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(a) Stage 0 vs. Stage 1 vs. Stage 2 vs. Stage 3 vs. Stage 4; (b) Stage 0 vs. Stages 1,2,3,4 (c) Stages 0,1 vs. Stages 2,3,4 (d) Stages 0,1,2 vs. Stages 3,4 (e) Stages 0,1,2,3 vs. Stage 4. Bin size values, given in pixels, refer to the size of the regions that contribute to the bin histograms, which constitute the DSIFT descriptor.
