Comments on: Tracking markers delivered http://www.brokenpipefilms.com/unframedvfx/2005/04/tracking-markers-delivered/ An insider's look at the world of low-budget visual effects. Tue, 06 Jan 2009 23:23:37 +0000 http://wordpress.org/?v=2.0.4 by: Hugh Macdonald http://www.brokenpipefilms.com/unframedvfx/2005/04/tracking-markers-delivered/#comment-88 Mon, 09 May 2005 14:42:10 +0000 http://www.brokenpipefilms.com/unframedvfx/2005/04/tracking-markers-delivered/#comment-88 Or you can just get in touch with him yourself^ ;) Didn't know you actually checked this place out, Rob! Good to see you on here. Your e-mail address hasn't come through to be publicly visible on here, but I assume people could get in touch with you via your website...? Or you can just get in touch with him yourself^ ;)

Didn’t know you actually checked this place out, Rob! Good to see you on here.

Your e-mail address hasn’t come through to be publicly visible on here, but I assume people could get in touch with you via your website…?

]]> by: rhyuso http://www.brokenpipefilms.com/unframedvfx/2005/04/tracking-markers-delivered/#comment-87 Mon, 09 May 2005 14:37:12 +0000 http://www.brokenpipefilms.com/unframedvfx/2005/04/tracking-markers-delivered/#comment-87 There is a resistor in there. It is (from memory) a 100 ohm resistor. The LED's are 5000mcd - bright enough to be used in daylight. The whole item - including batteries and labour costs about £2.35 each. Obviously you would probably be able to make them for less, you can pick up most of the components from Maplin or RS or farnell. If you are interested drop me a line. I can also supply the components seperately if anyone is interested. There is a resistor in there. It is (from memory) a 100 ohm resistor.
The LED’s are 5000mcd - bright enough to be used in daylight.
The whole item - including batteries and labour costs about £2.35 each.
Obviously you would probably be able to make them for less, you can pick up most of the components from Maplin or RS or farnell.
If you are interested drop me a line. I can also supply the components seperately if anyone is interested.

]]> by: Žiga http://www.brokenpipefilms.com/unframedvfx/2005/04/tracking-markers-delivered/#comment-86 Sun, 08 May 2005 11:25:51 +0000 http://www.brokenpipefilms.com/unframedvfx/2005/04/tracking-markers-delivered/#comment-86 dak, you need to track more points to get info for the rotation and scale... a single point is enough for tracking 2d position... for matchmoving a lot more points are required...at least three (or four maybe - as in a cube)... So...with 1 tracker you can have 2d motion (x,y axis), with 2 you get 2d motion, rotation and maybe size (still in 2d)...then with more than 3 you can go for 3d matchmoving..but it's important on how they are placed... I haven't done much matchmobing so this came off the top of my head, so if I wrong, somebody please correct me ^_^ dak, you need to track more points to get info for the rotation and scale… a single point is enough for tracking 2d position… for matchmoving a lot more points are required…at least three (or four maybe - as in a cube)… So…with 1 tracker you can have 2d motion (x,y axis), with 2 you get 2d motion, rotation and maybe size (still in 2d)…then with more than 3 you can go for 3d matchmoving..but it’s important on how they are placed…

I haven’t done much matchmobing so this came off the top of my head, so if I wrong, somebody please correct me ^_^

]]> by: dak http://www.brokenpipefilms.com/unframedvfx/2005/04/tracking-markers-delivered/#comment-85 Fri, 06 May 2005 16:12:05 +0000 http://www.brokenpipefilms.com/unframedvfx/2005/04/tracking-markers-delivered/#comment-85 I heard that about them, surely there must be a way to filter the LEDs so they dont flare. good luck with the gel. Im pretty new to matchmoving but I was under the impression that the tracker takes into account changes in scale and rotation as well as position. how can you get that information from tracking a point ? its nice to have a friend with a soldering iron. I am also in a low budget world right now so I couldnt really compensate your friend for his work. I would take a stab at it myself tho, looks pretty straight forward. are the LEDs wired directly to the batteries? or is there a resistor there somewhere to prevent burnouts ? I heard that about them, surely there must be a way to filter the LEDs so they dont flare. good luck with the gel.
Im pretty new to matchmoving but I was under the impression that the tracker takes into account changes in scale and rotation as well as position. how can you get that information from tracking a point ?
its nice to have a friend with a soldering iron.
I am also in a low budget world right now so I couldnt really compensate your friend for his work. I would take a stab at it myself tho, looks pretty straight forward. are the LEDs wired directly to the batteries? or is there a resistor there somewhere to prevent burnouts ?

]]> by: Hugh Macdonald http://www.brokenpipefilms.com/unframedvfx/2005/04/tracking-markers-delivered/#comment-84 Fri, 06 May 2005 15:54:09 +0000 http://www.brokenpipefilms.com/unframedvfx/2005/04/tracking-markers-delivered/#comment-84 They are normal red LED markers for matchmoving. They give a bit more of a flare than I'd have liked (I might try putting some kind of ND gel on them to dim them down a bit), but they do work pretty well. A friend of mine who's an electronic engineer made them for me. If anyone's interested, I could ask if he'd be willing to do more for other people.... They are normal red LED markers for matchmoving. They give a bit more of a flare than I’d have liked (I might try putting some kind of ND gel on them to dim them down a bit), but they do work pretty well.

A friend of mine who’s an electronic engineer made them for me. If anyone’s interested, I could ask if he’d be willing to do more for other people….

]]> by: dak http://www.brokenpipefilms.com/unframedvfx/2005/04/tracking-markers-delivered/#comment-83 Fri, 06 May 2005 15:46:49 +0000 http://www.brokenpipefilms.com/unframedvfx/2005/04/tracking-markers-delivered/#comment-83 Im curious about your trackers, are they IR trackers for mocap ? or are you going to use them for matchmoving ? i have heard mixed reviews on that. where did you get them ? thnx Im curious about your trackers, are they IR trackers for mocap ? or are you going to use them for matchmoving ? i have heard mixed reviews on that.
where did you get them ?

thnx

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