Review Article

A Review on Human Activity Recognition Using Vision-Based Method

Table 2

Feature encoding methods.

MethodProposedDescription paper, the number of citations

Vector quantization (VQ)/hard assignment (HA)Sivic et al. (2003)[59], 5487
Kernal codebook coding (KCB)/soft assignment (SA)Gemert et al. (2008)[60], 586;
[61], 761
Spase coding (SPC)Yang et al. (2009)[62], 2529
Local coordinate coding (LCC)Yu et al. (2009)[63], 614
Locality-constrained linear coding (LLC)Wang et al. (2010)[64], 2410
Improved Fisher kernel (iFK)/Fisher vector (FV)Perronnin et al. (2010)[65], 1590
Triangle assignment coding (TAC)Coates et al. (2010)[66], 976
Vector of locally aggregated descriptors (VLAD)Jegou et al. (2010)[67], 1135;
[68], 710;
Super vector coding (SVC)Zhou et al. (2010)[69], 459
Local tangent-based coding (LTC)Yu et al. (2010)[70], 122
Localized soft assignment coding (LSC/SA-k)Liu et al. (2011)[71], 398
Salient coding (SC)Huang et al. (2011)[72], 131
Group salient coding (GSC)Wu et al. (2012)[73], 33
Stacked Fisher vectors (SFV)Peng et al. (2014)[32], 149