Alignment problem

[tpnce]

Hi everyone,

I am a beginner on Meshroom and I am french, so please apologize if I make some mistakes
I encounter problems when I try to align my photos with photogrammetry pipeline. I think my images are pretty good, but it doesn't align properly.

I used a turntable over a white background and I shot every 10° with a Nikon D850 and standard zoom at 85mm, 64 ISO. My lighting was flash. File format is TIFF 16 bits. I shot from different angles (see below).

I also made macrophotographies with another lens in order to improve the precision of the model (see below).

I tried different combinations between the different groups of photos (only the images with 85mm, then all the images macro + 85mm, etc.) but it doesn't align. For example, this is the kind of alignment it makes :

I think the object is a bit tricky because of its repetitive pattern, but it aligns well with another set of photographs with a D850, same lens, 800 ISO, file format JPEG and continuous light (see below)

Any advice ?

Thank

[Flashback1010]

Hi,

There are few steps you should be aware of.

You’re pictures looks nice for human eyes but may not be for Photogrammetry.
If you want to take a set of photos with a turntable using a flash, you may want try to build/make a “void” first (pure black background without graduation on the turntable).

You also have an option that can help in FeatureMatching → Minimal motion 2D
Default at -1, you can change it.

Meshroom turntable

Some of your pictures seems a bit blurry at the back of the object, you’re F-stop value may be a bit low.
Try to get an ‘even’ shape photo from the front to the back of your object by increasing the F-stop value.