Dark surfaces have always been any 3D scanner's pet peeve, except perhaps for $20K (and above) laser 3D scanners. It is hard for a 3D scanner or photogrammetry algorithm to determine features on a dark surface; everything is basically a shadow for the algorithm.
If you need to 3D scan a dark-colored object, you can try using adhesive markers – they look a little bit like targets – or applying white chalk to the surface. You can get creative here; some users have even used sticky notes!
How to Capture with Photo Scan
When Capturing with Photo Scan, Does the Entire Object Need to be Framed in Each Photo?
How Long Does it Typically Take for KIRI Engine Servers to Process My Scan?
What is Auto Object Masking?
How Can I Scan the Bottom of Objects?
Is it Possible to Delete Certain Photos (e.g. A Blurry Picture) From a Project Before Uploading?
Can I Run the Algorithm Locally on My PC to Avoid Queue Times?
Can I Use a Drone to 3D Scan with KIRI Engine?
How to Capture with Featureless Object Scan
How to Capture with 3DGS
How to Use LiDAR Object Capture
How to Use LiDAR Room Scan
How to Use LiDAR Scene Scan