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UAV Mapping Post Processing Tutorial 1 (VisualSFM, CMVS)
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- Опубликовано: 29 июн 2013
- flightriot.com This tutorial shows you how to orthorectify your UAV aerial imagery and generate 3D point clouds. All software used is freely available for non-commercial use.
The software covered in this video are Changchang Wu's VisualSFM (homes.cs.washin...) and Yasutaka Furukawa's CMVS (www.di.ens.fr/c....
A zip file containing the software preconfigured for use as described in the video tutorial can be found here: flightriot.com/...
UAV Mapping Post Processing Tutorial 2 can be found here:
flightriot.com/...
That is a great point. If pictures are geotagged you can use that to your advantage in post processing to geographically constrain the search. I have not tried this function yet. I will be covering leveraging GPS data from autopilot telemetry into post processing in a later tutorial so I should probably cover your suggestion at that point as well. Thanks!
To anyone who may still watch this, a polarized lens filter over the camera should reduce or kill the glare given by reflective surfaces, namely water, and should allow for a more complete scan. Although polarized lenses do tend to darken the image bit, you should be able to do color correction either on the images or the 3D model.
By the way, CMVS itself can be used freely for commercial work as well. CMVS also has a programme for purchasing a license which will allow a vendor to distribute modified versions of CMVS without also distributing the source code.
Thanks, I tried this last night by walking around with my GPS enabled cell phone, to test the program, but it couldnt apparently use pictures from such a low angle. As soon as I get my drone up and running, Ill start playing with it. Thank you for making this program, those of us who want to learn dont have pockets as deep as 350 dollars month for other de-functioned software.
Thanks for the positive feedback!!!
Very nice tut!. You might also consider the sfm capabilities has to use the GPS data of the exif to ease the image matching.
Thanks for the information. You mentioned the next step to ortho. Can you let me know where to go to get that. Thanks.
Great tutorial! Keep them coming!
Fantastic tutorial, thank you very much
Great video & thumbs up. Cheers from Sint Maarten
Hi. Is there any chance for you to share with me the zip file with all the software configured? I tried several times to generate .ply file but wasn´t able. Im afraid I didn´t configured files properly. Many thanks.
Excellent and geat tutorial. Thanks a lot !!
Can this be done with video? Can I just use a geotagging camera on my gimbal without the ardupilot and other stuff?
what kind of camera you use to take this photos because the geo data things?
do you think it will work if i take an aerial video footage, extract jpeg sequence and try to use this images to make the 3D point cloud?
love it. Great tutorial
i tried to register...but it kicks me off always...sad.
only i can see...ERROR:Please complete the PlayThru again
what should i do...
What does it mean when you try the sift and it says "unable to locate sift binary"?
Really interesting! i have a question , can I georeference a cloud points and use the product in a GIS programm?
i think yes...but you can georeference point clouds in another software like Cloud compare
Thanks for you video. But, What kind of data contain the camera/image files?
Hi duffnyc77,
Excellent and geat tutorial. Thanks a lot !!
Can I use one imagen? what archive tipe canI process?
I think somebody already asked this question - how did the photos capture location and orientation? Were the photos geotagged?
Thanks
+Binesh Maharjan They don't need to be geo tagged. But it helps in some software that can take advantage of it
The software can measure the depth and movement based on the things that move in the photo spirometer shot to shot.
First link not working... seems like site is not online anymore =(
Hey @duffnyc77, I have a small problem, whe I do the third step (to CMVS) it says:
"Runing Yasutaka Furukawa's CMVS/PMVS tool...
cmvs H:\Fotos\Fotos llit\CMVS_02.nvm.cmvs\00\ 50 8
Yasutaka Furukawa's CMVS cannot be located!
Please go download or compile them and
place them where VisualSFM is or in your PATH"
What can be happening?
Thanks!
I've got the same problem :(
ThePasceify ME TOOO did anyone figure out how to deal this problems?
so cool !!! i love it :)
I guess this is no longer available?
Very Coooool.
Great tutorial! Can you please tell me your computer specs? I am getting the following error:
1 cluster is generated for pmvs reconstruction.
pmvs2 F:\Ebee\2015-0~4\img\PARCEL~1.CMV\03\ option-0000
This may take a little more time, wating...
7 seconds were used by PMVS
Loading option-0000.ply, 0 vertices...
ERROR: no points generated by pmvs2
ERROR: pmvs2 crashed? not enough memory? 32bit?
Mine is an Intel Core i7-2600 CPU @ 3.4 GHz, 32 GB RAM, NVIDIA GeForce GTX 570
Thank you for your help
also got this error. Did you figure it out?
I use a different data set and I was able to do the complete process
the photos were geo-referenced? I tried to use gopro footage.
Evan Hammac Not my case..I know there is a program that can take care of it, but haven't tried it. It comes with the zip file that you download from the flight riot page.
Thank you. So your photos were georeferenced? or they weren't?
Which kind of camera did you use?
Canon sx260 for this video
TOP!!!
This is free, what's the deal with that? Most mapping software I have seen cost around $4000. Let me guess they have the copyright to the photos and can do what they want.
Free for non-commercial use. No catch. Your data stays on your computer.
ok
Devil6CR also, this is a total pain in the butt compared to the commercial packages ;)
shoot me an email at duffnyc77 at gmail and I'll figure out what's happening and get you signed up. maybe browser compatibility? there should be a game you have to play and after that it should take you right through. I'm sorry about that, it's the first time someone has had a problem.