[Elphel-support] image Save In trigger mode?

[Andreas Bean]

Hello Andrey!

This is important for my application too. I'm using the cam in triggered
mode and want to record 20fps. For that purpose I'm setting the trigger
period to 4800000. Is that correct? With autoexposure turned on I have
to limit the max exposure time to 50ms minus read-out time. I guess the
read-out time depends on the resolution. In my case I have a resolution
of 1296x960. How can I determine the read-out time and limit the
exposure time? I have seen an input box with 500ms in it, but I can't
change its value.

Thanks,
Andreas

Andrey Filippov schrieb:
> Kaien,
>
> yes, sure you can change exposure in trigger mode too. You just need to
> remember that minimal frame period includes exposure time (but in most
> applications that time is much shorter than frame readout).
>
> Depending on the frame  rate the autoexposure and white balance may be
> unstable in triggered mode. For most applications where the light source is
> known (i.e. outdoors) I would recommend calibrating the color gains, and use
> them fixed with auto white balance disabled. For autoexposure (if you need
> it) you may want to tweak parameters that define it's operation. You can
> those settings in camera GUI (camvc).
>
> Andrey
>
> On Wed, Dec 9, 2009 at 4:03 AM, Kaien Ban <kalvastro at naver.com> wrote:
>
>   
>> 1. Can I do change to exposure in trigger mode?
>>
>> 2. i transmit tirgger signal Continuous.
>> Whenever you change the frame, I saved all the frames.
>> Images were not all perfect.
>>
>> enable Auto WB
>> http://cfile9.uf.tistory.com/image/1411AD0E4B1F77CE5E6798
>> http://cfile6.uf.tistory.com/image/1958A00C4B1F78292B578A
>>
>> disable Auto WB
>> http://cfile26.uf.tistory.com/image/1511AD0E4B1F77CE5FFE58
>>
>> Delay times do I need?
>>
>>
>>
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>>
>>
>>     
>
>   
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