“…There are lots of low-level features, e.g. HSV (Hue, Saturation, Value) (Wang, Li, Wang, Liu, & Li, 2013), GIST (Oliva & Torralba, 2001;Oliva & Torralba, 2006), SIFT (Scale-Invariant Feature Transform) (Lowe, 2004), HOG (Histogram of Oriented Gradient) (Navneet & Bill, 2005), SPM (Spatial Pyramid Matching) (Lazebnik, Schmid, & Ponce, 2006), BOW (Bag of Words) (Banerji, Sinha, & Liu, 2013) etc. HSV describes colours from the perspective of hue, saturation, and value in human visual system.…”