[OpenDroneMap-dev] OpenDroneMap-dev Digest, Vol 2, Issue 3

[Cole]

I have to write it anyways as it is for a project that I am working on.  My
code will retain all of the data in the frame, but the areas that are
corrected will be in the alpha layer.  For my application I am not using
any EXIF data, rather I am using sensor messages from ROS.  I'll
incorporate your EXIF method into my code.  Of note, there is an EXIF spec
for multi-pictures.  http://www.cipa.jp/std/documents/e/DC-X007-KEY_E.pdf.

On Mon, Mar 16, 2015 at 10:16 PM, Alex Mandel <tech_dev at wildintellect.com>
wrote:

> Before you write too much code I found this last week.
> http://www.theeminentcodfish.com/gopro-calibration/
>
> That author has the checkerboard code already, we just need to contact
> about license. Well and a minor rewrite to skip the video part since we
> want to work with still images.
>
> Once you have the correction factors then you can run it through the
> scripts I already have. On that note, I made some big updates to my
> https://github.com/wildintellect/lenscorrection code last week. It now
> saves Exif data which is needed by the other tools. Note the conversion
> from and OpenCV image to PIL type image in order to also save exif
> (which also requires swapping channels).
>
> With both of these we need to make sure we output an estimate of the
> post corrected sensor size. For the GoPro HD2 with my correction code
> you lose about 25% of the width and end up with a 5mm sensor. I'm
> running a test with photos from this correction and still waiting for
> results (1000 pics takes a while).
>
> Thanks,
> Alex
>
>
>
>
> On 03/16/2015 04:33 PM, Cole wrote:
>
> >
> > I am working on the lens correction code tonight.  I have a pull request
> > for a script that will have you input a checkerboard image, and a dir
> with
> > all the images or video you would like processed.  It will depend on
> python
> > 2.74 and OpenCV.
> >
> > I wish I could give the project some more time, but I am currently
> working
> > full time, taking way too many credits, and a family I like to spend some
> > time with.  My schedule should clear up in a couple months and I should
> be
> > able to make some progress on some of this stuff
> >
> > v/r
> > NJK
> >
> >
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/opendronemap-dev/attachments/20150316/cbc9efa7/attachment.html>