Combining Drone Data with iPhone Data

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Chapters:
0:00 Intro
0:16 Real Time Kinematic
1:51 Measuring GCPs with viDoc RTK
5:07 Drone Data Collection
6:57 viDoc Data Collection
10:27 Calibrating Data
13:42 Georeferencing GCPs
15:29 Analyzing the Point Cloud
About Professor Rami Tamimi:
Rami Tamimi is an American doctorate student at The Ohio State University working towards his Doctor of Philosophy in Geodetic Engineering. With over 8 years of experience in the Land Development Industry, his experience revolves around traditional field surveying, civil design work using AutoCAD Civil 3D, and geospatial technology including LiDAR, SONOR, and Photogrammetric data acquisition and processing with the use of Unmanned Aircraft Systems or Drones. He is also a University Professor and creates instructional video content on KZbin.
#dronemapping #pix4d #vidocrtk

[@ddcDan]

Dude, you're a scientist!

[@DRONefuntoo]

He’s a real Dr. btw

[@jesusreyesXYZ]

That was awesome! Really enjoyed your workflow and the final results which are very impressive! Thanks for sharing!

[@InspiredScience]

Rami, with Pix4Dcatch and LiDAR+Photogrammetry, you always want to slow down and move the camera very slowly, when pointing to areas further away (for example, the roof soffits in your example here). Also, if you set the overlap to about 90% in settings, this is a big help because terrestrial photogrammetry needs a lot more overlap than very consistent aerial.

[@bombaclad8632]

As a surveyor myself I would like to comment, using a different workflow with just a drone can yield much greater results than being shown. I have P4RTK with GNSS Rover and Pix4D. I agree that under the roof is extremely difficult to capture with the drone, however It is possible to get much more from the drone than this. The P4RTK is an extremely capable drone, it should be given more of a fighting chance than this. No hate towards you Rami, I really enjoy some of your videos.

[@scottkarlins]

I believe he was showing that you don’t have to fly super low to capture your oblique imagery if you have an iPhone and viaDoc. There are many ways to do this type of project. For me I use a DJI M300 RTK with a Rock Robotic R2A LiDAR payload and walk around the house with a NavVis VLX. Depends on what hardware you have or can rent.

[@bombaclad8632]

@@scottkarlins Thats fair what you are saying. I just think that people looking for information on this drone before buying or renting could be lead slightly astray. I think its just fair to the drone to mention that with the proper workflow very good results can be achieved.

[@bombaclad8632]

@@scottkarlins On a side note, how do you find the VLX, im finding in my country its been fairly badly marketed. They are trying to sell it as a replacement to all the other scanners on the market. I use a Leica P40 and RTC360 on a regular basis, and I was basically told I can sell them off and go to the Navvis. We got a hands on of the data from it on a site versus a Riegl VZ400i and it didnt even compare.

[@scottkarlins]

@@bombaclad8632 Which country are you from? I can tell you the datasets are very nice. However it is not a full replacement for a terrestrial laser scanner! The VLX does a lot, and it is best indoors. For outdoor, you need vertical assets in order to not get drift or a SLAM break. You also will need control for very large indoor and very large outdoor areas in order to validate your datasets. I regularly fuse aerial LiDAR, TLS and VLX data, and with control it works amazingly well. Contact me on LinkedIn if you want to discuss further. Happy to talk shop!

[@bldit]

Thank you for the valueable Content Rami. We really believe that this kind of Useage of different Technologies and their different Advantages is a great Way to work.

[@nataliagilewska5693]

Wow, this is such a cool way to get a unique perspective on the world around us! Using drone data in combination with iPhone data really adds an extra layer of depth and detail to the footage. Great job!

[@nicholaspratt1786]

So freaking cool getting the GCPs right from the phone, that is the future!! Thanks for another great vid Rami. Great work and super informative. Keep on and please make the feature extraction TIN video for carlson photo capture survey canvas Pleaseee!! Cheers! ty ty

[@ngaruiyagakuru4849]

Thank you just saved my first big part of my career

[@Phuong.Nguyen-]

Thanks for sharing another amazing video with helpful information my friend :)

[@jle1981]

I really enjoy your videos, you explain surveying very well either for a brand new greenhorn or a seasoned field crew chief…

[@GeoKnowLearning]

Would love to see how the mesh/obj file turns out!

[@shady_askary]

Rami you good person. Actually you the master of the upgrade survey technique

[@Pedro5antos_]

Really interesting content! Not sure why youtube recommended this video for me, but was awesome watching!

[@vasileiosalexandridis7075]

Thanks for sharing this interesting video! It would be quite interesting if you could test this approach on a natural enviroment (e.g. trees), and then check if you can get "clear" pointcloud to extract insights regarding tree height, diameter etc.

[@wrecktech]

Vegetation is difficult because leaves move with the wind or breezes. Since he is in Michigan, a project like you describe would be more possible during the winter when leaves fall off the trees but would be harder because batteries don't last as long in the cold.

[@ai4px]

I was converting maps to WGS84for use in APRS ham radio programs back 15 years ago... I thought SC and AZ were the only states to use international feet. Man, you know your stuff!

[@JackCrombie]

Great video Rami! Have you tried bracketed exposures from the drone to increase information captured in the shadows? Brackets capture “correct” exposure, and then a number of stops under and over from the same position to give you more dynamic range. Because you have positional data from each image you don’t need to process them as a HDR to add the images to the dataset like you would if you were using the images in traditional photography.

[@jerseyshoredroneservices225]

I don't know if the rtk corrected positioning would be good enough to align bracketed exposures but the software could probably do it the same way it does other alignment, by matching up common points. He could achieve the same thing a lot easier by shooting on a cloudy day lol. The p4p camera has been a consistent source of frustration for me with its limited dynamic range and poor performance in low light/ high ISO situations :-( I wish it didn't cost so much to fly an SLR 😩

[@RamiTamimi]

Yeah I needed to do this for this project and I just didn't. My main focus was demonstrating how the drone and iphone can be used together.

[@2252ryan]

Thanks!

[@2252ryan]

Rami another great presentation! Truly well done. Keep this up! Q 4 U. I have an iPhone 13 Pro and I am wondering if I should wait for the iPhone 15 before I purchase the viDoc unit. Thoughts? Also I have the Emlid Reach RS2+ as well as the DJI D-RTK2. Which of these units are better fit to be used with viDoc? I bought the DJI RTK to be used with my Matrice 300 and I am wondering if the viDoc can utilize that as its base or not. Thanks!

[@jhonybenavides9921]

Thanks for the great video. What if I don't have an NTRIP service connection? Can I link the RTK antenna attached to the iPhone to a local base station? Let's say an Emlid receiver.

[@mm2dip]

Thank you for everything you do. The RTK for the iPhone where can I order it..?

[@delroybanman]

Very nice video! The company I am working with is interested in getting into drone surveying. We would like to get the Phantom 4 RTK, but we are having a problem getting one, because it has shown out of stock on the DJI website for the past two months. Do you have any suggestions on getting one?

[@janventer7527]

Rami thanks for the great videos. Would a drone like the DJI Mini 2 work for something like this or not really? How important is the RTK function if I am not a professional surveyor?

[@Kumarswamy_Hosmath]

@rami - would there be any limitation wrt size of the space to be captured? and can you do some tests on level of details that can be captured with the rtk+iphone? also, how about acomparion of iphone+rtk vs iphone+rtk+gimbal?

[@ruthkimutai8014]

This is awesome which software are you using for your processing images?

[@alejandroibarra8335]

Thanks Rami, a couple of questions, to extract the data from the iphone do you need to have a subscription from the software, or is readily available after a one off purchase? also what is yoru personal opinion on RecapPro from Autodesk (if you have used it..) 🙂

[@fabricer.9426]

Very nice

[@GedeusPlannning]

Can you show us the mesh? Would be really cool and useful for many

[@CrazyMike²]

More like this, how about adding it to UE5

[@dronesolutionsllc453]

Great Video, we use the phantom 4 (non RTK) for our TOPO's in mountainous areas, do you think the viDoc would provide good supplemental data for the low (high vegetation areas)?

[@billyandriam]

Hi! I also use the P4 (Phantom 4 Pro+ v1 in my case). Do you use any PPK with it?

[@davidkierzkowski]

Have you ever merged a indoor building scan with a outdoor?

[@EVOlutionHTC4g]

How does the viDoc accuracy compares to Emlid RS2 in collecting GCP points?

[@kiohaha]

so the iPhone 14 with the L1 and L5, is this as good as the rtk? love to see your review

[@jlm5073]

Can I still use LiDar sensor as my dataset when I don't have the ViDoc RTK?

[@jle1981]

Couldn’t you fly a site and then just fly the drone manually around at about eye level or have it follow you around and then merge that with the Ariel orthomosaic?

[@dezeindra2190]

Thanks for sharing...but Rami...need your advice...please correct me if i'm wrong... 1) in drone method we reconstruct pointcloud from images...so do we still need RTK instead increase the image overlaping ... 2) Using phone lidar with RTK... what about the accuracy for the objects that have slope with certain angle...eg. at the excavation projects

[@cruzadomuerto]

Se podría usar esto en interior de una galería de una mina.

[@yellowboat8773]

Can you do this without the rtk module. Understand the accuracy would be less but some of us dont do this for work so have no need for the vidoc module

[@uncletom1986]

Dude set up a GPS Base and test the accuracy of the Vidoc should make it even tighter !

[@josephbaran6279]

I know this is a pix4D product, but can you use metashape pro?

[@wolfebuilds1024]

I am looking to do stockpile surveys inside of warehouses. The lighting is poor and can be dusty. The roof does have lights and trusses that can be obstructive and are at a range of 30' to 35' above grade. the stockpiles we are looking to model are 25' x 100' or 50' x 100' and up to 20' in height. I am using a Mavic 3e and drone deploy but keep having issues with the images properly linking together into one model. Any tips?

[@shubinternet]

So, I'd be curious to see how you turn a capture like this into a real, cleaned up 3D model of the house in question.

[@jle1981]

Do you think this combination of phone and drone would work for a large scale tree survey?

[@narsalalbiola7983]

Sir what apps can I download in Iphone13 in order to used this in survey.

[@jm-lz8dq]

puedes hacer topografia ?

[@AegeanEpiphany]

Any reason why you didn't mention DJI Mobile RTK base station option? The whole reason for a Phantom 4 RTK is the ability to do without GCPs... Also - if you are going to push PIX4D then you should ideally mention alternatives like Agisoft's Metashape...

[@galinaborouhhina3969]

Why not just use Reality Capture and do away with all that RTK fancy stuff?

[@BigBoiBalu]

Omg 😲

[@rumhave9632]

I think you flew your drone too high. There was alot of floating pixels. I'm still in awe of that vidoc.

[@jerseyshoredroneservices225]

The very contrasty light that day combined with the limited dynamic range of the p4p camera was really not helping... That viadock thing is very cool $$$

[@RamiTamimi]

That's mainly due to cloud coverage. Of course the different type of camera also plays a role as well.

[@TheJoaolyraaraujo]

👍

[@stoniebro-nies]

Damn cool but not for $10k plus $6k for the program. When there are other ways that have the same quality.

[@TopangaCanyon]

know any other ways? trying to get into lidar for making game maps, I have a lidar iphone