Category: Optics

3D, Camera Calibration, OpenDroneMap, Optics, Photogrammetry

Self Calibration of Cameras from Drone Flights (part 2)

(Modified excerpt from the OpenDroneMap docs) In a previous post on camera calibration, we discussed the possibility of setting up calibration flights that have the following characteristics: non-parallel (converging) flightlines of 20° with a 5° forward facing camera (assuming 0° is nadir). With OpenDroneMap’s –camera parameter, we can thus import camera models from a calibration flight and use that in a more efficiently flown “traditional” … Continue reading Self Calibration of Cameras from Drone Flights (part 2)

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GDAL, Gorillas, Karisoke, Optics, POV-Ray, QGIS, R

Gorilla research in Musanze, Rwanda: Hillshades continued

I’ve been working on base cartography for the research area in Rwanda. Unlike here in Cleveland, we have some great topography to work with, so we can leverage that for basemaps. But, it’s such a beautiful landscape, I didn’t want to sell these hillshades short by doing a halfway job, so I’ve been diving deep. Background First, some legacy. I read three great blog posts … Continue reading Gorilla research in Musanze, Rwanda: Hillshades continued

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3D, Image Processing, OpenDroneMap, OpenDroneMap, Optics, Other, Photogrammetry

Viewing Sparse Point Clouds from OpenDroneMap — GeoKota

This is a post about OpenDroneMap, an opensource project I am a maintainer for. ODM is a toolchain for post-processing drone imagery to create 3D and mapping products. It’s currently in beta and under pretty heavy development. If you’re interested in contributing to the project head over here. The Problem So for most of the […] via Viewing Sparse Point Clouds from OpenDroneMap — GeoKota Continue reading Viewing Sparse Point Clouds from OpenDroneMap — GeoKota

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3D, Bundler, Camera Calibration, FOSS4G, Image Processing, OpenDroneMap, OpenDroneMap, Optics, Photogrammetry, PMVS

MSF Canada Drone Day follow-up

Dirk’s MSF Canada Drone Day is officially the first blog post I have “re-blogged”. Please read: https://smathermather.wordpress.com/2015/07/13/msf-canada-drone-day/ or better yet here: http://dirkgorissen.com/2015/07/14/msf-canada-drone-day/ I had the pleasure of co-presenting with Dirk and Ivan, and the rest is well covered in Dirk’s post. It came together as an excellent day and I think you would be hard pressed to have had a better introduction to drones. The … Continue reading MSF Canada Drone Day follow-up

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3D, Bundler, Camera Calibration, FOSS4G, Image Processing, OpenDroneMap, Optics, Photogrammetry, PMVS

OpenAerialMap, OpenImageryNetwork, MapKnitter, OpenTerrain, and OpenDroneMap (cont. 1)

Citing my previous post, let’s move on to more specifics on my thoughts regarding the integration of OpenAerialMap, OpenDroneMap, and MapKnitter as projects. OpenDroneMap ❤ OpenAerialMap. OpenAerialMap will become a platform by which drone users can share their imagery under an open license. So, as the metadata spec for OpenAerialMap and OpenImageryNetwork matures, and as soon as a publicly available place for drone users to … Continue reading OpenAerialMap, OpenImageryNetwork, MapKnitter, OpenTerrain, and OpenDroneMap (cont. 1)

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3D, Bundler, Camera Calibration, FOSS4G, Image Processing, OpenDroneMap, Optics, Photogrammetry, PMVS

OpenAerialMap, OpenImageryNetwork, MapKnitter, OpenTerrain, and OpenDroneMap

This tweet: is the beginning of some fruitful discussion, I suspect. There are some really awesome projects gaining momentum. I’ll give an overview of them as best I am able. Let’s start with the one nearest and dearest to my heart (if you’ve been reading my blog, you can skip this part): OpenDroneMap. OpenDroneMap is an open source toolkit for processing drone, balloon, kite imagery … Continue reading OpenAerialMap, OpenImageryNetwork, MapKnitter, OpenTerrain, and OpenDroneMap

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3D, Bundler, Camera Calibration, FOSS4G, Image Processing, OpenDroneMap, Optics, Photogrammetry, PMVS

OpenDroneMap — GCP file format

Introduction: So much documentation to catch up on for OpenDroneMap. Probably the most important missing element is documenting the ground control point file format. This will be a file name gcp_list.txt to be placed in the root of the image directory that you are processing. Objective: The ground control point file associates locations in the input raw images with geographic positions, allowing for the output … Continue reading OpenDroneMap — GCP file format

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3D, Bundler, Camera Calibration, FOSS4G, Image Processing, OpenDroneMap, Optics, Photogrammetry, PMVS

OpenDroneMap — Now with animated GIFs

Ok. I confess, clickbait. OpenDroneMap won’t make the animated gifs for you. But come on! it can make the 3D models which you can view in Meshlab or where ever, and then create animated gifs. Ok ok. I promised animated gifs. These are from data contributed to our test dataset repo by  Aaron Racicot and Tomasz Nycz respectively.   Continue reading OpenDroneMap — Now with animated GIFs

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