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Objects with repetitive geometry and no texture

10 March 2015

Artec customers occasionally need to scan parts that have repetitive geometry and no texture, such as gears and turbines.
Here are two simple tips that will help make this process a lot easier:

Use the right background


Put the object on a surface with rich texture, such as a sheet of paper with printed or handwritten text on it. As long as you keep the background within the field of view of the scanner, there’ll be no problem with texture tracking or global registration.

 

The text in the background will also improve the accuracy of the scan – just remember to capture the text on as many frames as possible.

 

Also, make sure the background isn’t too bright and the text is clearly visible. If it’s not quite right, just shift the brightness slider a tad.

 

Add texture

 

If the object is too large to fit a textured background in the field of view, add texture. The scanner will distinguish between colors to identify the edges of the object scanned.

 

For easier recognition, we recommend marking the object with a few numbers, letters or crosses. The main advantage of this method is that it’s applicable to objects of any size, even several meters long. Just make sure there is unique texture in each frame.

 

If you can’t draw anything on the object, use masking tape. It’s easy to mark, can be attached to any surface and doesn't leave any sticky residue when removed.

 

We are here to help! If you have any questions or issues, please do not hesitate to contact our team by emailing support@artec-group.com or by clicking on "Ask Support" button on the upper part of the screen. We will always be happy to assist you and will get back to you as soon as we can.