Texture: texture drives the reconstruction of 3D.There are three key aspects to delivering good imagery: However, the quality of your 3D model will depend upon the quality of your imagery. This means that photos from any camera will work and, indeed, the proof-of-concept for SfM was crowdsourcing photos from the internet. The general rule of thumb is that you want sharp, well-exposed photos, however, the software will automatically reject images that aren't good enough. So, how do you actually go about doing it? Shooting Photos It is low-cost or free and allows anyone to produce 3D models of high quality. We are now seeing applications across the full breadth of the sciences and arts, but what is more impressive is the egalitarian nature of the software. Photogrammetry has been around for the best part of 100 years, but it was the advent of digital photography, fast PCs and new "Structure from Motion" (or SfM) software that has led to a revolution in its use. One step on from stereoscopy is photogrammetry - not only can you view in 3D but also create accurate 3D models. In the first article of this series on Creating 3D Models Using Computational Photography I outlined the concept of 3D vision and how photographers have exploited stereoscopy for over 150 years to produce stunningly immersive views of a landscape that once was. Want to easily create a 3D model from a set of photos? Find out how to do it in this tutorial.
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