[gst-devel] three cameras merged to one display

[Matteo Landi]

On Mon, Aug 16, 2010 at 2:20 PM, Andrey Nechypurenko
<andreynech at googlemail.com> wrote:
> Hi,
>
>> Thanks much.  Videomixer looks very useful.  I can't believe I didn't see it
>> before.
>
> You can also take a look at this:
> http://wiki.oz9aec.net/index.php/Gstreamer_Cheat_Sheet#Video_Wall:_Live_from_Pluto
> As I understand it is very close to what you are trying to achieve.

Very nice example!

>
> Regards,
> Andrey.
>
>>
>> Next question:
>>
>> Is there a plugin to do general image warping using a coordinate map lookup
>> table?
>>
>> Thanks,
>> Bert Douglas
>>
>> On Sun, Aug 15, 2010 at 9:11 PM, Martin Bisson <martin.bisson at gmail.com>
>> wrote:
>>>
>>> Look into the source of the videomixer plugin.  It takes multiple video
>>> streams and merges them into one.  It should be a good starting point.
>>>
>>> Martin
>>>
>>>
>>> Bert Douglas wrote:
>>> > Hi All,
>>> >
>>> > I am new to gstreamer, but not new to image processing.
>>> > I seek advice on the best way to merge video streams in gstreamer.
>>> >
>>> > At least I am hoping for some indication that my goal is not doomed to
>>> > failure.
>>> >
>>> > There are three cameras, with wide angle lenses, on a post, covering
>>> > entire 360 degree field of view.
>>> > The goal is to combine video from three cameras, transform and project
>>> > it so that it shows in a single window as a unified picture.
>>> >
>>> > The question is not how to do the image processing.  I can manage
>>> > that.  The question is how best to work with gstreamer.
>>> >
>>> > The first obvious way (at least to me) is to write a new plugin that
>>> > has three sink-pads and one source-pad.
>>> > But I can't find any examples to follow.  And the docs on base
>>> > transform indicate that it can't handle this situation.
>>> >
>>> > You experts probably know another way to do this.
>>> > Maybe there is already a plugin that can help with this, but I just
>>> > don't have enough imagination to see it.
>>> >
>>> > Is it possible to connect multiple source-pads to a single sink-pad?
>>> >
>>> > Thanks much for your patience with a newcomer.
>>> >
>>> > --Bert Douglas
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>>> >
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-- 
Matteo Landi
http://www.matteolandi.net/