DJI Mini 4 Pro For Photogrammetry and 3D Modeling Review

This is an in-depth look at the DJI Mini 4 Pro when used for photogrammetry in a commercial capacity. How well does it perform. How good is it? Can you use your DJI Mini 4 pro to make money from your photogrammetry models? How good are the 3d models and maps that the dji Mini 4 pro makes?
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Producer: Jay Avenian
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[@JaysTechVault]

3d Model generation: aerialmodel.com/ Flight control software: waypointmap.com/

[@odinata]

I understand that you know what you are talking about, but you aren't explaining to us what you are doing.

[@harleydavidsonroadking9648]

Agree

[@benargee]

12 minutes isn't long enough to completely explain the whole photogrammetry process. This seems to be targeted at people who already know what to do with photos but are not sure about how it applies to the Mini 4.

[@Alek987]

You shoul implement instead flight line distance and flight hight, a GSD option and Overlap option, since every drone have known camera specifications this should an easy solution

[@Riveloperinc]

Brilliant idea man. But I absolutely can't get the RC2 remote to connect to Windows or Mac for the life of me. I draw the line where some forums had me trying to install some crazy drivers to get an old DJI program to even load.

[@joshuahogan-dripdoctorplum4988]

Hello, I’m struggling and could use your help. Using the free version, I am unable to successfully copy over the KMZ file. I copy the name of the existing file and delete, then rename the new file with the same name. Simply copying and pasting. When I go to open the waypoints in the RC2 the old points still exist and the new doesn’t. Is there a better way to communicate with you so that I can get this working? Thanks

[@жълтоухаводназмия]

bump

[@klove2842]

Thanks for the video. Does the obstacle avoidance work while on mission? Or will it go to a waypoint no matter what?

[@clancysmith3402]

Hey I have this same drone and used the waypoints. During the mission if there is an obstacle that the drone notices, the drone will terminate the mission and hover in place. This only works if you have obstacle avoidance turned on. If it is disabled it will go through with the waypoint.

[@nielwickens9657]

Same as, what software do you use

[@Getorti]

great video and great software! How do you transfer KMZ file to the DJI RC / RC PRO ? Thanks

[@ultragear207]

He has a new vid up on it now

[@JonDraper]

How do you know which waypoint you got to once the battery runs out? Do you have to be paying specific attention or does it have a memory?

[@zeynelkesim2854]

ı can't see how the saved flight route is loaded to mini 4 pro on the rc because of your holding angle and reflection or you dont want to show it

[@JaysTechVault]

Look at the tutorial

[@BryanSteacy]

Amazing video. Such good results from minimal photos. What is the photogrammetry photo you use? EDIT: sorry, I didn't notice the pinned comment. Thanks!

[@ycho]

what will happen if in the middle of taking photos the sprinkler suddenly turned on or there are people / vehicles running through? will it mess the final product?

[@husseinzakir6519]

This is amazing bro thank you soo much. I have a question. If I use the software with the waypoints and then I take a few manually then can these be combined into the software? Or do you have to just use the ones made with the waypoint?

[@DanielHelc]

Good job, did you calibrate the sensor before you processed these images?

[@XdekHckr]

what sensor?

[@snype9978]

Cool demo thx - I had only used mavic 2 as it could interact with their waypoint rtk software and tried pix4d and drone deploy etc and they always focused more on top down with a final oblique view - I notice your shots just do the oblique which is cool- do you know if you need the top down for accurate map view or maybe this doesnt matter so much? After parking two mavic 2s in trees (a pro and a zoom) I was going to get mini3pro as it had rtk but the mini4 looks so much better for range etc and from the looks of your vid it’s completely do-able for some mapping and 3d work which I use a bit in my construction business with Web odm 😊

[@jcochran57]

Very nice app. Can you make this app work with the Mini 4 Pro and Apple IOS? Thanks

[@JaysTechVault]

It does already?

[@cherryfruit5492]

I like exploring photogrammetry in VR

[@majoob2]

You said the gimbal will tilt down *almost* 90°. For my larger area mapping / orthophoto jobs, i need true 90° / nadir orientation. Is it close enough to 90° for this to work?

[@ultragear207]

Yes it goes true 90 degrees

[@Alex45684]

what software you use ?

[@JaysTechVault]

I’m actually making my own and I’ll be releasing that. It will have a free version for people to learn. It should be available within the month.

[@ClarkFamily2014]

This software is WebODM, or at least some version of it. I recognize the left tab and the pictures in the upper right corner. It's an open-source photogrammetric software that until very recently had to run in a virtual machine. The latest version can run natively in windows. I have been using it for almost two years now, and am just scratching the surface of what it can do. Being open sourced, anyone has access to the source code and can modify it or create an API of their own.

[@ClarkFamily2014]

I suspect what he is doing is coding a better and more intuitive user interface and combining the options to make a more beginner friendly version. It definitely has a bit of a learning curve. It's not as bad as other software out there, but it can certainly be confusing to anyone just getting started.

[@livinagoodlife]

@@JaysTechVaultyou really should be stating that you’re adapting open source software than making out you’ve created it entirely yourself

[@JaysTechVault]

It should be included in the bottom of Aerialmodel in the next update. There’s a lot of additions I’m working on.

[@firefighterleetiktok85]

To overcome the controller crashing as that's the main reason I stopped my premium subscription have you tried removing the automatic action like "take photo" form the waypoint like and let the controller do it or does it not make a difference? There must be a way to use an iphone or ipad with the RC2 controller as it just crashes or over heats.

[@JaysTechVault]

The controller crashes when you have to many points. If you are doing a large area just do the straighten lines + timed shots for the same effect. The controller crashing isn’t even on my end.

[@firefighterleetiktok85]

@@JaysTechVault would actually be good to chat to use sometime about this as i would normally program a flight in Excel knowing the SDK and the stacking process. I've never used or know how discord works but I think you have that, is it a voice thing?

[@SunnyTechno]

why I cant generated? I buy premium

[@JaysTechVault]

??? Did you join the discord server for help?

[@SunnyTechno]

@@JaysTechVault now i will join

[@SunnyTechno]

@@JaysTechVault i am sorry, which discord server I have to join?

[@JaysTechVault]

@SunnyTechno discord.gg/QaYYhkbt

[@SunnyTechno]

@@JaysTechVault done, please help me

[@helloworld7796]

Hey, how precise is mapping it? I mean how precise would be the measurement for the house?

[@Cw7003]

Not that accurate. You need another device to give it good triangulation. This type of drone doesn’t have RTK capabilities. You could just take a single real world measurement and scale your model using that and that would make it better.

[@JaysTechVault]

However my universal drone RTK module will be launching soon.

[@fellouss]

Hi! Premium member here :) For mapping, is it better to let the cam at 45° or at 90°?

[@JaysTechVault]

Depends. Do you want a map or a model?

[@fellouss]

@@JaysTechVault i mostly want to map

[@JaysTechVault]

Then 90 degrees

[@Валерий-ц9л6й]

What 3d modeling program is in the video?

[@UltraVegas76]

Looks like Webodm

[@robingattiphotography]

I also want to know! I don’t really do discord so I hope the answer is posted

[@JaysTechVault]

aerialmodel.com/

[@conorstewart2214]

It seems like it should be possible to use video instead of photos to do photogrammetry. I know videos produce a large number of images which is probably too much to process but if you set it to 24 fps and write a program to take every 24th frame from the video then that could work. The resolution may be lower that you get from the photo mode though. Is there any reason that video isn’t used? Edit: since you are already only using 12 MP then 4k 24 fps video would be fine, it would just take up a lot of storage, but then after you select every 24th or 48th frame you can delete the original video and save a lot of space, also since SD cards are cheap enough it shouldn’t really be an issue.

[@DroneSlingers]

You actually over thinking and over complicating it but got the right idea. IMO videos always give me the best results, but like you said it does also produce like 30 still frame images every second. That's when you use a program that can extract all the best frames. Use Reality Capture for a free video slicer and a good one. Now the reason I've decided to just shoot video instead of wasting more time trying to snap enough pictures is because a video has a continuous flow which I find drastically helps the camera tracking easier which ultimately results in a more connected model. We have come to a point that we can shoot video with the same quality as the best cameras. While they may have crazy quality detail, it's diminishing returns and makes the whole process longer for something that may end up slightly better. I don't claim to be an expert, but I can say I've been doing 3D scanning since the iphone 12pro max which introduced the LiDAR Sensor.

[@livinagoodlife]

@@DroneSlingersyou’re both overthinking it. Videos introduce blur and don’t have gps coordinates to help software to blend

[@HarryHamsterChannel]

People prefer to overpay in order to subsidize DJI's military and Industrial divisions.