What does blobs.gif represent?

[Giorgio De Nunzio]

Hi all,
a student of mine is using the well-known blobs.gif in a dissertation, to
demonstrate some image analysis procedures. I need some information on
what the image represents, and about the image author/owner, so the
student can describe what the blobs are, and give due credits.
Can someone help me?
Thanks
Giorgio

_____________________
Giorgio De Nunzio
University of Salento
Italy

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[Mauro Maiorca]

Dear Giorgio,

according to Meijster and Roerdink [1] the image represents "gold
particles". Not sure what image modality it is, I would speculate it comes
from either an x-ray or a transmission electron microscope.

cheers,
Mauro


[1] A. Meijster, J. B. T. M. Roerdink
"Computation of Watersheds Based on Parallel Graph Algorithms"
Mathematical Morphology and its Applications to Image and Signal Processing
Computational Imaging and Vision Volume 5, 1996, pp 305-312




On Sat, Oct 5, 2013 at 5:56 PM, Giorgio De Nunzio <
[hidden email]> wrote:

> Hi all,
> a student of mine is using the well-known blobs.gif in a dissertation, to
> demonstrate some image analysis procedures. I need some information on
> what the image represents, and about the image author/owner, so the
> student can describe what the blobs are, and give due credits.
> Can someone help me?
> Thanks
> Giorgio
>
> _____________________
> Giorgio De Nunzio
> University of Salento
> Italy
>
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>

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[dscho]

Hi Giorgio,

On Sat, 5 Oct 2013, Giorgio De Nunzio wrote:

> a student of mine is using the well-known blobs.gif in a dissertation, to
> demonstrate some image analysis procedures.

Please note that the histogram of blobs.gif suggests that it only contains
5-bit data, and as such, it might not necessarily be a good example image
for the technique your student wants to demonstrate.

Ciao,
Johannes

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[Giorgio De Nunzio]

Hi Mauro, thank you very much for the info!
Best regards
Giorgio

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[Giorgio De Nunzio]

Hi Johannes,
thanks for your kind reply!
The student is applying simple genetic algorithm driven segmentation techniques: she shows how to separate those particles that look united, by using a population of evolving ellipses (roughly modeling the single particles).
It worked great because she just needed blobs edges.
Thanks again!
Best regards
Giorgio

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