Re: create an image according to its radial profile

Posted by Herbie on Oct 07, 2016; 3:11pm
URL: http://imagej.273.s1.nabble.com/create-an-image-according-to-its-radial-profile-tp5017303p5017315.html

Dear Michael,

as I've written, in case the 1D-function is given as samples (list),
interpolation is required and can be achieved with a ImageJ-plugin.

I don't know about such a plugin, but it may exist. Otherwise you need
to write it...

Best

Herbie

:::::::::::::::::::::::::::::::::::::::::::
Am 07.10.16 um 16:43 schrieb Michael Elbaum:

> No, I have it as a list. Each point corresponds to a radius I want to
> represent in the 2D image, equally spaced so matching "pixels"
> perfectly on the axes. Interpolation is needed around the arcs.
> best, Michael
>
> ________________________________________ From: ImageJ Interest Group
> [[hidden email]] on behalf of Herbie [[hidden email]] Sent:
> Friday, October 07, 2016 17:33 To: [hidden email] Subject: Re:
> create an image according to its radial profile
>
> Dear Michael,
>
> is the 1D-function given analytically?
>
> If no, was it sampled according to the sampling theorem?
>
> In the first case it is easy to write a macro that performs what you
> want. In the second, interpolation should help, but I fear a plugin
> will be necessary.
>
> Best
>
> Herbie
>
> :::::::::::::::::::::::::::::::::::::::::::: Am 07.10.16 um 16:18
> schrieb Michael Elbaum:
>> Thanks for the suggestions, but still it doesn't work. Maybe my
>> concept is off. I have a 1D radial function that I want to
>> represent as a 2D image where the intensity at each pixel depends
>> on its radial distance to the center. This should be like mirroring
>> the function at the center of a 1D image (of twice the width) and
>> drawing circles matching the intensity at each point on the axis
>> across the second dimension. The polar transformer plugin is giving
>> me a smeared cross shape with max intensity on the x and y axes.
>> Maybe it will be easier to fill the image in pixel by pixel taking
>> care of the interpolations. regards, Michael
>>
>> ________________________________________ From: ImageJ Interest
>> Group [[hidden email]] on behalf of Gabriel Landini
>> [[hidden email]] Sent: Friday, October 07, 2016 16:11 To:
>> [hidden email] Subject: Re: create an image according to its
>> radial profile
>>
>> On Friday 07 Oct 2016 12:25:50 you wrote:
>>> You can try or modify this plugin:
>>> http://imagejdocu.tudor.lu/doku.php?id=plugin:analysis:radial_thickness_meas
>>>
>>>
>
>>>

ure:start

>>> regards Robert
>>
>> It is not possible to modify that plugin unless you provide the
>> source code (*.java file) for download.
>>
>> Regards
>>
>> Gabriel
>>
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>
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