Agisoft Metashape
Agisoft Metashape => Camera Calibration => Topic started by: JohnyJoe on June 25, 2020, 06:10:45 PM
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Hello
I have camera Nikon D3200 with default kit lens (18-55mm), i useto scan smaller objects (like around 20x20 cm for example) (nothing TINY (insect) nothing HUGE).
I shoot around 50-150 photos per scan lets say. I use studio lights (cheap) and a cheap tripod.
I have NEVER done any camera calibration... I dont know anything about it
My question is simple - how much does camera calibration help in regards to increasing the final quality of the scan? (the dense point cloud, the resulting mesh, the texture)...?
THank you
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Nobody knows; can answer that please :)?
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Hello JohnyJoe,
Usually you can rely on the autocalibration procedure, if the provided overlap is good and the texture pattern of the scanned object/scene contains many unique features.
Pre-calibration may be reasonable, if you are planning to work on the low-textured models, where the autocalibration would not work.
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Ah interesting... so if im a scanning a "normal object" = rich texture and a lot of photos, theres really no reason the use the camera calibration?
BUT... if i have a model that failed to allign the photos (for reason that i have few photos or that the texture of the object is rather "plain" (missing details) than i could think about the camera calibration and it might help to allign the photos (that didnt allign originally).
Do i understand this correctly?
Thank you
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Hello JohnyJoe,
Yes, that's the common idea of using (or not using) pre-calibrated data for consumer grade cameras.