Search Results for: photogrammetry

My “self-built” photogrammetry rig

There are a large number of companies out there selling a large number of different scanners employing all kinds of methods for 3D scanning. LIDAR scanners, structured light scanners, small laser scanners, mechanical arms with and without lasers attached, (semi-)automated … Continue reading

Posted in Uncategorized | 1 Comment

Photogrammetry tutorial 13: How to handle a project in Reality Capture

Well, this is a long overdue post, and I could have saved myself a lot of emailing if I’d written it earlier. Basically, it is a sibling, even a twin to my tutorial on how to handle a project in … Continue reading

Posted in 3D modeling, How to, photogrammetry | Leave a comment

Photogrammetry tutorial 12: my workflow for Agisoft Photoscan as a diagram

The last tutorial on how to handle a project in Agisoft Photoscan Pro describes all the steps I usually do in some detail. Here, I’ll show you a flow diagram, which gives a nice concise overview for those who do … Continue reading

Posted in Digitizing, How to, photogrammetry | 2 Comments

Photogrammetry tutorial 12: How to preserve strike and dip or cardinal directions in your 3D model

Photogrammetry is a really nice and easy way of surface digitizing specimens in collections, but also useful in the field. Recently, Marie Attard, a colleague working in England, asked me to help with a project that deals with rock surface … Continue reading

Posted in Digitizing, How to, photogrammetry | 3 Comments

Photogrammetry tutorial add-on: The consequences of optimizing a sparse point cloud

If you build a photogrammetric model following the workflow I suggest in this post, one of the steps is optimizing the sparse point cloud (tie point cloud) via gradual selection and deletion of points. Here’s why that matters. Below you … Continue reading

Posted in Dinosauria, How to, photogrammetry, Sauropoda, Sauropodomorpha, Tendaguru | 12 Comments

Photogrammetry tutorial 11: How to handle a project in Agisoft Metashape (Photoscan)

EDIT April 29, 2020 Up to speed with the latest version of Metashape. Note that there is a mesh creation method directly from depth maps. I am not happy with it, and for reasons given below I doubt I ever … Continue reading

Posted in Conferences, digiS, DigitalSpecimen 2014, Digitizing, How to, MfN Berlin, photogrammetry | 41 Comments

Photogrammetry tutorial 10: an improved method for mid-sized objects

Last December I was granted a sack full of money by the Senatskanzlei Berlin for the 2015 digiS programme. I’ll soon post more about that; what matters for this post is that I promised to mass digitize the rather unwieldy … Continue reading

Posted in 3D modeling, Digitizing, Dinosauria, Giraffatitan, How to, MfN Berlin, photogrammetry, Sauropoda, Sauropodomorpha | 10 Comments

Photogrammetry tutorial 9: Quick and dirty!

Over the course of previous tutorials and in my paper with Oliver Wings I’ve given quite a bit of advice on how to photogrammetrize objects properly. Today, I’ll address the other end of the spectrum: how to approach photogrammetry unprepared … Continue reading

Posted in AMNH, Digitizing, Dinopics, Dinosauria, How to, photogrammetry, Theropoda, Tyrannosauridae, Tyrannosaurus | 6 Comments

Photogrammetry tutorial 8: scaling “with hindsight”

Recently, I mentioned in passing that I took some photographs of specimens at the AMNH in New York so that I could better scale models I had calculated from photographs taken during my previous visit. Here’s how that worked out, … Continue reading

Posted in AMNH, Digitizing, Dinopics, Dinosaur models, Dinosauria, Khaan, Maniraptora, Oviraptorosauridae, photogrammetry, Theropoda | 8 Comments

Photogrammetry tutorial 7: multi-chunk project handling

In palaeontology (and many other disciplines) you often deal with specimens that you wish to capture in what I term “720°” – all around (360° around it for the vertical axis), and bottom and top, too (360° around the transverse … Continue reading

Posted in 3D modeling, Digitizing, Dinopics, Dinosauria, Giraffatitan, How to, MfN Berlin, photogrammetry, Sauropoda, Sauropodomorpha | 3 Comments

A more detailed take on Pinus macro photogrammetry

Previously, I described a few photogrammetry tests I did with a macro lens, but I didn’t go into the technical details much. Some people have asked me how exactly I took the photos, so here’s the detailed description. First of … Continue reading

Posted in 3D modeling, Digitizing, photogrammetry, photography, plants | 1 Comment

PHOTOGRAMMETRY IN PALEONTOLOGY – A PRACTICAL GUIDE

While I was on holiday my latest paper finally went online. It is a joint effort with Oliver Wings that details some good approaches for photogrammetric 3D modelling specimens. You can find the PDF at this link. The web version … Continue reading

Posted in 3D modeling, AMNH, Conferences, DigitalSpecimen 2014, Digitizing, Dinopics, Dinosaur models, How to, Khaan, Maniraptora, Open Access publishing, Oviraptorosauridae, papers, photogrammetry, photography, Theropoda | 5 Comments

Photogrammetry with a macro lens

So far, most of my photogrammetry efforts have dealt with specimens in the several centimetre to meter range. Bones, skulls, entire skeletons. The smallest models I created were of ammonites – more on that currently on-hold project later – with … Continue reading

Posted in 3D modeling, Conferences, DigitalSpecimen 2014, Digitizing, photogrammetry, photography, plants, raves | 11 Comments

Photogrammetry tutorial 6: building a model from the photos

EDIT 12 May 2015: Please see this post for an update of some of the methods described below! Sometimes, a specimen is better dealt with without a turntable, even though it theoretically could go on one! We’ve been through the … Continue reading

Posted in Digitizing, photogrammetry | 14 Comments

Photogrammetry tutorial 5: a little visual aid for you

Here’s a little video I cooked up to show the turntable photography method I described in part 3 of this series. I do not wish to part with the dough to buy the video update for WordPress, so please find … Continue reading

Posted in Digitizing, photogrammetry | 3 Comments