| The better the photograph, the better the output quality. Photogrammetric output will always have noise. Some materials don't really contain any surface details that the algorithms could use to attach feature points to, so they will be blank. Large white walls and large windows
are especially difficult. Don't crop the photos. Prefer slight underexposition. For each detail you want to capture, have it visible at least in three photos. Capture photos from different position (ie. rather move yourself than just turn the camera) with at least 30% - 50% overlap between photos. You can find lots of tutorial in the internet. Search term that hits gold is 'photogrammetry tutorial'. For example: https://medium.com/realities-io/getting-started-with-photogr... If you just want to try out the technique, I suggest you download the free test version of Zephyr 3D. You can just give it a bunch of photos and it does a fairly sane ops with the default options. https://www.3dflow.net/3df-zephyr-pro-3d-models-from-photos/ If you like it, you can start experimenting with free and commercial tools including the one in the topic of this thread (see my other post in this thread for some other photogrammetric tools). If you have a large set of photos you will start to need a fairly beefy computer with tens of gigs of RAM the least. But, you can get pretty nice results for e.g. just a single house with just a regular modern desktop PC. |