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Table 1 Summarization of our proposed novel image features

From: Categorizing biomedicine images using novel image features and sparse coding representation

features title features dimension
1. text region entropy distribution: H h entropy ( I ) , H v entropy ( I ) 20
2. structural patterns: Vfreq,h,j(j = 1, · · ·, 5), Vfreq,v,j(j = 1, · · ·, 5), H h , i structure ( I ) , H v , i structure ( I ) , 60
3. distance distribution closest neighbours: Vdis,j(j = 0, · · ·, 4) 20