FreeTrack Forum

Welcome, you're not connected. ( Log in - Register )

FreeTrack Forum > FreeTrack : English Forum > Support : FreeTrack Software > camera having trouble picking up leds

RSS >  camera having trouble picking up leds
connla #1 24/05/2013 - 17h08

Class : Apprenti
Posts : 9
Registered on : 24/05/2013

Off line

Ok I have a very small office space and the distance between my hdtv and where I am seated is less then half a metre.

But the camera cant pick up the leds on my headset unless I put one of them right up against the lense

I am at step 5 on this guide: https://docs.google.com/document/d/1Ij7vljnl6wGIxsw3xsVRUGNwP2J5cRLQwfrsC9adJ-o/edit

(its also where I got the headtracking set up)

and I cannot get 3 red dots to appear from me looking right at the camera from my sitting position, I need to literally put the led from my headset against the filter for it to appear and once I start to bring the headset back it vanishes.

Any advice?
Stormrider #2 24/05/2013 - 18h33

Class : Légende du Forum
Posts : 466
Registered on : 02/01/2013

Off line

:D
Edited by Stormrider on 24/05/2013 at 18h46.
Stormrider #3 24/05/2013 - 18h37

Class : Légende du Forum
Posts : 466
Registered on : 02/01/2013

Off line

Hi,
Most webcams have a ir-filter.Some have a weak filter and some have a strong filter.You have to remove the filter to make the leds more visible.Next question is, how do you remove the filter.Well that depents on whitch cam you have.

Greetz Stormrider
connla #4 24/05/2013 - 18h49

Class : Apprenti
Posts : 9
Registered on : 24/05/2013

Off line

ps3 eye which I was told by the seller on ebay that I wouldnt have to remove the ir-filter just place a piece of exposed film (which came with the order) over the lense
Stormrider #5 24/05/2013 - 18h52

Class : Légende du Forum
Posts : 466
Registered on : 02/01/2013

Off line

Hi,
did you reed this post?
http://forum.free-track.net/index.php?showtopic=3624
you also test the visibility of you leds with a photocamera or smartphone.
greetz Stormrider
Edited by Stormrider on 24/05/2013 at 18h55.
connla #6 24/05/2013 - 19h13

Class : Apprenti
Posts : 9
Registered on : 24/05/2013

Off line

ahah!

so i was thinking in the right direction, it was that the negative was too strong.

right then, need to find me some old fashioned 3d glasses...

f*ck.

where the hell am I to find them today :(

I have a tonne of the new ones but no old red/blue ones.
Steph #7 25/05/2013 - 12h09

Class : Moderator
Posts : 656
Registered on : 16/11/2007

Off line

You can try something like this this:

http://forum.free-track.net/index.php?showtopic=3372&message=17843
connla #8 25/05/2013 - 23h07

Class : Apprenti
Posts : 9
Registered on : 24/05/2013

Off line

i asked that very question on the other thread, if colouring in pieces of plastic was a proper substitute. Might give it a shot tonight.
connla #9 30/05/2013 - 21h04

Class : Apprenti
Posts : 9
Registered on : 24/05/2013

Off line

I give up.

This thing just refuses to work.

the camera picks up the leds. But I need to hold them inches from the camera.

I've tried floppy disk film, i've tried colouring in pieces of plastic red and blue

I've tried using old fashioned 3d glasses. Heck I experimented with the new 3d glasses.

The problem remains the same.

To pick up the leds where I am sitting while playing the threshold gets pushed far too low where it spazzes out picking up indicators everywhere.

i've tried 75fps, 60fps, 50fps. I've pushed the gain and the exposure and the colours everywhere.

Simply put this camera (ps3 eye) cannot pick the leds after a very short distance (picture attached)

And its not the leds. I bought this led set from Delan clip. There are numerous happy users of this set up all over youtube.
http://www.ebay.co.uk/itm/230974310505?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

I can use facetrack on facetracknoir but its fidgity I was hoping for something smoother. but no force can convince this damn thing to work.

Posted Image

The camera cannot pick up the leds from this distance. :(
connla #10 30/05/2013 - 21h37

Class : Apprenti
Posts : 9
Registered on : 24/05/2013

Off line

heh...2 minutes after posting that, I figured out what was wrong and fixed it...

Almost there now
Stormrider #11 31/05/2013 - 06h33

Class : Légende du Forum
Posts : 466
Registered on : 02/01/2013

Off line

Hi,
What  was your solution?It can be useful if you share it with us so it can help other people.
Greetz Stormrider
connla #12 31/05/2013 - 09h41

Class : Apprenti
Posts : 9
Registered on : 24/05/2013

Off line

It was how I was attaching the filter over the lense.

Instead of trying to attach the filters directly to the camera body (like in the above picture) I instead made a little hat out of the remaining pieces of the 3d glasses and attached it so it sat above the camera. It seems pushing the filter right up against the body caused focusing issues, but giving a small bit of space between filter and lense seemed to allow the camera to focus

 >  Fast reply

Message

FreeTrack Forum > FreeTrack : English Forum > Support : FreeTrack Software > camera having trouble picking up leds

 >  Stats

1 user(s) connected during the last 10 minutes (0 member(s) and 1 guest(s)).