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arXiv · 2510.15471

A Novel Combined Optical Flow Approach for Comprehensive Micro-Expression Recognition

Vu Tram Anh Khuong·Thi Bich Phuong Man·Luu Tu Nguyen·Thanh Ha Le·Thi Duyen Ngo
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Abstract

Facial micro-expressions are brief, involuntary facial movements that reveal hidden emotions. Most Micro-Expression Recognition (MER) methods that rely on optical flow typically focus on the onset-to-apex phase, neglecting the apex-to-offset phase, which holds key temporal dynamics. This study introduces a Combined Optical Flow (COF), integrating both phases to enhance feature representation. COF provides a more comprehensive motion analysis, improving MER performance. Experimental results on CASMEII and SAMM datasets show that COF outperforms single optical flow-based methods, demonstrating its effectiveness in capturing micro-expression dynamics.

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Vu Tram Anh Khuong, Thi Bich Phuong Man, Luu Tu Nguyen, Thanh Ha Le, Thi Duyen Ngo. 2025-10-17. A Novel Combined Optical Flow Approach for Comprehensive Micro-Expression Recognition. https://doi.org/10.1007/978-981-95-1746-6_42

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