Fei Xie, Yuchen Ma, Zeting Pan, Xinmin Guo, Jun Liu, G. Gao
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Degree Evaluation of Facial Nerve Paralysis by Combining LBP and Gabor Features
Context: Facial paralysis affects both mental and physical health of patients severely. The most of existing researches are based on subjective judgments in evaluating the degree of facial paralysis, regardless that the definition of facial paralysis is ambiguous. This will result in low evaluation accuracy and even misdiagnosis. Objective: We propose a method of assessing the degree of facial paralysis considering static facial asymmetry and dynamic transformation factors. Method: This method compares the differences of the corresponding local areas on both sides of the face, thereby analyzes the asymmetry of the abnormal face effectively. Quantitative assessment of facial asymmetry concerns the following three steps: local facial area location, extraction of asymmetric features, and quantification of asymmetrical bilateral surfaces. We use a combination of static and dynamic quantification to generate facial palsy grading models to assess the extent of facial palsy. Results: We then report an empirical study on 320 pictures of 40 patients. Even the accuracy of the experimental tests do not achieve the ideal effect, it reaches more than 80%.Conclusion: Using our facial paralysis database of 40 patients, the experiment shows that our method gains encouraging effectiveness.