“…Over the years, different approaches have been proposed to combine global and local descriptors (color and texture [ 13 , 33 , 44 , 45 , 107 ], color and shape [ 2 , 25 , 75 , 113 , 116 ], shape and texture [ 92 , 103 ], and color, shape, and texture [ 7 , 8 , 14 , 73 , 81 , 83 , 86 , 121 ]). To a lesser extent, authors have also proposed combinations of low- and high-level descriptors [ 57 , 58 ], and an ensemble of high-level descriptors [ 36 ].…”