How to scan a circle with a diameter of 30 on the computer?

3d scanner, photographic scanning, hand-drawn scanning.

1. With a professional 3d scanner, you can scan a circular object in all directions, generate a 3D model, and save it on the computer.

2. Use a camera or smart phone to take multi-angle photos of circular objects, and use special software to synthesize these photos into a three-dimensional model.

3. Hand-painted circular patterns can be scanned or photographed with a scanner or camera and saved on a computer. This method is suitable for scanning plane patterns.