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Table 12 Comparison of the complexity of different methods

From: A multisource fusion framework driven by user-defined knowledge for egocentric activity recognition

  Proposed method Method in [15] Method in [16]
Vision One pre-trained CNN (single image) + entropy-based TF-IDF Three-stream CNN (single frame, optical flow, and stabilized optical flow) Optical flow-based dense trajectory
Low High Very high
Sensors SVM Four-stream LSTM Temporal enhanced trajectory-like features
Low Medium Low
Fusion DSmT Average or maximum pooling Multimodal Fisher vector
Medium Low Medium