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General / Defocus masks
« on: May 26, 2021, 08:21:59 PM »
Hello!
I've noticed in different projects, that the generation of defocus masks (from V 1.7) gives very unpredictable results. Since I do close-range photogrammetry I would like to use this option to limit the reconstruction and the texture calculation to in-focus areas of the photographs. So I build an initial scaled mesh with only the necessary masks to allow for correct image alignment. I then calculate the defocus masks from the scaled mesh and do the whole photogrammetry process again with the defocus masked images. With this approach in many images perfectly in-focus areas of the object are masked out while completely blurry parts of the photograph are kept.
Does anybody have similar experiences?
@Alexey: What could be the reason for this?
best regards,
Andreas
I've noticed in different projects, that the generation of defocus masks (from V 1.7) gives very unpredictable results. Since I do close-range photogrammetry I would like to use this option to limit the reconstruction and the texture calculation to in-focus areas of the photographs. So I build an initial scaled mesh with only the necessary masks to allow for correct image alignment. I then calculate the defocus masks from the scaled mesh and do the whole photogrammetry process again with the defocus masked images. With this approach in many images perfectly in-focus areas of the object are masked out while completely blurry parts of the photograph are kept.
Does anybody have similar experiences?
@Alexey: What could be the reason for this?
best regards,
Andreas