Soft classification performance of exemplary categories on JPEG compressed images (QF = 85): For subfigures (a)–(c), the filter size is 2 × 2 × 3 (i.e., the number of channels is 12), while for subfigures (d)–(f), the filter size is 3 × 3 × 3 (i.e., the number of channels is 27). For each subfigure, we show five performance curves: train set AUC (red dashed line), train set ACC (red line), validation set AUC (green dashed line), test set AUC (blue dashed line), and test set ACC (blue line).