Hello everyone, we are in front of the church of Saint-Ondras and the challenge that I propose to you today it is to manufacture, in 3D printing, this monument then we will go through a first step that is photogrammetry and then 3D printing so photogrammetry and 3D printing are two technologies that blend very well since thanks to 3D printing we will be able to actually build the 3D model that has been generated by the photogrammetry technique the steps will be the following first of all we will plan mapping missions to make the right pictures of the church using DJI GSPRO from this series of photos, we will go to Agisoft Photoscan, so I have the standard version and we will create the 3D model of this church and from there, we will be able to export from Agisoft Photoscan an OBJ file we are going to inject into CAM software for 3D printers so me personally, I’m using IdeaMaker and then behind, we will be able to launch the 3D printing of this church then in the end, it will remain a stage of painting so there will have to use our hands and a little patience to give an appearance resembling this church if you embark on a similar operation be sure to select a building that is isolated from any dwelling which is not in the city center knowing that, it is not because we do photogrammetry that we must not respect the drones regulation So here, the chance we have is that this church, it is in the middle of nothing so there, we can quietly evolve a drone around we still watch out for anyone who comes to walk in the area and of course, we do not do that during a Mass, of course About the photos to be done on such a building
which is rather complicated because there are several volumes we will first make a circular photo set, around the bell tower on several levels then we will do a mapping plan above the roof and finally, we will take pictures on the periphery of the building, on two levels The ideal when we do this type of capture is to have a cloudy day so we have a homogeneous light everywhere on all facades and it avoids having too much contrasts with overexposed facades and facades that would be in the dark so that it facilitates the photogrammetric treatment then we made all the pictures, now we’re going home we download all this on the computer and
we will process them in Agisoft Photoscan We will make the alignment of the photos as a first step then we will create the dense points cloud, then the mesh and finally, we can export the 3D model as OBJ format in Ideamaker
which is CAM software for 3D printers let’s go, we go to Photoscan now that we have created our 3D model, we will export this model in OBJ format it is a format that will be processed by CAM software for additive manufacturing So what will be practical with this type of building we will certainly not need support for 3D printing since there is no large overhang so now we go to IdeaMaker and we will prepare the construction of this building Now we’re ready to start printing we download all this into the printer and we end up in a few hours with the result So we finished building this church so it’s interesting because we could manufacture at different scales quite easily
within the limits of our 3D printer so the conclusion is that 3D printing is a good complement to photogrammetry since we will be able to concretely realize the 3D models that we created thanks to the process of photogrammetry I hope you enjoyed this video, that it was useful to you and that it will give you ideas to make yourself models of your photogrammetric recordings and I’ll see you soon on the Paladrone channel, thank you!