Which function is for "first glance" to know there is any objects in the image?

[Swedlin@hotmail.com]

Assume that a VI have grabbed an image with good enough quality for further analysing. Which function or way can be meant for FIRST DECISION in which the VI knows there are any objects in the image or not? (Under IMAQ Builder 6). For example, fibers are similar but no any rigirous physic demension, see attached file. Thank u very much!

Cheer!
Swedlin

[BruceAmmons]

Swedlin,

I would probably threshold, either manual or automatic, then use Binary Particle Analysis (or Particle Filter) to determine if any particles are larger than a certain area (or length, etc.) If all your particles are small, they are probably not fibers. I would probably set an upper limit, because if there are no fibers automatic thresholding will pick up the next item in the image.

This would be a little easier in LabVIEW, because you have more decision making capabilities.

Bruce