find cirlces in image

[Cory_K]

Does LabVIEW have any functions that can view an image, and pick out cirlces?

I have some JPG files that contain the following images:
The background is almost entirely white.

There are black (pretty much circular) blobs, about 4 per image.

Is there a function that can open a JPG file and find the circles? Or would I need some NI Toolkit?

The reason I would need such a function would be to do some geometry such as surface area, etc.

[tinnitus]

hello Cory K,

if i remember well, it seems  when i were testing lv 8.6 evaluation that there were images fonctions

dedicated to analyse, filter an count particules

regards

Tinnitus

....in a specialised toolkit , Vision i think

Message Edité par tinnitus le 01-14-2009 06:13 PM

Message Edité par tinnitus le 01-14-2009 06:17 PM

[Vivek_N · Accepted solution]

Hello Cory,

You will need the Vision Development Module in order to perform such image processing (http://sine.ni.com/nips/cds/view/p/lang/en/nid/2881). One of the VIs that comes with this software is 'IMAQ Find Circles' which would be able to detect the circular blobs. You can download the software and evaluate it forr a period of 30 days if you would like. 

I hope this helps. 

[Cory_K]

Thats (unfortunately) what I thought. OK, I will look into that.