# QVIO Detecting Features on the Landing Gear

Source: https://forum.modalai.com/topic/3007/qvio-detecting-features-on-the-landing-gear
Category: General Questions (https://forum.modalai.com/category/2/general-questions)
Posted: 2024-01-11 16:51:03 UTC by SMRazaRizvi
Replies: 1 · Views: 988

## SMRazaRizvi · 2024-01-11 16:51:03 UTC

Hello,

I am using the Sentinel drone with the default tracking sensor used by the QVIO for indoor positioning.

I've recently changed the landing gear that comes with the standard S500 drone chassis, and unfortunately, the QVIO seems to be detecting features on the landing gear as they are visible in the Tracing sensor now.

How should I go about solving this issue?

## Reply by Alex Kushleyev (ModalAI staff) · 2024-01-12 03:27:32 UTC

@SMRazaRizvi ,

Please see the following post that answers your question : https://forum.modalai.com/topic/2551/add-mask-file-to-qvio-algorithm .

Specifically, you would need to add the name of the static mask file here (ideally full path of the file) : https://gitlab.com/voxl-public/voxl-sdk/services/voxl-qvio-server/-/blob/master/server/main.cpp?ref_type=heads#L384 (`staticMaskFileName` which is initialized to `Null`).

See the other thread for explanation what the mask format should be.