if you wonder about the values displayed in the plot ..
.. they are calculated by :
h is the height of the image.
> Dear Peter,
>
> Thanks for the help.
> What the roughness as such concerns is not a problem because I use a dedicated software for that, allowing me measuring according DIN, ASTM norms with cut-off filtering and related roughness parameters.
>
> I will test the little macro and see from there.
>
> Braekevelt Martin
> Global Metallographic Lab Process Owner(GLaM)
> Oude Heerweg 5
> 8540 DEERLIJK
> Tel. +32 56 767114
> Mobile :+32475805738
>
>
> -----Original Message-----
> From: ImageJ Interest Group [mailto:
[hidden email]] On Behalf Of Peter Haub
> Sent: Monday, December 14, 2015 9:59 AM
> To:
[hidden email]
> Subject: Re: profile extraction
>
> Dear Martin,
>
> here is a VERY simple macro that extracts some information of the edge profile.
> Copy it into a macro window and run :
>
> setOption("BlackBackground", false);
> run("Make Binary");
> run("Invert");
> run("Select All");
> run("Plot Profile");
>
> Maybe this is all you need.
>
> But this information can not be used as a direct roughness measurement since it is distributed along a circular shape. A better strategy would be to approximate a circle to this 'simple' data and to measure the edge positions in the original image with sub-pixel accuracy along this circle.
>
> Regards,
>
> Peter
>
> On 14.12.2015 02:22, Braekevelt Martin wrote:
>> Dear all,
>>
>> I am only starting using imageJ, but I am doing metallograpy for 30 years already.
>> In the past I was using an open software platform software, with macro scripting and module building, now we are forced to change due to windows 7 to change for other software, so that's how I find imageJ.
>> My most urgent concern is to transform our roughness measurement module.
>> All I need is to collect the xy coordinates from a profile determined by a circle segment.
>> I included an example image in annex.
>> With the old software this was done by simple tresholding to select the data for segmenting.
>> I think within imagej there are multiple ways to get this profile plot.
>> It would be a great help to get some advice from experienced users, what would be the best way to extract that profile and record the xy coordinates into a txt format for further processing with our dedicated roughness software.
>> I know that imagej is mainly used by people from the biological, medical science, I am interested if there are also other metallography science users.
>>
>> Braekevelt Martin
>> Global Metallographic Lab Process Owner(GLaM) Oude Heerweg 5
>> 8540 DEERLIJK
>> Tel. +32 56 767114
>> Mobile :+32475805738
>>
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