FAQS

Hello! How can we help?

GeoNadir Account

Create and manage your GeoNadir account.

Drone Mapping

Are you a researcher, land and sea manager, environmentalist, or simply a data scientist?

Troubleshooting

It would be tech if it didn’t have gremlins every now and then.  Let’s help you fix them. 

GENERAL / GETTING STARTED

GeoNadir is all about working with drone operators and data scientists to capture and analyse nadir (looking directly down) photos of our most at-risk ecosystems. We provide a platform to host and share FAIR drone data (findable, accessible, interoperable, and reusable) for environmental good.

It all depends on what you are planning to do with the drone, and how much you have to spend! Check out this video to learn more about different types of drones.

For the purpose of collecting mapping data, you need a drone that will ‘talk’ to the mapping mission planning apps, and tag the photos you take with location information (e.g. latitude, longitude, altitude). DJI has a great range of options, but stay away from the Mavic Mini at the moment as it’s not compatible with mapping apps. If you’re in Australia, visit our Education Partner She Maps for a great deal on DJI products.

That is extremely simple, just click HERE and join our mission! We will keep you informed about our status every Wednesday.

Follow us on TwitterInstagram, and Facebook! We will post cool applications with drone data and you can interact with all the community members – we’d also love a share / retweet. And you are always welcome to contact us through our website and tell us what you think!

We absolutely recommend you start with your drone’s instruction manual! There’s always some really useful stuff in there. Make sure that you also check your local regulations so that you keep safe and are flying legally. You may also need to register your drone, do a course, or even get a license to fly it, so please take the time to find out the rules in your country.

Try to find someone in your local area who will help you out for the first flight as it can be really nerve wracking! You can also watch this video to learn how the controls work when you are up and flying.

If you would like to create your own orthomosaics, 3D models, and learn how to create a map within a Geographic Information System, check out this drone mapping course from our Education Partner, She Maps.

As long as it’s a place that drone can fly to (safely and legally!), we will be covering it! For now, we are have listed numerous terrestrial, aquatic, coastal, and marine ecosystems. It can be about coral reefs, agriculture, or urban areas. Join our mission, upload your data, and let us know what you think!

CAPTURING DATA

The best thing about mapping missions is that the drone and mapping apps do all the hard work! We use autonomous rather than manual flight (watch this video to learn the difference). So you’ll need to download a mapping mission planning app to help you – see the next question!

This will depend on the drone you are flying, and what you are using for the app platform (i.e. iOS, Android, or desktop). Then it often comes down to personal preference. We recommend checking out DroneDeploy (Android, iOS, desktop, DJI drones only), Pix4D Capture (Android, iOS, DJI plus other drones), or DJI GS Pro (iOS, DJI drones only. Don’t worry about paying – the free versions do the job!

Here’s some intro videos for each of those options to help get you started:

DroneDeploy Pix4D Capture | DJI GS Pro

There is NO restrictions on what drone you use. As long as it’s a drone that can take pictures with 80% sidelap and overlap (no matter using its own camera or an external camera attached below), and will geotag those images with latitude, longitude, altitude etc., GeoNadir will be happy for you to upload the images.

There’s a couple of factors in this one: 1. Make sure you know your legal maximum flying altitude (in Australia it’s 400ft / 120m); 2. Fly high enough to stay clear of obstacles (trees, powerlines etc.); 3. It depends on how much detail you need to see in your pictures

If you’d like to understand more about the relationship between flying height, level of image detail, and the amount of area you can cover check out this video.

If you’re just getting started mapping for GeoNadir, we recommend flying at 80m / 260ft – of course first checking your local rules and obstacles!

We like to keep things simple when you’re getting started – program for 80% overlap and 80% sidelap, just like we suggest 80m altitude. That way you only need to remember one number 🙂 As you get more experienced, if you’d like to understand more about the relationship between flying height, level of image detail, and the amount of area you can cover check out this video.

Please also choose the single grid rather than cross grid or perimeter

Absolutely! Check out Karen’s top three tips for drone mapping that you don’t get with your drone license training

UPLOADING DATA

It all depends on the size (i.e. MB) of each of the photos, how many you are trying to upload, and the speed of your internet. Things also go waaay faster if you make sure that you upload directly from your computer rather than from a server or other cloud storage. It takes us about four seconds per 20MB Phantom 4 Pro image uploading from the local drive. You can always continue working in another tab or window and just let it go in the background though. Or wander off for a cup of coffee or chocolate!

An image collection consists of the raw images captured by the drone and uploaded by each user, metadata of each image and basic information of the whole collection determined by the user (categories, tags, credits, etc). In the future, we will be adding more features to an image collection including an orthomosaic pictures generated by GeoNadir backend, DSM (digital surface model) and more. Join us and we will keep you updated. 

It’s very easy. Once you log into GeoNadir database, just click the “Upload” button on the left, follow the steps on the screen, type in the basic information and select the images you want to publish. Ta-dah! Your collection will be ready to go once finishing uploading.

Unfortunately, that is not possible. The reason for that is because we would like our users to use the data in our database to perform any analysis they want, therefore, we would like to keep the data consistent through out the time. That is to say, an image collection represents images are all taken at the same location in a single mission. However, if there is an upload error that you by accident didn’t manage to upload the whole collection at one time, please feel free to contact the team!

Unfortunately no. We only accept overlapping photographs at this time. The reason behind is that the drone images usually have higher resolution than frames in a video and allow us to generate orthomosaic maps with great details.

Nope! We do that all for you. We are aware that producing an orthomosaic map or DSM can be time-consuming and require high computational power. It can be expensive as well. So all you need to do is upload your nadir data with high overlap and sidelap and let us take care of the preprocessing for you. 

There are a few points that we would like to let you keep in mind before you start uploading. 

  1. Make sure all the images have sufficient overlap and all are geotagged.
  2. Make sure all the images are captured within a single mission at the same area of interest.
  3. Make sure all images are from nadir angle (i.e. you might need to delete the takeoff and landing images taking by the drone since they usually point forwards rather than downwards). Please also remove any landscape ‘happy snaps’ before you upload.
  4. Make sure the images are collected through a mapping plan with proper overlap and sidelap (we recommend using 80% as default, but if you’re experienced with drone mapping, you can also use the percentage that fits your purpose to generate an orthomosaic map).

You can get more information in the “Capturing data” section. 

You have to come up with a name for your image collection. We also recommend you choose any ecosystem categories that fit and can also type in up to 10 tags that you think shows some extinctive features in your collection. Also writing a short description of your collection would be highly appreciated. You could also give credits to your collaborators or drone pilot in case you didn’t capture the data all by yourself. 

Please don’t upload them, but check out the tips above about capturing better data or simply get in touch with us! We are more than happy to help you out.

We haven’t yet found an upper limit at this moment (let us know!). But please take into consideration your internet condition, computer battery, etc. If the dataset is huge, it will take some time to upload. You can leave the webpage in a tab or leave the computer on over night. Otherwise, we wish you a happy uploading!

DOWNLOADING DATA

Thanks for your enthusiasm! We are currently doing beta testing for GeoNadir and will go live with the platform very soon. If you click ‘Join GeoNadir’ on our homepage, we’ll let you know when we are ready for share data.

Go to the collection and click the “Raw Image” tab on top. Right click, select the “save image as” and save it to the directory you want.

 

Please remember to give credit to those who captured the data and to GeoNadir for helping to make it available. You can do this in the acknowledgements section of a journal article or in any other place where you wish to present the data and your findings.

Unfortunately at the moment you can only download one image at a time. We are working on it. Stay tuned!

Thanks for asking! Acknowledging the work of others is super important to us. Every image collection has metadata associated with who captured the data, and others they wish to credit for assisting with data capture. Please mention the person who captured the data, as well as GeoNadir for helping to make it available in the acknowledgements section of a journal article, and in any other location where you use the data or present your findings.

Of course shoutouts on social media are always welcome too! #GeoNadir

TROUBLESHOOTING

Select the “forget password” option at the bottom of “sign in” floating window and type in your registered email. You will receive an email and follow the instructions to reset your password.

Please double check to see all the images are geotagged and were collected at the same location during one mapping mission. Any invalid images will show a warning next to the image name in the upload window.

Soon you will be able to do this. Our web developers are working very hard at the moment. Stay tuned!

On top of our homepage, you can filter the database based on categories, or just type in the locations or keywords to see if there are any tags that suit your interests.

Just get in touch with us on our social media (TwitterInstagram and Facebook) or contact us through our website. We are more than happy to get feedback from you!

Troubleshooting Tutorials

Drone Mapping with Pix4D Capture

Drone Mapping with DJI GS Pro

Drone Mapping with Drone Deploy