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. 2022 Apr 6;8:e920. doi: 10.7717/peerj-cs.920

Table 6. Video features were used in the selected studies.

Mabrouk & Zagrouba (2018) Motion, space and time
Lejmi, Khalifa & Mahjoub (2019) Motion blobs, Edges and corner of image
Serrano et al. (2015) Motion blobs
Zhou et al. (2017) Optical flow, motion and moving bob
Ribeiro, Audigier & Pham (2016) Motion, direction and speed
Yao et al. (2021) MoDI and WMoDI, motion regions marking
Arceda et al. (2016) Optical flow, Magnitude
Wu et al. (2020a), Wu et al. (2020b) Optical flow and audio features
Xie et al. (2016) Motion vector and direction
Febin, Jayasree & Joy (2020) Optical flow, MBH, movement filtering?
Senst et al. (2017) Spatial, temporal and motion
Ye et al. (2018) Rectangular frame and optical-flow
Zhang et al. (2016) Spatiotemporal and motion
Deepak, Vignesh & Chandrakala (2020) Spatio-Temporal Auto-Correlation of Gradients
Al-Nawashi, Al-Hazaimeh & Saraee (2017) Motion region and optical flow
Kamoona et al. (2019) Multiple handcrafted features
Sultani, Chen & Shah (2018) Spatial–temporal, C3D
Song, Kim & Park (2018) Movement, direction and speed
Vashistha, Bhatnagar & Khan (2018) Speed, direction, centroid and dimensions
Arandjelovic et al. (2016) Spatiotemporal features
Torii et al. (2015) Spatio-temporal
Mohtavipour, Saeidi & Arabsorkhi (2021) Spatial, temporal, and spatiotemporal streams
Rendón-Segador et al. (2021) Spatio-temporal features
Serrano et al. (2018) Apperancde, motion, optical flow
Xia et al. (2018) Direction and motion information
Accattoli et al. (2020) hand-crafted and trajectory-deep features
Ullah et al. (2019) Spatiotemporal features
Fu et al. (2015) Motion, acceleration and magnitude
Deniz et al. (2014) Spatiotemporal, acceleration and motion
Ye et al. (2018) Time-domain and frequency-domain
Mabrouk & Zagrouba (2017) STIP, optical flow