Musculus facialis three-dimensional motion measuring device on basis of motion capture

Abstract

The invention relates to a musculus facialis three-dimensional motion measuring device on the basis of motion capture. The musculus facialis three-dimensional motion measuring device comprises a fixed head support and a motion capture device, and the fixed head support is fixed on a skull through a plurality of bone fulcrums of the skull of a measured user. The motion capture device comprises motion capture cameras arranged in front of the face of the measured user and used for capturing relative relation of various facial motion observation points on the face and the fixed head support, and the motion capture device calculates musculus facialis static parameters and dynamic parameters of facial motion observation points according to the relative relation. The fixed head support can be used as an 'absolute' reference system for reflecting the static conditions of the musculus facialis and the dynamic conditions of the facial observation points, is fixed through the bone fulcrums of the skull and can be stably fixed on the skull to move along with the skull without affection of facial expression. Further, the static parameters of the musculus facialis and the dynamic parameters of the facial motion observation points can be quickly, conveniently and accurately measured, and objective evaluation of the motion function of the musculus facialis is realized.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a three-dimensional motion measurement device for facial muscles based on motion capture. Background technique [0002] Facial paralysis not only seriously affects people's appearance, but also causes changes in their social behavior, work and life. But the lack of an accurate and objective facial nerve function evaluation system restricts the diagnosis, treatment and research of facial paralysis. There are also large differences in the actual clinical work and clinical research of facial paralysis. Clinical work is generally qualitative and flexible, while clinical research should be quantitative and "determined". [0003] According to this difference, the facial nerve function evaluation system can be divided into subjective evaluation system and objective evaluation system. The subjective evaluation system is simple, fast and convenient for clinical use, but it relies on th...

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Problems solved by technology

However, the amount of mirror distortion in this system cannot be estimated, and the error caused by applying facial markers as reference points has not been fully considered

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