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

[Cole]

wow that was not clear at all.  I'll post a demo to youtube when I am
finished later tonight.

On Mon, Mar 16, 2015 at 10:54 PM, Cole <colek42 at gmail.com> wrote:

> 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
>> >
>> >
>>
>>
>
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