Re: Fractal Dilation Macro

Posted by dinurf on
URL: http://imagej.273.s1.nabble.com/Fractal-Dilation-Macro-tp5015153p5015170.html

Hi Jeremy,

Is that like this?
First, I opened the image that I want to analyze.
Second, I go to Process >> Binary >> Distance Map. The original image
became as shown on the left (1.JPG).
Afterwards, I go to Analyze >> Histogram. Histogram emerged, as shown in
the middle. I click on "List" menu below the histogram and I got a table on
the right. What are value and count? Are those the diameter and the area?

I ask your guidance. Thank you.

Dini



​

On Mon, Dec 7, 2015 at 8:35 PM, Jeremy Adler <[hidden email]> wrote:

> You don't need a complicated macro.
>
> All possible dilations are contained in the Distance Map made from the
> outline - and can be output using a histogram.
>
> The histogram gives the area of a band at each radius and the cumulative
> histogram (could generate in Excel or a  macro) gives the area at each
> radius.
>
> A bigger problem is that many shapes do not produce a linear relationship
> in the final log log plot.
>
> Adler J & Hancock D, Powder Technology, 1994, 78,191-196.
>
>
>
> -----Original Message-----
> From: ImageJ Interest Group [mailto:[hidden email]] On Behalf Of
> SUBSCRIBE IMAGEJ Dini
> Sent: den 7 december 2015 03:45
> To: [hidden email]
> Subject: Fractal Dilation Macro
>
> Hello All,
>
> I am working on fractal dimension using Dilation method. I found a macro
> for Dilation method but the macro runs under NIH Image. When I run the
> macro on ImageJ, it did not work. How to change the command so that be able
> to be run on ImageJ?
> Please find the macro below.
>
> Regards,
> Dini
>
> =============================================================
> FRACTAL DILATION MACRO
>
>         The FRACTAL DILATION Macro is a macro that runs under NIHImage, v.
> 1.58 and later.  It performs the measurements that allows one to calculate
> the so-called "capacity" fractal dimension.  The algorithm is called, in
> fractal parlance, the "dilation" method.  It is meant to work on an image
> that is a one pixel wide, binary (black on white) border.
> The output is a named file with 3 columns.  The first is a list of the
> disc kernel sizes.   Th 2nd is a list of the average counts [area] for all
> kernal sizes and the 3rd is the area/kernel size to give equivalent length.
>
>
> macro 'Fractal Dilation';
> var
>   iterations,i:integer;
>   tab:string;
> begin
>   SaveState;
>   iterations:=64;
>   tab:=chr(9);
>   SetFont('Monaco');
>   SetFontSize(9);
>   ResetCounter;
>   SetBinaryCount(1);
>   NewTextWindow(concat(WindowTitle, '-Counts'), 140, 350);
>   MoveWindow(500,50);
>   Measure;
>   writeln(1:3, tab, histogram[255]:7, tab, histogram[255]:5);
>   for i:=1 to iterations do begin
>      Dilate;
>      Measure;
>      writeln(i*2+1:3, tab, histogram[255]:7, tab,
> histogram[255]/(i*2+1):5);
>   end;
>   RestoreState;
> end;
>
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