Compare Open Drone Map to Pix4d

I have read on drone websites that pix4d is the gold standard for mapping. Does anyone have enough experience with both to show how the two compare?

Pix4D is a gold standard sometimes; other times ODM is the gold standard; other times photoscan and so on down the list of available reconstruction softwares :smiley:

I did a (very) small head to head about a year ago now - pix4D has amazing detail reconstruction and clean point clouds when there are many, well oriented images and you’re after geometric objects. ODM does way better in less rigorous captures, agisoft/metashape seemed to be the winning ‘all rounder’ (with its own set of quirks) and definitely the best at modelling vegetation with ODM a close second. It’s a bit more work to add GCPs to ODM processing - however it’s also a LOT less work to build ODM into a processing pipeline :slight_smile: - plus ODM has an awesome development community making it better all the time.

Those are my two cents - everyone likely has their own gold standard for their application - and all three are great at reconstructing stuff from photos.

So… swings and roundabouts and use what you like best!


Now Adam: how does ODM do with vegetation with Brown-Conrady?

I have yet to test… will find some data and get back to you :smiley:

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Hello @dwpeters123 ,

I am new to WebODM but have some 2 years experience with Pix4D.
Pix4D is robust software with UI, GCP managment, pointcloud editing and precise measurements.
WebODM is quick, free and the community is great :slight_smile:
Anyway, I would like to show you two maps made with same data set (on one picture comparison):

The one on the left is made in Pix4D. As you can see, it is nice, sharp and the lines are straight. Resolution is 1cm/px.

The one on right is processed with WebODM. With setup I read in the documentation:
–orthophoto-resolution 1
–texturing-nadir-weight 32
–mesh-size 300000
–dsm-octree-depth 11
It came out with resolution of 1,3cm/px, little bit blurry and the roof lines are wavy.

So this is my compare so far.
Maybe there is someone who would recomend better setting for WebODM? I would be thankful :pray:

Have a nice day and happy mapping :slight_smile:

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Use --camera-lens as brown. Let’s see if we can’t make that look a little better… :slight_smile: . Also, if you are going to ignore gsd, set your --dem-resolution: probably to 4 if your orthophoto resolution is 1.

Thanks for the recommendation. I have tried it and this is the result.

mesh-octree-depth: 11, texturing-nadir-weight: 32, orthophoto-resolution: 1, dem-resolution: 4, ignore-gsd: true, dsm: true, camera-lens: brown, depthmap-resolution: 1000

It is better in some way but it is not in the other way. You can see, the lines are more straight but there is little bit of wall in the result. Also there is a glich as you can see.

My goal is to find perfect options for high resolution map which could compare to Pix4D result. Any recomendations would be appreciated.