Riding Electric Unicycles at Play Day with UniRiders and EUC Denmark. This vlog is from an event at Brøndby beach park, where we showcased Electric Unicycles. The idea was a lot of activities where possible at the same day for the kids to try out. In this way, they could be inspired to pick up interests in their spare time when they are off from school. We had as always a very nice day, with a lot of talking about our favorite mean of transportation the Electric Unicycle.
EUC Denmark is a local community of riders meeting to share the mutual passion for Electric Unicycles. Uniriders.com is our webshop where you can buy your own wheel if you want.
Welcome back to Part 2 of 3D Mapping with Pix4D. The last episode ended with a successful mission but the water tower we tried to capture was out of frame in the preview. Let dive back in and see how I fixed it.
Before we do that I want to remind you that we are uploading drone and ewheel related material to help you get the best out of your equipment. So if you are new to this channel consider subscribing so you do not miss out on anything.
Now let’s look at the options. The capture angle is not vertical as needed to fix the framing, but horizontally. Increasing the capture angle will only space the captured photos further apart. I would recommend to keep it low. This leaves only one option to fix an object out of the frame and that is the height.
Once uploaded you get an email from PIX4d with estimated processing time for your model, this takes around 40min. Once the model is ready, you get another email with detailed pdf report about of your model.
Them email also contains a link to the model so you can preview it in a browser. Super smooth process, nice job Pix4D
Let see how the model compares to tower by comparing it to the drone footage from the Mavic Pro
As you can see the model is far from perfect, and it will require some more practice to get it right. When flying high above your object, areas that are not visible to the camera will not be part of the model. With that said it’s pretty amazing you can do a 3D model like this from 2D images.
It’s possible to export your project and import in Pix4D Desktop version but that is only for windows. From the desktop, you have access to additional tools to improve the model and event get a height map. I like the cloud service as makes it super easy to get started as the picture are downloaded from the drone automatically and you can push them to the cloud directly from the phone.
Now you are ready to go an experiment with 3D mapping, it’s easy and fun to get started. But sure you know your options if you experience a flyaway like I did and use the information provided in this video at your own risk.
Finally, I want to mention I studied the data from the first mission when I discovered the pictures in the app preview was cropped. You can just click the image, and see in full size. Obvious when you think about it. It turned out the images was actually ok with the tower in the frame. I do recommend to look at the pictures recorded live by pressing the camera icon during the mission, this will give you a clear view of something is wrong.
Hope you enjoyed this 3D mapping tutorial useful, if so then smash that like button below. If you are new to this channel hit the subscribe button on the logo next to me so you don’t miss out on the important stuff. I hope you will have a lot of fun doing your own models and I see you on the next one.
I’m pretty excited to share this with you – We are gonna do 3D Mapping with Pix4D and Mavic Pro. We are going to use Pix4D and Mavic Pro make a 3D model of a water tower nearby.
In case you want to skip to Part 2 to see the final result.
This is my first 3D mapping experience, but I will show you the simple steps I used to create a 3D Object with Pix4D from footage captured by the final 3D model on the computer. You will also learn some of the pitfalls other tutorials leave out when things are not going as planned.
Before we start I want to remind you that we are uploading drone and ewheel related material to help you get the best out of your equipment. So if you are new to this channel consider subscribing so you do not miss out on anything.
Today we will be using software from the Swiss company Pix4D, they have been around from 2011 and it seemed like a pretty easy solution to me started.
There are other options like Dronedeploy that work in a similar way. Have you tried 3D mapping, share your experience in the comments section below.
To build the model you basically capture a series of overlapping 2D images and a software algorithm stitches the images together to build a 3D model from this. It’s pretty amazing what results can be achieved.
We are using Mavic Pro to capture the footage, but other drones can be used as well. Because the software plans the autonomous mission based on your input, you need to make sure that your drone is compatible. Most of the DJI drones are supported as far as I know.
Check out Pix4D compatibility list:
First, you need to go the AppStore or PlayStore to download the Pix4D capture app. You need to get the PIX4D Ctrl + DJI as well if you have a DJI drone. I have included links the App stores in the description below. I’m using the Android version for this mission.
Now we are ready to fetch images of the local water tower. Before you take off make sure your drone is running the latest firmware. Also, note that some of the screen recordings you will see have been speeded up, so not all is replayed 1:1 so what you experience in real life might differ from what’s in the video.
Sometimes it takes a while for the drone to take off. I have experienced delays up to 10s or more before anything happens. Sometimes I had problems where the App will not start the mission. There is luckily a work around. Just wait for an error message and then relaunch the mission. This is annoying, but at least it works the second time.
Further, I uninstalled to DJI go App to make sure it did not conflict with the Pix4D software, but it did not seem to solve the problem completely.
Well, you just witness a real flyaway of my Mavic, this was really scary stuff as the drone kept flying away from its mission and I had no control. The solution was to force it into Sports mode and take manual control. It took a few attempts to make it react, but eventually, I gained full control and could bring it back safe. To me, it seems like it’s approaching the flight path way too fast so it overshoots the waypoints. Pix4D you should consider making a setting to slow down the approach to the first waypoint.
After this experience, I want to add a disclaimer, that you should play with the Pix4D at your own risk and be aware this can happen. I hope Pix4D will look into this and fix it, as this is NOT ok.
Even if this was scary I decided to take one more for the community and see if I could complete a full mission.
This time the mission was a success and Mavic Pro captured 31 images. Unfortunately, I did not frame the tower, so was forced to do it again.
In Part 2 I will complete the mission and capture a full model of the water tower and convert it into a 3D model that can be viewed on the computer.
Hope you enjoyed the first part of this 3D mapping experiment, if so then smash that like button below. If you are new to this channel hit the subscribe button on the logo next to me so you don’t miss out on Part 2.