[maemo-users] gst-launch and openmax

From: Aldon Hynes Aldon.Hynes at Orient-Lodge.com
Date: Sun Jan 31 16:08:25 EET 2010

   Thanks for the reply.  I did eventually find dspjpegenc, as well as some other options that have worked especially well, particularly a little bit of code that handles the exposure issue that I described.  Taking all of this, I've written a blog post about HDR photography on the N900

High Dynamic Range (HDR) Imaging on the #n900 Using Gstreamer and Enfuse

It ended up a little more geeky than I would have liked, but I continue to make refinements to my HDR processing, and I do think that the pieces are almost all in place for an HDR application is people are interested.


-----Original Message-----
From: Felipe Contreras [mailto:felipe.contreras at gmail.com]
Sent: Sunday, January 31, 2010 8:45 AM
To: Aldon Hynes
Cc: maemo users
Subject: Re: gst-launch and openmax

On Tue, Jan 26, 2010 at 11:26 PM, Aldon Hynes
<Aldon.Hynes at orient-lodge.com> wrote:
> So, I've been reading about a lot of fun things that I could do with my
> N900, if I can just figure out how...
> In particular, I'm interested in exploring what I could do with the camera.
> For example, I would love to set up a script to create high dynamic range
> (HDR) photographs.  It seems like the best way to do this is to write a
> script that would take three pictures in a row, with exposer setting of +2,
> 0 and -2.  It seems like gstreamer might give me that ability.  So, I've
> started looking at it.  However the examples for taking pictures via
> gstreamer talk about using omx_jpegenc, the OpenMax jpeg encoder.  However,
> I don't have that installed on my N900 and I can't figure out how to get it
> installed.  Is anyone using this that could give me some hints?
> Beyond that, the idea of Kite Aerial Photography, which also uses gstreamer
> and omx_jpegenc looks especially interesting.  Anyone tried anything like
> that, or have other interesting photography ideas?

omx_jpegenc was dropped in favor of dspjpegenc.

Felipe Contreras

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