low cost eye tracker

[isaoz]

I am not sure where the best forum would be to post this. I basically need to design a low cost eye tracking system using a 1394 or usb camera fairly quickly. I was hoping to adapt some of those machine vision VIs that measure size, distance, length etc. to measure the position of the eyes from a live full head image in real time, say at 10fps. Can you give me hints as to where I should post the question, where I can find example codes and how quickly I can do it if it is possible? I use Labview 8.5 and have NI Vision and Vision Assistant 8.5.

[Ben]

Try re-posting to the machine vision forum found here.

The resolution of your camare is going to play a big part in how well this will work. I trid use an "average" camera* to do this in LabVIEW to save wear and tear on my wrists. My eye end up such a small part of the image that I could not get any meaningful info from it.

Ben

*It was just what I found in a box in the corner of my boss's office.

[isaoz]

I was thinking of using a standard 640x480 resolution camera but I could probably go lower to 320x240 if performance becomes an issue, unless the lower resolution creates another problem. Did you try zooming or getting closer to the face like framing the upper half of the face to improve tracking? Anyway, is it possible to send me the vi you used so I can experiment with it? I am sure it will save me a lot of time. Thanks

[Ben]

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isaoz wrote:
I was thinking of using a standard 640x480 resolution camera but I could probably go lower to 320x240 if performance becomes an issue, unless the lower resolution creates another problem. Did you try zooming or getting closer to the face like framing the upper half of the face to improve tracking? Anyway, is it possible to send me the vi you used so I can experiment with it? I am sure it will save me a lot of time. Thanks

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Sea Story time!

In the old days we used to rebuild disk drives when they crashed instead of just throwing them away. So after a disk drive re-build and test-out one of my co-workers was standing being the the rack of disk drives with his customer when they noticed brown dust being blown out the back of the drive he just re-built. The conversation went...

Customer: What is that!?

Co-worker: Data

Sorry but that code is long gone. When asking your Q on the other forum, please ask about what type of resolution you will need.

I suspect with the types of cameras you mentioned it would only work if you strapped yourself down into one of those chairs they used the movie "A clockwork Orange".

 

Ben

[The_Chancenator]

Hi isaoz,

As Ben advised, please do go ahead and post your question on the Machine Vision forums as those who peruse those forums are more familiar with vision-related questions. 

Thanks!

[The_Chancenator]

new post can be found here