
[hidden email]> wrote:
>>
>> Dear Joris,
>>>
>>> On Feb 5, 2009, at 6:48 AM, joris meys wrote:
>>>
>>> Dear all,
>>>
>>>>
>>>> I'm writing (yet another) plugin for edge detection, and i want to apply
>>>> the
>>>> median filter, but not with a 3x3 kernel but with a circular mask. I
>>>> know
>>>> I
>>>> can run the command with IJ.doCommand("Median"), but when I try that (or
>>>> IJ.run), I get the message "image locked". with
>>>> IJ.RunPlugIn("Median",null),
>>>> I get simply nothing.
>>>>
>>>>
>>> You can avoid the "image locked" error by changing your plugin so that it
>>> implements the PlugIn interface instead of PlugInFiler and run the median
>>> filter using
>>>
>>> run("Median...", "radius=1");
>>>
>>> -wayne
>>>
>>>
>>>
>>> Plus, I don't want the image filter to open, I just want to apply the
>>>> method
>>>> rankFloat to my imageprocessor with a fixed radius. I tried accessing
>>>> the
>>>> method, but got (off course) the static/nonstatic error. Tried to
>>>> instantize
>>>> RankFilters and do it that way, but that didn't want to work either.
>>>> Right
>>>> now, I copied the code of rankFloat() and adjusted it for my own use. It
>>>> works, but it's not really elegant to say at least.
>>>>
>>>> Anybody who knows to do this right?
>>>> Kind regards
>>>> Joris
>>>>
>>>>
>>>>
>>>
>>