Developer Comment by Michael Oborne on November 1, 2011 at 5:20pm

I will be adding this screen to the next planner version (might be a bit away). its all working and should provide some numbers to use in the "grid" option of the planner.

Developer Comment by Michael Oborne on November 1, 2011 at 5:21pm

Tom, do you plan on offering and offline version?

Moderator Comment by Gary Mortimer on November 1, 2011 at 5:48pm

Top question, Michael, it won't well for me when I am in Africa!

Comment by James masterman on November 1, 2011 at 6:43pm

@Nick - I will try to make it to a PerthUAV meeting. Good to see there are quite a few others doing this locally.

@Micheal - Nice work on the camera dialog. How will you choose the coverage area on screen?

@Tom, thanks for the feedback on your service. As far as aerial mapping goes, you would probably need to add a few things to make it really useful for that kind of work. There are high-end, expensive services like Pix4D already in this space, but there is always room for more.

 

You would need to add things like an estimation of accuracy, orthorectification and use of control points to scale the image to real world coordinates. You would also need to scale up to deal with several hundred images at once. If you can get all of that to work you could probably charge in the order of a few thousand dollars for an aerial survey result.

 

There is also emerging demand for data fusion, combining results of photogrammetry with LIDAR scans and other data sources to improve accuracy.

 

A typical mining company here in Western Australia would routinely (quarterly) get aerial flyovers of their mines by a full sized Cessna. The accuracy for this kind of work needs to be ~5-10cm so a combination of LIDAR, photos and control points is used. A lot of this data is used for estimating stockpile volumes, mining limits and the like so needs to be accurate.

 

I know nothing about 3D printing, so that may be a better choice that doesn't require such complexity.

 

I hope you do well.

Comment by Gustav Kuhn on November 2, 2011 at 2:00am

I have to concur on the airframe, flying the same here :-)

James, pry off the cowl, remove the weights stuck therein, and you can use a bigger battery !

Comment by Chivar Maximillan Pilones on November 2, 2011 at 2:02am

simply great! if its only possible if this could be included as an out of the box function with the gcs/planner :) ]

 

 

Developer Comment by Michael Oborne on November 2, 2011 at 2:52am

have you guys used the grid funtion in the planner? this is what its there for.

in flight planner
right click goto grid > add polygon point

repeat above untill you have your surround, allow extra.

next click grid

specify your flying alt.

specify the distance between lines , eg in picture above i would use 172 which has 30 % side overlap

 

the next part is to fire the camera at 73m intervals, or via time delay... etc etc.

i know personaly i use the relay on a constant 4 second timer.

Comment by James masterman on November 2, 2011 at 3:31am

Thanks Michael, the grid function appears to do nearly everything I need for setting up waypoints for aerial photography runs. The only addition needed is to calculate grid spacing based on camera parameters.

@Gustav - thanks for the tip, I didn't realise there were weights in the nose. The cowl is not easy to remove so it's hard to tell what is in there!

Comment by Gustav Kuhn on November 2, 2011 at 5:42am

The cowl is not easy to remove so it's hard to tell what is in there

Tell me....

I bent the motor mount, after my plane flew into a hill on auto, you need to cut the nose sticker, then gently pry away one side first.

Afterwards, just stick some pvc tape over the joint.

( Didn't visually track the plane during the incident, so I used the log file to find the last point of data, then drove around the area 'till I picked up the xbee signal again, got a google earth picture of it's exact position :-))

 

Moderator Comment by Gary Mortimer on November 2, 2011 at 5:56am

@Mike that made me download the GCS right away and consider joining the Ardu clan! I will watch out.

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