Measuring tool

[Dave Allen]

Hi guys,
 I am looking for a tool that an operator can select an area of an image and
then ImageJ will automatically measure the length and width of a feature and
calculate it's aspect ratio.

Does anyone know if this exists
Thanks

--
David Allen
Nanomaterials Processing Laboratory
Research Institute for Networks & Communications Engineering (RINCE)
School of Electronic Engineering
Dublin City University
Dublin 9

Ph: [phone];
Email: [hidden email]; [hidden email]

[Graham Wright]

Hi David,

Sorry if this is not what you were looking for, but you can get ImageJ to
measure these factors by:

Analyse>Set Measurements - and check area and shape descriptors.

Drawing an area can be done using the rectangle or any of the other shape
tools, then press
*
*
*cntrl/command M* or go Analyse>Measure

However if you want to select areas based on the intensity or colour of the
pixels you'll have to first threshold and segment the image, but you can
then interrogate all of the regions of interest found in the entire image in
one go.

Regards,
Graham

--
*Graham Wright, PhD*
Microscopy Unit Manager

Institute of Medical Biology
8A Biomedical Grove, #06-06 Immunos, Singapore 138648

O:   [phone]
E:   [hidden email]
W:  http://www.imb.a-star.edu.sg/imu/


On 18 January 2011 16:38, Dave Allen <[hidden email]> wrote:

> Hi guys,
>  I am looking for a tool that an operator can select an area of an image
> and
> then ImageJ will automatically measure the length and width of a feature
> and
> calculate it's aspect ratio.
>
> Does anyone know if this exists
> Thanks
>
> --
> David Allen
> Nanomaterials Processing Laboratory
> Research Institute for Networks & Communications Engineering (RINCE)
> School of Electronic Engineering
> Dublin City University
> Dublin 9
>
> Ph: [phone];
> Email: [hidden email]; [hidden email]
>