Development and Application of a Dynamic Three-dimensional Quantitative Facial Measurement Device

Chinese Academy of Medical Sciences & Peking Union Medical College

Status: Enrolling

Conditions: Facial Palsy

Treatments: Other: non-intervention

Study type: Observational

Funder types: Other

Identifiers

NCT05981651

PekingUMCH record I-22PJ1121

Details and patient eligibility

About

The aim of this project is to successfully develop and industrialise the "Facial Movement 3D Dynamic Quantitative Measurement Device", which is a commercial device that can provide dynamic indicators of facial movement, and can practically solve the evaluation problems of facial paralysis for doctors and patients, and has important clinical value and social benefits.

Full description

Based on the current optimal high-precision face key point technology, the effective high-precision automatic face recognition model conforming to the Asian face is established through specialised training with targeted marker data, time series training optimisation based on optical flow, and local image tracking technology. The 3D reconstruction technique is then used to reconstruct the 3D spatial coordinates of the face keypoints, so as to realise the multi-camera 3D tracking of the face keypoints. The displacement of the key points is used to respond to the facial muscle activity characteristics of facial paralysis patients.

Enrollment: 200 estimated patients

Sex: All

Ages: 14 to 70 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

1. Older than 14 years
2. No history of facial surgery, facial trauma, or scars obscuring the facial features.
3. Able to perform relevant actions according to instructions
4. Willingness to participate in the study

Exclusion criteria

1. Unwillingness to participate in the study
2. Unable to co-operate with relevant command actions
3. Obvious trauma, scars, etc. obscuring the facial features
4. Less than 14 years of age

Trial design

200 participants in 2 patient groups

training session

Description:

A total of 150 facial expression videos of healthy volunteers and facial palsy patients were collected as a training set for the algorithm

Treatment:

Other: non-intervention

test set

Description:

A total of 50 cases of healthy volunteers and patients with facial palsy were used as the test set for the algorithm

Treatment:

Other: non-intervention