Low-cost Remote Eyetracking Accuracy Test

Towards easy-to-use and robust low-cost eyetracking systems. Version of 3 August 2008.

Category:

Howto & Style

Tags:

• eye
• tracking
• eyetracking
• low-cost
• easy
• robust
• machine
• vision
• C++
• C#
• OpenCV
• Margetshöchheim
• Piechulla

[oVISIONo]

Hi Walter, one more question...

Do you think I could get better results tracking both eyes than just one?.

Thanks.

[piechulla1966]

Maybe. I'm sure I don't know.

[oVISIONo]

no problem...

Another question. Do you use the homography matrix to calculate the gaze point?

thanks.

[piechulla1966]

No, I do not. BUT: "All mappings provide reasonable accuracy. However, the second-order mapping and homographic mappings result in the best performance." (Denghong Li, 2006,p. 43).

Li, D. (2006). Low-cost eye-tracking for human computer interaction. Masters Thesis, Iowa State University Human Computer Interaction Program.

Please find this valuable document on the web if you havn't already got it.

[oVISIONo]

Hi Walter,

Could I ask you what software do you use to capture all that screens in one? thanks.

[piechulla1966]

Only the left-top quadrant contains what is captured. The rest just helps me to see what's going on in different levels of processing. See: OpenCV library wiki --> Frequently Asked Questions --> How to display more than one image in a single window?

Cheers, have fun!

[ak2agent26]

@oVISIONo yeah i read in some paper that it reduces the inaccuracy of by averages

[oVISIONo]

Thanks for your answer Walter.

I will check it out.

[oVISIONo]

Thanks a lot for your answer! That's what I was looking for...

[oVISIONo]

Thanks Walter. I will check it out.