How to Reduce Ripples under a Client's Arms? Change your lighting.
Can Shadows Affect 3D Scanning and How to Fix It?
Shadows can sometimes cause problems when capturing a 3D scan. If shadows appear in the scan, you might see small "ripples" in a 3d avatar – sometimes seen under a person’s arms. This happens because 3D cameras rely on light to measure depth, and shadows block or distort that light. This may also be amplified by people wearing dark shirts.
Technically – Could Shadows Cause Issues & Why Does this Happen?
3D cameras use different methods to measure depth, but they all need clear visibility. Shadows can cause:
- Distorted Shapes – Harsh shadows create uneven lighting, leading to ripples or bumps in scans. ( SNAP Scanner ).
This may be caused by a strong spotlight in a room. - Weak Infrared Reflection – Some cameras use infrared light to measure depth. Shadows and dark surfaces absorb more infrared light than lighter surfaces, reducing the amount of reflected light that reaches the camera. This can cause inaccuracies in the scan in certain areas. ( ProScanner )
- Not Enough Lighting - For scanning in general, not enough lighting may impact the ability of a scanner to capture a scan. For systems like SNAP, having a well-light room is important to get a good scan.
How to Reduce Shadow Effects
You can improve scan quality by adjusting the lighting in the room:
- Use Soft, Even Lighting – Avoid strong overhead lights that create harsh shadows under the arms or between the legs.
- Add Extra Light Sources – Placing lights on different sides of the room helps fill in shadows.
- Minimize Direct Sunlight – Bright sunlight from windows can create strong shadows that interfere with scanning.
- Consider Surface Colors – Lighter-colored clothing and backgrounds reflect more infrared light, helping the camera capture depth more accurately.
If you notice ripples or gaps in your scans, try adjusting the lighting to create more even conditions. Better lighting can help reduce shadow-related issues and improve overall scan accuracy.
As with any "test" make sure to take several test scans (3-4) and document the results.