Algorithm for oval shape detection

[johnlee90]

I still not understand about plain LABVIEW. I using LABVIEW 2011 is it a plain LABVIEW?
1 more question is LABVIEW has function block about to detect the oval assuming that the threshold and morphological already done?
Thank you.

[johnlee90]

I have try to use IMAQ detect shape to detect the ellipse in the image in the ni vision assistant. From there the detected ellipse will be surrounded by a red color line. But when I try in the LABVIEW I only get the number of ellipse matches result. How I do to get the detected ellipse surrounded by red color line in image shown. I have attach with the VI, the image I used and also the ni vision script for shape detection. Thank you for the helping.

[johnlee90]

Sorry upload wrong picture. Should be this picture I used. The value of minimum score set to 990 then I will show only 3 ellipse. Anyone can help me to show the 3 ellipse in the image with a red color surrounded it. Thank you.

[Lucas.Chen]

IMAQ toolbox is mostly designed for machine vision system, which means relative good images like good contrast, illuminations are needed. The image "test.jpg" is quiet poor for finding the edge or contour, I don't think it can be easily processed by IMAQ VIs to get right result, unless you do quiet lots of preprocess to improve the image quality. 

I suggest if poor image need to be processed, you'd better to do searching from google scholar with some key words as, 'white blood cells', 'segmentation', and so on. There are plenty of complicated but powerful algorithm to process images such as "test.jpg" image. Then using Labview+IMAQ to realize the algorithm. Not easy but seems there is no better way to achieve your purpose.