topic Re: Vision Assistant FRC in LabVIEW

Vision Assistant FRC

OldJohnM — Thu, 27 Oct 2016 20:16:03 GMT

Hi All

I am a new to labVIEW mentor for a FRC robotics team.

I am trying to learn to use Vision Assistant, Looking for really simple examples. Just getting started.

Found a series by Jim Chastain but unable to duplicate his results.

Trying to process images, Vision Assistant complains the it only works on 8 bit images.

The images I acquire are RGB 32 bit. It has to be simple but has me frustrated.

Thanks in Advance

Re: Vision Assistant FRC

natasftw — Thu, 27 Oct 2016 23:06:54 GMT

You'll get more helpful replies going to www.ni.com/frc Most people on these forums have never seen the FRC API.

Do the examples in Help->Find Examples for Vision work for you?

Re: Vision Assistant FRC

udka — Fri, 28 Oct 2016 02:40:49 GMT

You need to understand the image types available and which process takes what type of images.
The algorithm which you are trying to process requires Grayscale (8 bit) and your image is RGB (32 bit), to convert you need to look for extract single color plane and then check it should work.

Re: Vision Assistant FRC

ChristopheC — Fri, 28 Oct 2016 13:58:25 GMT

Good answer, Uday.

A good resource to get started with Vision Assistant is to follow the tutorial (VA_Tutorial.pdf) located in the Documentation folder:

C:\Users\Public\Documents\National Instruments\Vision Assistant\Documentation

If the goal is to integrate the Vision algorithm in a more complex VI, use the Vision Assistant Express VI from your main VI.

You can access it from the Vision And Motion>>Vision Express palette.

Christophe

Re: Vision Assistant FRC

OldJohnM — Fri, 28 Oct 2016 16:54:04 GMT

Thanks everyone. Just me being slow. Didn't know about the ni.com/frc

Re: Vision Assistant FRC

GKlab — Tue, 10 Jan 2017 19:37:04 GMT

Please do check these pages:

http://www.frcmastery.com/labview-for-frc/2011-frc-steps-to-robot-success/

http://forums.ni.com/t5/FIRST-Robotics-Competition/FRC-2013-Basic-and-Advanced-Training/ta-p/3535726