3D, OpenDroneMap

Scanning the world with OpenDroneMap or Ne’er cast a cloot til Mey’s oot

In previous posts, we’ve scanned whole cities, cliff faces, down to small things like ukuleles. Such work is getting some to claim that the project needs renamed. Maybe… : Now, for a new problem space: plant identification. The background There are a few challenging plant groups to identify in the US. Among the ones I heard about in freshman biology: sedges (think: like grasses but … Continue reading Scanning the world with OpenDroneMap or Ne’er cast a cloot til Mey’s oot

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3D, Analysis, OpenDroneMap

ODM 0.9.8 Adds Multispectral, 16bit TIFFs Support and Moar! — OpenDroneMap

WebODM introduced support for plant health algorithms about a month ago. It was no secret that we concurrently started work to support TIFFs file inputs and multispectral cameras, both features that have been highly requested. We are excited to announce the release of ODM 0.9.8, which adds novel features as well as bringing significant improvements!… ODM 0.9.8 Adds Multispectral, 16bit TIFFs Support and Moar! — OpenDroneMap Continue reading ODM 0.9.8 Adds Multispectral, 16bit TIFFs Support and Moar! — OpenDroneMap

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3D, OpenDroneMap

Choosing good OpenDroneMap parameters — OpenDroneMap

Introduction I had an interesting question recently at a workshop: “What parameters do you use for OpenDroneMap?” Now, OpenDroneMap has a lot of configurability, lots of different parameters, and it can be difficult to sift through to find the right parameters for your dataset and use case. That said, the defaults tend to work pretty… Choosing good OpenDroneMap parameters — OpenDroneMap Continue reading Choosing good OpenDroneMap parameters — OpenDroneMap

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Other

3D Reconstructing… everything, part cinq: the beginnings of 3D construction

In previous posts in this series here and here II and here III here IV, we’ve worked through a surprising use case in OpenDroneMap: unreferenced imagery for general 3D reconstruction. Let us take this one step further toward 3D construction. If we have a model that we can georeference (✔️) and thus can do things like create contours (✔️) then maybe we can use these … Continue reading 3D Reconstructing… everything, part cinq: the beginnings of 3D construction

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3D, OpenDroneMap

Seeing the trees and the forest

Let us explore a little more deeply the opportunity for drone photogrammetry for documenting deciduous forests. In previous posts, we explored exactly how, under the right conditions, we can see through leaf-off forest to the terrain below in ways that are quite favorable relative to techniques like lidar: But a side effect of this capacity, is resolution and reconstructions that reconstruct all of the standing … Continue reading Seeing the trees and the forest

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3D, OpenDroneMap

Stone Town Digital Surface Model — Part Two

Thanks to the tireless work of the folks behind the Zanzibar Mapping Initiative, I have been exploring the latest settings in OpenDroneMap for processing data over Stone Town. I managed to get some nice looking orthos from the dataset… https://smathermather.com/2020/01/15/stone-town-digital-surface-model/ After a few days of mapping the very small 🎸, let’s go back to a city scale, and back to Zanzibar. In the previous post, … Continue reading Stone Town Digital Surface Model — Part Two

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3D, blender, OpenDroneMap

3D Reconstructing… everything, part quatre: a fully referenced ukulele

In previous posts in this series here and here II and here III: , we’ve worked through a surprising use case in OpenDroneMap: unreferenced imagery for general 3D reconstruction. To get there, we eventually included ground control in the form of a coordinate system set by a builder’s square set in the scene. (Fair warning, I did find a bug in the automated calculation of … Continue reading 3D Reconstructing… everything, part quatre: a fully referenced ukulele

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3D, blender

3D Reconstructing… everything, part trois: ukulele control points

One challenge of working with unreferenced data in structure from motion is giving those data reference and context. For the original ukulele reconstruction, I started with an unreferenced model, which OpenDroneMap outputs, imported that into blender (with the File:Import:Wavefront (.obj) option and manually rotated, translated and scaled it into my scene. This meant rotating it quite a bit on all three axes and moving the … Continue reading 3D Reconstructing… everything, part trois: ukulele control points

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