CASMEMG includes synchronized micro-expression videos and facial electromyography (EMG) signals. Micro-expressions were induced by emotion-evoking videos while participants were asked to maintain a neutral facial expression. Videos were captured in 4K (3840×2160) at 30 fps. EMG was collected from 7 superficial facial muscles to ensure signal accuracy. The database contains 147 macro-expression and 233 micro-expression samples, with keyframe timings, AUs, and emotion labels.
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