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RSS >  [Résolu - Solved] Help me :-(
pirci #1 06/09/2007 - 18h45

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Hi all ,
First, i'm sorry for my english : p i n c h :

I have bigs problems whit your wonderfoul application...
I'v got 4 IR LEDs (SFH485P) on an helmet , following the tutorial , and a Logitech Quickcam Chat.

Now, setting up Freetrack is easy, i got 30 fps , but i cant have a good tracking because my webcam cant see easly all my LEDs...i put a negative (black part) on my webcam but nothing is changed....i see some "x" around IR leds , but these "x" appear and disappear ...and i got a bad tracking.... what i can do?

Pls help me : (

Moved by Didja in "Do you speak English" forum.  ; )
Edited by didja on 06/09/2007 at 19h26.
francoistarlier #2 06/09/2007 - 19h10

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try to blur your webcam image by turning the lens, becareful about the environment lighting, play with exposure on your driver camera and with the treshold on the freetrack application
that should do it, if I understood your problem well !
jbalat #3 07/09/2007 - 02h02

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To get best results use a dark enviroment with nothing bright behind you
einsena #4 07/09/2007 - 05h14

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pirci @ 06/09/2007 - 20h45 a dit:

Hi all ,
First, i'm sorry for my english : p i n c h :

I have bigs problems whit your wonderfoul application...
I'v got 4 IR LEDs (SFH485P) on an helmet , following the tutorial , and a Logitech Quickcam Chat.

Now, setting up Freetrack is easy, i got 30 fps , but i cant have a good tracking because my webcam cant see easly all my LEDs...i put a negative (black part) on my webcam but nothing is changed....i see some "x" around IR leds , but these "x" appear and disappear ...and i got a bad tracking.... what i can do?

Pls help me : (

Moved by Didja in "Do you speak English" forum.  ; )



i use logitech quickcam too, sounds like you have a slight gain and threshold problem.

try  this:
1. adjust the threshold slider. use the I420 freetrack color compression
Posted Image

the following settings below are for Logitech Quickam Software
2. Try adjusting the gain and exposure of logitech quickam software
Posted Image

3. (Optional) try my settings below for better response
Posted Image

4. my logitech webcam are also able to pick up IR lights without modifying it first. but the IR light sensitivity are not that good it losts track when i move my head side to side, maybe if you mod your webcam to capture IR lights only then it'll work better. also sand papering your IR LEDs are highly recomended.

here's some disscusion about IR LEDs and sandpaper
http://freetrack.online.fr/forum/index.php?showtopic=126

here's some how to Convert your Webcam to an IR Webcam
http://www.hoagieshouse.com/IR/
*note i haven't tried to mod mine i use regular red LEDs.
good luck!
pirci #5 07/09/2007 - 07h10

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Tnx dude  : )
When i'm @ home i'll try your settings....my problem is that sometimes i have more than 1 little "x" every LED...but one more question...
In i420 compression i got "red stripes" on my screen....what i can do?



PS: My power supply is an usb cable , and i used one 100 ohm resistor every LED
Edited by pirci on 07/09/2007 at 08h42.
einsena #6 07/09/2007 - 08h55

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pirci @ 07/09/2007 - 09h10 a dit:

Tnx dude  : )
When i'm @ home i'll try your settings....my problem is that sometimes i have more than 1 little "x" every LED...but one more question...
In i420 compression i got "red stripes" on my screen....what i can do?



PS: My power supply is an usb cable , and i used one 100 ohm resistor every LED



never had that problem, but i've read somewhere on this forum that if such a problem occur then try diffrent filters.

1.access freetrack folder via your windows start menu

2.there should be a freetrack folder there

3.select filters

4.try diffrent filters

5.if all the filters fails to fix your problem then maybe your webcam doesn't support I420 color compression.

6.if all else fails contact the_target - babasior - tristan68 - Kestrel lol!
good luck!
pirci #7 07/09/2007 - 09h29

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Tnx all guys !  : )

I'll try ^_^
pirci #8 07/09/2007 - 16h51

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Thx u all guys!!!
My tracking is wonderfoul now ; D

gr8t software, i love it!!!! : D

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