Blobbing problems
Hello all,
Happy October :),
We are scanning a museum ship model, and after many attempts and about a 1000 photos, we can't get the features right on the statue in the front. It keeps making blobs instead of features. We have a 100 megapixel camera and the lighting is as even as possible. What would you advise? Is there something obvious we are forgetting? All the best! PG
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Hi Priamixx,
this problem is cause it seems, that that particular part of a ship is too shiny and without features. What you can do is use a diffuse light during capturing and also some kind of texture projector in this part of a ship.
Is this just a model or real size ship? Also, you can try to capture this part more detailed (https://www.youtube.com/watch?v=9e_NLp_FaUk&t=2s)
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The more reflective surface of the details on the bow are definitely a cause for some minor "blobbing".
Another solution you may want to try is a cross-polarized approach to photographing the front section of the ship. If you shoot let's say another 50 photos cross-polarized and you manage to align it to the rest of your ship you can use those images for geometry only and have the textures be generated from the previous images. That way you keep color information consistent but are left with a cleaner surface.
If you don't have the option to reshoot, try to lower the max features per image / megapixel setting and set the detector sensitivity to medium or low. Doing so might make RC skip dubious and inaccurate points, keeping only the more relevant and stable ones possibly giving you a tighter alignment. If it doesn't work on the whole ship use a selection of the images that focus on the bow and align those later as a component to the rest.
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