Re: [Paparazzi-devel] Exif latitude error

[Stephen L Hulme]

Hi Christophe,

 

First, thank you very much, it worked, apart from a small compile issue with the new exif_alt code.

 

Reverting to the original IMAV2015 alt_code and the latest location revisions, 

 

Ubuntu produced this: http://www.omo.co.nz/Exif_ubuntu_2015-11-05.png

 

and Windows this:  http://www.omo.co.nz/Exif_properties_5-11-15.png

 

Regards

 

Stephen   

 

 

On Thursday, November 05, 2015 2:20 AM, Christophe De Wagter <address@hidden> wrote:

 

Apparently they are not allowed to be negative, but a separate REF tag is needed for north/south east/west. There is very little documentation so here is my attempt:

 

https://github.com/paparazzi/paparazzi/pull/1399

 

Christophe

From: Christophe De Wagter

Sent: Thursday, November 05, 2015 2:20 AM

To: Paparazzi UAV devel list

Subject: Re: [Paparazzi-devel] Exif latitude error

 

Apparently they are not allowed to be negative, but a separate REF tag is needed for north/south east/west. There is very little documentation so here is my attempt:

 

https://github.com/paparazzi/paparazzi/pull/1399

 

 

 

-Christophe

 

On Mon, Nov 2, 2015 at 9:16 PM, Stephen L Hulme <address@hidden> wrote:

Hi Christophe

 

I must make a correction . I have not tried ExifSRational and int32_t simultaneously.

 

I will certainly try this combination along with your changes when possible.

 

Regards

 

Stephen  

 

From: Stephen L Hulme

Sent: Tuesday, November 03, 2015 8:33 AM

To: Paparazzi UAV devel list

Subject: Re: [Paparazzi-devel] Exif latitude error

 

 

Hi Christophe,

 

I have tried int versus uinit and SRational for lat. with no change. 

 

Nonetheless, I appreciate your effort, but I think Felix maybe right about exif not being able to resolve negative values.

 

I am prepared to try any changes, but it is difficult at this time of year with wind - http://www.metservice.com/marine-surf/recreational-marine/wellington 

 

I will update my repo and test as soon as possible.

 

Regards

 

Stephen

 

On November 03, 2015 6:37 AM, Christophe De Wagter <address@hidden> wrote:

 

Trying to solve the issue for everyone here:

https://github.com/paparazzi/paparazzi/pull/1399

 

From: Christophe De Wagter

Sent: Tuesday, November 03, 2015 6:37 AM

To: paparazzi-devel

Subject: Re: [Paparazzi-devel] Exif latitude error

 

Trying to solve the issue for everyone here:

https://github.com/paparazzi/paparazzi/pull/1399

On Oct 26, 2015 8:47 PM, "Stephen L Hulme" <address@hidden> wrote:

Hi Christophe,

 

Thank you for the prompt and possibly definitive reply. I will trial the change a soon as the weather permits.

 

In respect of the EXIF module and the IMAV 2015 flight plan procedure, the pleasure has been all mine. Enac’s IMAV 2014 flight plan and now TU Delft’s offer great insight into the extensive possibilities of Paparazzi NAV mode flight. I thank all concerned, even Parrot for the platform.

 

Regards

 

Stephen

 

 

From: Christophe De Wagter

Sent: Monday, October 26, 2015 11:54 PM

To: Paparazzi UAV devel list

Subject: Re: [Paparazzi-devel] Exif latitude error

On Monday, October 26.2015 11:54 PM, Christophe De Wagter <address@hidden> wrote:

 

Hi Stephen,

 

Thank you for using the module. Sorry about the issue of neglecting the southern hemisphere.

 

I'm pretty sure the problem is the uint32_t type of attitude which obviously should get a sign: https://github.com/paparazzi/paparazzi/blob/master/sw/airborne/modules/computer_vision/lib/exif/exif_module.c#L30

 

 

-Christophe

 

On Sat, Oct 24, 2015 at 6:35 PM, Stephen L Hulme <address@hidden> wrote:

Hi Christophe De Wagter

 

I posted the following question on paparazzi/discuss – Gitter (20/10/15) and failed to get a reply.

 

“Any ideas why the video_exif.xml module maybe outputting unintelligible GPS latitude reports in a southern hemisphere roaring forties location? View jpeg properties example”

 

Could you please offer some hint how to rectify this error.

 

Regards

 

Stephen Hulme

 

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