However, just to be safe, please note the make and model of your camera in case for some reason it is not recorded in the EXIF tags. The software we use takes the camera/lens parameters from the EXIF tags in the jpegs. Obviously in the case of mounted skeletons, it may not be feasible to go over the subject as in the figure, but photos from varying angles are very useful.Ĭamera: Any camera should do. The figure below shows the camera positions for a small object. Taking shots as you move closer to the subject allows the software to make the links easier. Include overview shots of the entire subject and closer shots that can be located in the overview. As such, when taking photos, ensure considerable overlap between images. In order for any given point to be represented in the final 3D model, it must be present in at least 3 photographs, preferably many more. a scale bar) is present next to the subject being photographed, and that photographs incorporate this known scale are taken as part of the process, so that the scale ends up in the final 3D model. As such, it is imperative that an object of known dimensions (e.g. Unlike laser scanning, the resultant pointcloud has no absolute scale. Scale: The first thing to note of importance is that photogrammetry is a scale-less method. If you have taken photos for producing a photogrammetric model before, you probably don’t need this guide. If you are unfamiliar with photogrammetry, hopefully this guide will provide a little assistance in how to take photos to maximise the quality of the final model. costly) features that I’d like it elsewhere, and 2. So that it’s here for completeness sake when I post my upcoming Photogrammetry comparison. However, I’m reposting for two reasons: 1. In fact, that academia paper has sat in ’s top 0.5% of papers in terms of views for some time. This is a re-post of a document I placed on a few years ago.
0 Comments
Leave a Reply. |