the framerate is not limited by the rj45 extender but by the camera itself (in my case) and i think the bandwidth of the extender is wide enough to transfer 120 fps @ 640x480 and you often can reduce the scan area of industrial camera sensor to increase framerate for example a 640x480 sensor which outputs 90 fps can outputs 180 fps @ 320x240
++ a Le 3 avril 2012 11:34, Jack <[email protected]> a écrit : > Le 02/04/2012 09:48, Antoine Villeret a écrit : > > hi, > > i got 60 fps in 640x480 / grayscale which is the default image > configuration and the more bandwith expensive for this camera > > > ++ > a > > > > > > -- > do it yourself > http://antoine.villeret.free.fr > http://drii.ensad.fr > -- > Google lit ce mail... > si vous refusez cela, utilisez l'adresse antoine.villeret [at] free.frpour me > contacter > > > > Le 1 avril 2012 15:42, Jack <[email protected]> a écrit : > >> Le 01/04/2012 14:18, Antoine Villeret a écrit : >> >> hi jack, >> >> i'm using a firewire 400 over RJ45 extender (from AVT) on a tour with an >> AVT Guppy >> it's work fine with 50m cable, it should work at least until 100m but i >> never tried >> it's not possible to use switch to increase the distance with this kind >> of extender >> >> you can use certain switches with GigE but it increases latency i think >> >> another solution for very long distance (more than 100m) is the optical >> fiber >> you can find some firewire over optical fiber extender >> >> Basler made a technical report on industrial cameras interface here : >> http://www.i2s-vision.fr/upload/BAS1108_Interfaces.pdf >> >> hope this helps >> >> ++ >> a. >> -- >> do it yourself >> http://antoine.villeret.free.fr >> http://drii.ensad.fr >> -- >> Google lit ce mail... >> si vous refusez cela, utilisez l'adresse antoine.villeret [at] free.frpour >> me contacter >> >> >> >> Le 1 avril 2012 13:56, Jack <[email protected]> a écrit : >> >>> Le 01/04/2012 02:22, Max a écrit : >>> >>>> Am 01.04.2012 um 01:53 schrieb Jack: >>>> >>>>> PS : does anybody tried an other solution (like GigE or >>>>> USB<->Ethernet<->USB) with Gem when you need long distance between camera >>>>> and computer ? Is it very stable ? >>>>> >>>> I could offer vnc access to a os x or ubuntu machine hooked up to >>>> either a Allied Vision Tech GigE or Firewire 800 camera. >>>> >>>> m. >>>> >>> >>> Hello Max, >>> >>> Did you ever tried that solution ? >>> Is it appropriate to detect very small movement and is it enough fast to >>> be used in real time (not to much latency ?) ? >>> ++ >>> >>> Jack >>> >>> >>> >>> _______________________________________________ >>> GEM-dev mailing list >>> [email protected] >>> http://lists.puredata.info/listinfo/gem-dev >>> >> >> >> Hello Antoine, >> >> Thanx to share your configuration and the Basler technical report, it is >> a useful document. >> What is the resolution the framerate you get on your computer from your >> camera with that configuration ? >> ++ >> >> Jack >> >> >> > > OK. I would prefer a camera with 640x480 pixels at 120 fps minimum to be > more precise in the detection of very small movements. > ++ > > Jack > > >
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