[robocup-small] Fwd: problems with SSL Vision :/

[Bernhard Perun]

Thank you very much for your help to Angelo, Michael and Tim!

Here is the solution we choose:
* 2 very cheap firewire cards (18 Euros)
* Raw8/RGB/de-bayer-checkbox=true/shutter=700
=> 56 fps :)

Cheers,
Bernhard


On Thu, Apr 7, 2011 at 10:12 AM, Bernhard Perun <
bernhard.perun at googlemail.com> wrote:

> Hey Angelo,
>
> thanks for your fast reply.
>
> I think, we "just" have to make sure that our 2 cams are not running on the
> same bus.
>
> But how can we do that? By using 2 firewire cards?
>
> Cheers,
> Bernhard
>
>
>
> On Wed, Apr 6, 2011 at 7:51 PM, Angelo Gurzoni Jr <jgurzoni at yahoo.com.br>wrote:
>
>> Bernhard, hello
>>
>> I believe most teams use Ubuntu (we’re using version 10.10). Try to set
>> your camera to RAW8 mode, and make sure the 2 cameras are not on the same
>> bus
>>
>>
>>
>> Also, from your camera’s datasheet, it seems you can only get 53 fps even
>> in RAW8:
>>
>> Marlin F046 datasheet:  Frame rates:  Up to 53 Hz in Format_7; up to 53 Hz
>> in Format_7 Raw8; 36 Hz(YUV 4:2:2); 49 Hz (YUV 4:1:1); 21 Hz (RGB8)
>>
>>
>>
>> An approximate math on the bandwidth required is camera’s h_resolution X
>> v_resolution X bits_per_packet X fps
>>
>> bits_per_packet for RAW8 = 8 bits and for YUV422 = 16 (or was it some
>> variable number….? But larger than 8 for sure)
>>
>>
>>
>> ** I believe you also need to increase your result by +/- 20% to account
>> for the headers and comm. Control.
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> Cheers
>>
>> Angelo
>>
>>
>>
>> *From:* robocup-small-bounces at cc.gatech.edu [mailto:
>> robocup-small-bounces at cc.gatech.edu] *On Behalf Of *Bernhard Perun
>> *Sent:* Wednesday, April 06, 2011 11:32 AM
>> *To:* robocup-small at cc.gatech.edu
>> *Subject:* [robocup-small] problems with SSL Vision :/
>>
>>
>>
>> Hey guys,
>>
>> at the moment we want to configure our two AVT Marlin F046C cams in SSL
>> Vision, so that we can use them with the highest framerate possible.
>>
>> Unfortunatelly we're experiencing a lot of problems letting SSL Vision run
>> with these two cams.
>>
>> Our settings:
>> - OS: Debian 6.0
>> - SSL-Vision mode: YUV422
>> - One Delock Express Card - 34 Firewire card (notebook) / One WinTech
>> Controller Card (VIA 6306 Chipset) (desktop pc)
>>
>> The SSL-Vision errors we've got:
>> 1. The unpatched version of SSL Vision is running with one cam only (max
>> 25 frames). If we want to start the second one, we will get the error: Could
>> not allocate ISO channel (should be a known issue)
>> 2. With a patched version (divide the bandwidth by two) of SSL Vision our
>> two cams are working with only max. 18 frames each.
>>
>> Do you have any experience with these kind of problems or can you answer
>> these questions, please:
>>
>> - What kind of Linux/libdc1394 do you use?
>> - Which SSL-Vision settings (Raw8, YUV422, ...) do you use?
>> - What kind of firewire card do you use and how many cams per card (one or
>> two)?
>> - Do you have any clues to get SSL Vision running successfully?
>>
>> Thank you very much for your help!
>>
>> Regards,
>>
>> *Bernhard Perun*
>> Project leader "Tigers Mannheim"
>> Cooperative State University Baden-Wuerttemberg
>> Coblitzallee 1-9
>> 68163 Mannheim
>> E-Mail: bernhard.perun at googlemail.com
>> Internet: www.tigers-mannheim.de
>>
>
>
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