[GEM-dev] USB 3.0 camera and Gem

[Antoine Villeret]

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 <jack at rybn.org> 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
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> http://drii.ensad.fr
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> Google lit ce mail...
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>
>
>
> Le 1 avril 2012 15:42, Jack <jack at rybn.org> 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 <jack at rybn.org> 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
>>> GEM-dev at iem.at
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>>>
>>
>>
>>  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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