extract largest particle from unknown number of particles

[shreya111]

Hello,

          Suppose I have 3 nuts having diameter 0.6 cm, 0.8 cm and 1 cm respectively. I want to pass 1 cm nut and reject other ones with the help of their areas using particle analysis and it should also show its area on front panel.

I  chose Heywood Circularity factor in particle filter 3 vi and Heywood Circularity factor, Center of mass X and Area in Particle Analysis vi. 

The problem is -

1 It sometimes accept another particles when I move the nut on another places .

2. the particle area it showing is different at different locations.

3. It doesn't showing exact no of particles .

I am attaching my VI and respected snapshot. Please give me valuable suggestions.

Waiting for favorable reply.

Thanks

[GybrushThreepwood]

OId Topic, but still helpful! Thanks for the example! I've really had problems with too many particles found with the particle analysis calculating forever and could now nicely speed up by using your suggestion of particle filtering before particle analysis!