Motion builder

[ajita24patil@gmail.com]

Hello everyone.

I am doing my final year project in labview. I am very new to this software.

I want to know some details about vision builder.

As i am working on video  i have an .avi file and i want to search for some regions and then want to find out some standard values from that.

i want to know following points:- 

                       1. How to detect a ROI in video continuously?

                       2. Can we interface usb webcam to vision builder?

                       3. How to detect circles in specified area in an video?

                       4. Can we use mathscript in vision builder?

if anyone have any idea regarding these topics then please let me know.

Expecting a positive reply.

Thank you in advance.

[Christian Mergl]

Hi,

1. How to detect a ROI in video continuously?

This is not directly possible in Vision Builder AI (VBAI). You will need LabVIEW and the Vision Development Module to create a VI which extrats the individual frames of your avi file.

In VBAI you can run this VI using the "Run LabVIEW VI" Step and get a single frame to inspect with every call of the VI.

2. Can we interface usb webcam to vision builder?

Yes. Since VBAI 2009 you can interface USB cameras through the DirectShow Interface.

3. How to detect circles in specified area in an video?

VBAI provides a Step called "Find Circular Edge" which does this.

4. Can we use mathscript in vision builder?

Again not directly, but you can call a LabVIEW VI which performs the MathScript.

Overall I would rather suggest to use LabVIEW and the Vision Development Module for task instead of VBAI.

Christian

[ajita24patil@gmail.com]

I am very thankful for your reply.

I was using labview before learning to vision builder. In labview, i was practicing with vision assistant but i dont get enough results.

I have done video capture with the help of acquisition and now i want to do some image processing steps.

I also have tried circle edge detection like concept in builder and in assistant too. But still i am not getting the results.

Please let me know if you get any information,