OpenDroneMap-docs/source/flying.rst

Flying Tips
===========

Data collection effort, full 3D
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

For best in class results with full 3D reconstruction, we recommend the following:

* 60% overlap nadir flight
* 70-80% overlap 45-degree gimbal angle cross-grid

The 45-degree cross-grid flight provides the basis for a fully tied together model, while the nadir flights provide the necessary texture for orthophoto texturing. The lower overlap  meets the minimum requirement for orthophoto products as facilitated by by feature matching from the much higher overlap cross-grid.

Data collection effort, 2D and 2.5D products
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

For best in class results 2D and 2.5D products, we recommend the following:

* 70-80% overlap slightly off-nadir (5-10 degree off nadir)

For more complex buildings and vegetation, aim for closer to 80-83% overlap. If buildings, vegetation, and terrain changes are not complex, it's quite feasible to use closer to 70% overlap.

(credit: derived from ongoing conversations with Ivan Gayton, Humanitarian OpenStreetMap Team)

Other resources on flying
^^^^^^^^^^^^^^^^^^^^^^^^^

The `Humanitarian OpenStreetMap team <https://www.hotosm.org/>`_ has guidelines on `flying for UAV mapping <https://uav-guidelines.openaerialmap.org/>`_:

- `Choosing the right UAV <https://uav-guidelines.openaerialmap.org/pages/05-choosing-the-right-uav/>`_ 

- `Choosing the right sensor <https://uav-guidelines.openaerialmap.org/pages/06-choosing-the-sensor/>`_ 

- `Mission preparation <https://uav-guidelines.openaerialmap.org/pages/07-preparing-for-the-uav-mission/>`_

The guidelines are intended for drone mapping projects on islands, but have general use for all drone mappers.

See also DroneDeploy's guide on `Making Successful Maps <https://support.dronedeploy.com/docs/making-successful-maps>`_, which provides great tips on mission planning.

Finally, lens distortion is a challenge in projects requiring accurate 3D data. See our section in these docs on `Camera Calibration </tutorials/#calibrating-the-camera>`_.

`Learn to edit <https://github.com/opendronemap/docs#how-to-make-your-first-contribution>`_ and help improve `this page <https://github.com/OpenDroneMap/docs/blob/publish/source/flying.rst>`_!
Adding nav item and page about requesting features. 2020-05-24 20:15:39 +00:00			`Flying Tips`
basic doc structure in sphinx 2018-03-11 16:49:17 +00:00			`===========`

better flying recommendations 2024-08-25 21:46:13 +00:00			`Data collection effort, full 3D`
			`^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^`

			`For best in class results with full 3D reconstruction, we recommend the following:`

			`* 60% overlap nadir flight`
			`* 70-80% overlap 45-degree gimbal angle cross-grid`

			`The 45-degree cross-grid flight provides the basis for a fully tied together model, while the nadir flights provide the necessary texture for orthophoto texturing. The lower overlap meets the minimum requirement for orthophoto products as facilitated by by feature matching from the much higher overlap cross-grid.`

			`Data collection effort, 2D and 2.5D products`
			`^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^`

hotfix rm 5cm 2024-08-25 21:52:29 +00:00			`For best in class results 2D and 2.5D products, we recommend the following:`
better flying recommendations 2024-08-25 21:46:13 +00:00
			`* 70-80% overlap slightly off-nadir (5-10 degree off nadir)`

			`For more complex buildings and vegetation, aim for closer to 80-83% overlap. If buildings, vegetation, and terrain changes are not complex, it's quite feasible to use closer to 70% overlap.`

			`(credit: derived from ongoing conversations with Ivan Gayton, Humanitarian OpenStreetMap Team)`

remove spare colon 2024-08-25 21:55:15 +00:00			`Other resources on flying`
			`^^^^^^^^^^^^^^^^^^^^^^^^^`
better flying recommendations 2024-08-25 21:46:13 +00:00
tweaks 2019-09-12 02:42:43 +00:00			The `Humanitarian OpenStreetMap team <https://www.hotosm.org/>`_ has guidelines on `flying for UAV mapping <https://uav-guidelines.openaerialmap.org/>`_:
add flying sections 2019-09-11 21:36:20 +00:00
minor tweaks and reorg/figures for Output section 2019-09-12 01:56:23 +00:00			- `Choosing the right UAV <https://uav-guidelines.openaerialmap.org/pages/05-choosing-the-right-uav/>`_
add flying sections 2019-09-11 21:36:20 +00:00
capitalization 2019-09-12 01:09:50 +00:00			- `Choosing the right sensor <https://uav-guidelines.openaerialmap.org/pages/06-choosing-the-sensor/>`_
add flying sections 2019-09-11 21:36:20 +00:00
capitalization 2019-09-12 01:09:50 +00:00			- `Mission preparation <https://uav-guidelines.openaerialmap.org/pages/07-preparing-for-the-uav-mission/>`_
add flying sections 2019-09-11 21:36:20 +00:00
tweaks 2019-09-12 02:42:43 +00:00			`The guidelines are intended for drone mapping projects on islands, but have general use for all drone mappers.`
minor tweaks and reorg/figures for Output section 2019-09-12 01:56:23 +00:00
			See also DroneDeploy's guide on `Making Successful Maps <https://support.dronedeploy.com/docs/making-successful-maps>`_, which provides great tips on mission planning.

fix camera calib link 2021-10-06 14:58:01 +00:00			Finally, lens distortion is a challenge in projects requiring accurate 3D data. See our section in these docs on `Camera Calibration </tutorials/#calibrating-the-camera>`_.
add link to docs edits in each page 2019-09-14 18:41:59 +00:00
modify links to edit (#86) 2020-12-03 15:55:12 +00:00			`Learn to edit <https://github.com/opendronemap/docs#how-to-make-your-first-contribution>`_ and help improve `this page <https://github.com/OpenDroneMap/docs/blob/publish/source/flying.rst>`_!